UNIX Basics. UNIX Basics CIS 218 Oakton Community College
|
|
- Kristian Curtis
- 6 years ago
- Views:
Transcription
1 UNIX Basics UNIX Basics CIS 218 Oakton Community College
2 History UNIX was invented in 1969 at AT&T Bell Labs Ken Thompson and Dennis Ritchie are credited as the original architects and developers of C. Written in the C programming language in 1973 Resold under UNIX System License (USL) Current USL version SystemV R4 Different commercial flavors: Solaris (Sun), AIX (IBM), Irix (SGI), HPUX (Hewlett Packard), SCO Academic version BSD (Mac OS X base) UNIX Variants LINUX, UNIX ports Android, MAC OSX
3 UNIX Unix Design Design Modularity Each part of the Unix system is a system unto itself printing, networking, mail, file management, accounting, etc. Many Unix systems can be run in different modes. This allow for a certain set of modules to be run based on usage (workstation, server). UNIX utilities are independently developed packages
4 UNIX Layers
5 UNIX Versus DOS/Windows UNIX everything is a file UNIX is case sensitive, DOS is not UNIX searches $PATH for executables, DOS starts in current directory, then PATH. UNIX is multi-user, DOS is not. Windows is (kind of) UNIX GUI sits on top of the OS - same as Windows thru ME). This changed After NT. UNIX directory has one starting point root /. Windows has multiple A:, C:, D: etc.
6 UNIX Versus DOS/Windows DOS UNIX Command Description CD pwd Display current directory CD \ cd / Moves to the root directory CD.. cd.. Moves up one level in the directory structure CD path cd path Sets the current directory to a new directory CHKDSK du Displays disk usage CLS clear Clear the screen COMMAND sh, csh.. Start a new shell (command processor) COMP cmp Compares two files and shows the difference COPY cp Copy a file DATE date Displays the date DEL or ERASE rm Deletes a file DELTREE rm -r Deletes a directory tree ( CAREFUL!!! ) DIR ls -l Lists the directory in a long format DIR /W ls Lists the directory in a short format ECHO echo Displays a message or a variable EXIT exit End a shell FC diff Displays differences between two files FIND grep Displays lines matching a given pattern HELP man Display information about a command MD or MKDIR mkdir Creates a directory MORE more Displays text a page at a time MOVE mv Moves a file PRINT lpr Prints a file RD or RMDIR rmdir Removes a directory REN mv Renames a file SET set Sets a variable to a given value SORT sort Sorts a data TIME date Displays the time TYPE cat Displays a file
7 Shells Shell sh original interface to UNIX Bourne Shell added some desirable features but has different syntax for some things Newer Bourne Shell variants are Korn Shell (ksh) and Born Again Shell (bash) C Shell C program language syntax, tcsh, Perl Program Extract and Reporting Language Some systems allow user to chose which shell you prefer with chsh. The full path to the shell must be given
8 The Shell When you log in to interact with UNIX, you see a shell prompt ($ or %) A word is a text string separated by white space space, Tab or IFS The shell is a program that runs constantly and executes the commands you give it A command is the first word on a line. All following words are command line parameters Commands terminators: <LF> Enter or Return, ;,, >
9 UNIX command line You interact with the Unix by entering commands thru thee shell. The line is parsed as text sepaated by whitspace caracters into words or tokens. The first word is always a command. The basic form of any Unix command is: Command Option(s) Argument(s) Most commands provide integral help or on-line Manual (man page) Options or flags modify the way that a command works. They usually consist of a hyphen followed by a single letter.
10 Unix file types (ls l) d: Directory - holds other files or directories. -: Normal Files Text files - text that is human readable. Binary files - executable files l: Link - allows space efficient copying of files/directories. Symbolic or soft - may span file systems. Hard - is indistinguishable from the original file/directory..: Hidden File - any file that begins with a. (dot). c,b: Character or Block Special Files hardware interface. virtual files pipes, semaphores, sockets.
11 Files and Directories UNIX uses a single hierarchy to store files beginning with root / Files are a named collection of bytes juliana Project File1 File2 File3 Directories contain other files (or not)
12 Basic Directory Terms Home directory (~ ) - top of your file tree: Root directory (/ ) - top of a file tree: Current directory (.) - directory you re in now (pwd) Dot (.) - current directory Dot-dot (..) - parent of current directory Path - Where to find file or directory Absolute path: /fs/scd/home0/juliana/myfile Relative path:./myfile Standard files STDIN, STDOUT, STDERR
13 Managing Files and Directories cd - change directories (built into shell) pwd present working directory mkdir - creates a directory rmdir - removes a directory (must be empty first) rm myfile1 - remove a file rm -fr - removes directory and everything below touch <filename> - creates an empty file cat <filename> - displays a file on screen more <filename> - to see a screenful at a time mv myfile1 myfile2 - renames (moveas) a file
14 Tar and Compress - Tar stands for tape archive but is more often used to gather files into one bundle. Equivalent of a ZIP file, without the compression. - cd to the directory above the one you want to archive tar cvf - diry_name > diry.tar - To list the archive, use tar -xvf diry.tar - To untar the archive, use tar -xvf diry.tar - Compressed files take up less space. To compress a tar file, use compress diry.tar or gzip diry.tar - To uncompress, use uncompress diry.tar.z or gunzip diry.tar.gz - Note equivalent gzip commands: zcat, zgrep, zmore, zdiff
15 File Permissions You own your files and directories user-group-other read/write/execute permissions -rw-r--r-- 1 jsmith staff Feb 17:58 6.bmp -rw-r--r-- 1 jsmith staff Feb 17:57 5.bmp + to add, - to remove alphabetic permissions r=4, w=2, x=1 so rwx: 4+2+1=7 for numeric chmod command changes permissions chmod bmp chmod g-rw 6.bmp -rw----r-- 1 jsmith staff Feb 17:58 6.bmp
16 File Permissions Access rights on files. r : indicates read permission (or otherwise), that is, the presence or absence of permission to read and copy the file w : indicates write permission (or otherwise), that is, the permission (or otherwise) to change a file x : indicates execution permission (or otherwise), that is, the permission to execute a file, where appropriate Access rights on directories. r : allows users to list files in the directory; w : allows users to delete files from the directory or move files into it; x : allows users the right to access files in the directory (e.g. cd into directory), read files in the directory provided you have read permission on the individual files.
17 File Permissions Symbol Meaning u user g group o other a all r read w write (and delete) x execute (and access directory) + add permission - take away permission
18 User Commands for Files What s in my directory? ls db5-24 nwade.txt schumacher5-19.txt kirsh5-12.txt nwade5-13a.txt sheu5-20.txt ls -alt -rw-r--r-- 1 jsmith staff May 09:12 db5-24 -rw-r--r-- 1 jsmith staff May 12:12 kirsh5-12.txt -rw-r--r-- 1 jsmith staff May 08:16 ming.txt -rw-r--r-- 1 jsmith staff May 16:53 mingrep Wildcard - * stands for any (# of) character(s) Wildcard -? stands for any single character [abcde ] selection set, any single character within the brackets
19 User Commands for Files wc - word, line, character, and byte count echo - echo characters back (print) sort - sort lines of a text file uniq remove consecutive duplicats lines cut/paste/join manipulate data by physical location in a record or file sed stream editor, vi commands in a batch file awk string manipulation tr translate from one character to another strings review a binary file for text od examine a file for binary contents head, tail display begin and end of a file cat copy to stdout cp copy a file
20 Finding and Searching diff find differences between two text files find - a tricky but useful command find. -name myfile -print find. -name *name* print exec cmd {} \; grep - stands for general regular expression print Search all files for a pattern: grep -i lightning system * grep -v lightning system * grep -c gee whiz *
21 Wildcard characters Wildcard characters can be used to represent many other characters in listing filenames. Use them whenever you need to define a string of characters, such as a filename, for use with a command. Useful wildcards are: * matches any characters, zero or more.? match any single character. [...] matches any character in the enclosed list or range. Examples: ls *.txt # Lists all the files in the current directory # that have the extension.txt. cat memo? # Concatenate files that start with memo # and are followed by any one character. rm part[1-3] # Remove files: part1, part2 and part3
22 Input/Output (I/O) and Redirection By default, a terminal keyboard is the standard input file (STDIN) from which to read in information Terminal is also the standard output file (STDOUT) to which information is sent from the command. Input can be given from the command line, or from a file: a.out < inputfile Output goes to your screen, or you can redirect it to a file: echo hi there > out.file To append, use >> echo hi back at you >> out.file here document for inline stdin << EOF Use the tee filename command to redirect out put to both STDOUT and a file.
23 Input/Output (I/O) and Redirection <& m Duplicates standard input from file descriptor m [n] >& m Duplicates standard output or file descriptor n if specified from file descriptor m i.e. 2>&1 [n] <&- Closes standard input or file descriptor n if specified [n] >&- Closes standard output or file descriptor n if specified. or pipe (prior slide) is also redirection. It redirects STDOUT from the preceding command to STDIN of the following command. The general term for the following command is called a filter as it modifies or filters the output of the preceding command..
24 Pipes You can string commands together into a single command using pipes ( ) ps grep juliana - what am I running now Save the results in a file: who wc > usercount Used with file manipulation commands as filters who wc - count how many users on the system
25 System Info Commands System Uptime uptime What time is it? date Where is a command? which ls whereis ls How do I use a command? man ls
26 System Info Commands Where am I? pwd - print working directory cwd - current working directory Who am I? whoami Who is on the system? What s running? who, w ps ef, -aux
27 More Useful Commands, cont. passwd - change password chsh change default shell lpr - print a file (printer at OCC) history - (C shell builtin) - list of previous commands alias - create a pseudonym or shorthand for a command (behaves differently for C versus Bourne shell)
28 Editing - vi Front end to ed Universal among UNIX and it s variants vi somefilename (copies file into memory buffer) Three modes command mode, text mode(esc), operator line(:) determines how keystrokes are interpreted by vi
29 Editing vi (commands) i insert text x delete a character r replace a character R replace text yy p copy a line dd delete a line /text locate text / - repeat last find <Enter> or <Return> - ends a line :wq save results and quit (:wq! force overwrite of file) :q - quit (no save) Navigation: arrow keys or HJKL
Introduction: What is Unix?
Introduction Introduction: What is Unix? An operating system Developed at AT&T Bell Labs in the 1960 s Command Line Interpreter GUIs (Window systems) are now available Introduction: Unix vs. Linux Unix
More informationTable of contents. Our goal. Notes. Notes. Notes. Summer June 29, Our goal is to see how we can use Unix as a tool for developing programs
Summer 2010 Department of Computer Science and Engineering York University Toronto June 29, 2010 1 / 36 Table of contents 1 2 3 4 2 / 36 Our goal Our goal is to see how we can use Unix as a tool for developing
More informationacmteam/unix.pdf How to manage your account (user ID, password, shell); How to compile C, C++, and Java programs;
Note: you can find this file under: http://www.cs.queensu.ca/ acmteam/unix.pdf Introduction to Unix Tutorial In this tutorial, you will learn: How to manage your account (user ID, password, shell); Navigating
More informationUNIX. The Very 10 Short Howto for beginners. Soon-Hyung Yook. March 27, Soon-Hyung Yook UNIX March 27, / 29
UNIX The Very 10 Short Howto for beginners Soon-Hyung Yook March 27, 2015 Soon-Hyung Yook UNIX March 27, 2015 1 / 29 Table of Contents 1 History of Unix 2 What is UNIX? 3 What is Linux? 4 How does Unix
More informationShell Programming Systems Skills in C and Unix
Shell Programming 15-123 Systems Skills in C and Unix The Shell A command line interpreter that provides the interface to Unix OS. What Shell are we on? echo $SHELL Most unix systems have Bourne shell
More informationOperating Systems. Copyleft 2005, Binnur Kurt
3 Operating Systems Copyleft 2005, Binnur Kurt Content The concept of an operating system. The internal architecture of an operating system. The architecture of the Linux operating system in more detail.
More informationOperating Systems 3. Operating Systems. Content. What is an Operating System? What is an Operating System? Resource Abstraction and Sharing
Content 3 Operating Systems The concept of an operating system. The internal architecture of an operating system. The architecture of the Linux operating system in more detail. How to log into (and out
More informationChapter-3. Introduction to Unix: Fundamental Commands
Chapter-3 Introduction to Unix: Fundamental Commands What You Will Learn The fundamental commands of the Unix operating system. Everything told for Unix here is applicable to the Linux operating system
More informationIntroduction to UNIX command-line
Introduction to UNIX command-line Boyce Thompson Institute March 17, 2015 Lukas Mueller & Noe Fernandez Class Content Terminal file system navigation Wildcards, shortcuts and special characters File permissions
More informationLecture 3. Unix. Question? b. The world s best restaurant. c. Being in the top three happiest countries in the world.
Lecture 3 Unix Question? Denmark is famous for? a. LEGO. b. The world s best restaurant. c. Being in the top three happiest countries in the world. d. Having the highest taxes in Europe (57%). e. All of
More informationComputer Systems and Architecture
Computer Systems and Architecture Introduction to UNIX Stephen Pauwels University of Antwerp October 2, 2015 Outline What is Unix? Getting started Streams Exercises UNIX Operating system Servers, desktops,
More informationIntroduction to Unix: Fundamental Commands
Introduction to Unix: Fundamental Commands Ricky Patterson UVA Library Based on slides from Turgut Yilmaz Istanbul Teknik University 1 What We Will Learn The fundamental commands of the Unix operating
More informationCS246 Spring14 Programming Paradigm Notes on Linux
1 Unix History 1965: Researchers from Bell Labs and other organizations begin work on Multics, a state-of-the-art interactive, multi-user operating system. 1969: Bell Labs researchers, losing hope for
More informationCSE 303 Lecture 2. Introduction to bash shell. read Linux Pocket Guide pp , 58-59, 60, 65-70, 71-72, 77-80
CSE 303 Lecture 2 Introduction to bash shell read Linux Pocket Guide pp. 37-46, 58-59, 60, 65-70, 71-72, 77-80 slides created by Marty Stepp http://www.cs.washington.edu/303/ 1 Unix file system structure
More informationIntroduction to Linux
Introduction to Linux Prof. Jin-Soo Kim( jinsookim@skku.edu) TA Sanghoon Han(sanghoon.han@csl.skku.edu) Computer Systems Laboratory Sungkyunkwan University http://csl.skku.edu Announcement (1) Please come
More informationUnix Introduction to UNIX
Unix Introduction to UNIX Get Started Introduction The UNIX operating system Set of programs that act as a link between the computer and the user. Developed in 1969 by a group of AT&T employees Various
More informationComputer Systems and Architecture
Computer Systems and Architecture Stephen Pauwels Computer Systems Academic Year 2018-2019 Overview of the Semester UNIX Introductie Regular Expressions Scripting Data Representation Integers, Fixed point,
More informationPerl and R Scripting for Biologists
Perl and R Scripting for Biologists Lukas Mueller PLBR 4092 Course overview Linux basics (today) Linux advanced (Aure, next week) Why Linux? Free open source operating system based on UNIX specifications
More informationBIOINFORMATICS POST-DIPLOMA PROGRAM SUBJECT OUTLINE Subject Title: OPERATING SYSTEMS AND PROJECT MANAGEMENT Subject Code: BIF713 Subject Description:
BIOINFORMATICS POST-DIPLOMA PROGRAM SUBJECT OUTLINE Subject Title: OPERATING SYSTEMS AND PROJECT MANAGEMENT Subject Code: BIF713 Subject Description: This course provides Bioinformatics students with the
More informationIntroduction to UNIX command-line II
Introduction to UNIX command-line II Boyce Thompson Institute 2017 Prashant Hosmani Class Content Terminal file system navigation Wildcards, shortcuts and special characters File permissions Compression
More informationUNIX COMMANDS AND SHELLS. UNIX Programming 2015 Fall by Euiseong Seo
UNIX COMMANDS AND SHELLS UNIX Programming 2015 Fall by Euiseong Seo What is a Shell? A system program that allows a user to execute Shell functions (internal commands) Other programs (external commands)
More informationCommon UNIX Commands. Unix. User Interfaces. Unix Commands Winter COMP 1270 Computer Usage II 9-1. Using UNIX. Unix has a command line interface
Common UNIX Commands Using UNIX Unix Unix has a command line interface Unix commands must be typed Similar to the DOS operating system for PC s Compare to the Graphical User Interface (GUI) used by Windows,
More informationLinux for Beginners. Windows users should download putty or bitvise:
Linux for Beginners Windows users should download putty or bitvise: https://putty.org/ Brief History UNIX (1969) written in PDP-7 assembly, not portable, and designed for programmers as a reaction by Bell
More information5/20/2007. Touring Essential Programs
Touring Essential Programs Employing fundamental utilities. Managing input and output. Using special characters in the command-line. Managing user environment. Surveying elements of a functioning system.
More information5/8/2012. Exploring Utilities Chapter 5
Exploring Utilities Chapter 5 Examining the contents of files. Working with the cut and paste feature. Formatting output with the column utility. Searching for lines containing a target string with grep.
More informationIntroduction to Linux Part 1. Anita Orendt and Wim Cardoen Center for High Performance Computing 24 May 2017
Introduction to Linux Part 1 Anita Orendt and Wim Cardoen Center for High Performance Computing 24 May 2017 ssh Login or Interactive Node kingspeak.chpc.utah.edu Batch queue system kp001 kp002. kpxxx FastX
More informationUsing LINUX a BCMB/CHEM 8190 Tutorial Updated (1/17/12)
Using LINUX a BCMB/CHEM 8190 Tutorial Updated (1/17/12) Objective: Learn some basic aspects of the UNIX operating system and how to use it. What is UNIX? UNIX is the operating system used by most computers
More informationIntroduction to Linux
Introduction to Linux University of Bristol - Advance Computing Research Centre 1 / 47 Operating Systems Program running all the time Interfaces between other programs and hardware Provides abstractions
More informationIntroduction to Linux Organizing Files
Introduction to Linux Organizing Files Computational Science and Engineering North Carolina A&T State University Instructor: Dr. K. M. Flurchick Email: kmflurch@ncat.edu Arranging, Organizing, Packing
More informationFiles and Directories
CSCI 2132: Software Development Files and Directories Norbert Zeh Faculty of Computer Science Dalhousie University Winter 2019 Files and Directories Much of the operation of Unix and programs running on
More informationCSCI 2132 Software Development. Lecture 4: Files and Directories
CSCI 2132 Software Development Lecture 4: Files and Directories Instructor: Vlado Keselj Faculty of Computer Science Dalhousie University 12-Sep-2018 (4) CSCI 2132 1 Previous Lecture Some hardware concepts
More informationUseful Unix Commands Cheat Sheet
Useful Unix Commands Cheat Sheet The Chinese University of Hong Kong SIGSC Training (Fall 2016) FILE AND DIRECTORY pwd Return path to current directory. ls List directories and files here. ls dir List
More informationLinux Refresher (1) 310/ Fourth Workshop on Distributed Laboratory Instrumentation Systems (30 October - 24 November 2006)
310/1779-4 Fourth Workshop on Distributed Laboratory Instrumentation Systems (30 October - 24 November 2006) Linux Refresher (1) Razaq Babalola IJADUOLA These lecture notes are intended only for distribution
More informationFiles
http://www.cs.fsu.edu/~langley/cop3353-2013-1/reveal.js-2013-02-11/02.html?print-pdf 02/11/2013 10:55 AM Files A normal "flat" file is a collection of information. It's usually stored somewhere reasonably
More informationIntroduction p. 1 Who Should Read This Book? p. 1 What You Need to Know Before Reading This Book p. 2 How This Book Is Organized p.
Introduction p. 1 Who Should Read This Book? p. 1 What You Need to Know Before Reading This Book p. 2 How This Book Is Organized p. 2 Conventions Used in This Book p. 2 Introduction to UNIX p. 5 An Overview
More informationEECS 470 Lab 5. Linux Shell Scripting. Friday, 1 st February, 2018
EECS 470 Lab 5 Linux Shell Scripting Department of Electrical Engineering and Computer Science College of Engineering University of Michigan Friday, 1 st February, 2018 (University of Michigan) Lab 5:
More informationBasic Linux (Bash) Commands
Basic Linux (Bash) Commands Hint: Run commands in the emacs shell (emacs -nw, then M-x shell) instead of the terminal. It eases searching for and revising commands and navigating and copying-and-pasting
More informationWeek 2 Lecture 3. Unix
Lecture 3 Unix Terminal and Shell 2 Terminal Prompt Command Argument Result 3 Shell Intro A system program that allows a user to execute: shell functions (e.g., ls -la) other programs (e.g., eclipse) shell
More informationCST Algonquin College 2
The Shell Kernel (briefly) Shell What happens when you hit [ENTER]? Output redirection and pipes Noclobber (not a typo) Shell prompts Aliases Filespecs History Displaying file contents CST8207 - Algonquin
More informationEssential Unix (and Linux) for the Oracle DBA. Revision no.: PPT/2K403/02
Essential Unix (and Linux) for the Oracle DBA Revision no.: PPT/2K403/02 Architecture of UNIX Systems 2 UNIX System Structure 3 Operating system interacts directly with Hardware Provides common services
More informationIntroduction to Linux
Introduction to Linux January 2011 Don Bahls User Consultant (Group Leader) bahls@arsc.edu (907) 450-8674 Overview The shell Common Commands File System Organization Permissions Environment Variables I/O
More informationToday. Operating System Evolution. CSCI 4061 Introduction to Operating Systems. Gen 1: Mono-programming ( ) OS Evolution Unix Overview
Today CSCI 4061 Introduction to s Instructor: Abhishek Chandra OS Evolution Unix Overview Unix Structure Shells and Utilities Calls and APIs 2 Evolution How did the OS evolve? Generation 1: Mono-programming
More informationUnix Handouts. Shantanu N Kulkarni
Unix Handouts Shantanu N Kulkarni Abstract These handouts are meant to be used as a study aid during my class. They are neither complete nor sincerely accurate. The idea is that the participants should
More informationIntroduction. Let s start with the first set of slides
Tux Wars Class - 1 Table of Contents 1) Introduction to Linux and its history 2) Booting process of a linux system 3) Linux Kernel 4) What is a shell 5) Bash Shell 6) Anatomy of command 7) Let s make our
More informationDATA 301 Introduction to Data Analytics Command Line. Dr. Ramon Lawrence University of British Columbia Okanagan
DATA 301 Introduction to Data Analytics Command Line Dr. Ramon Lawrence University of British Columbia Okanagan ramon.lawrence@ubc.ca Why learn the Command Line? The command line is the text interface
More informationWhy learn the Command Line? The command line is the text interface to the computer. DATA 301 Introduction to Data Analytics Command Line
DATA 301 Introduction to Data Analytics Command Line Why learn the Command Line? The command line is the text interface to the computer. DATA 301: Data Analytics (2) Understanding the command line allows
More informationIntroduction. File System. Note. Achtung!
3 Unix Shell 1: Introduction Lab Objective: Explore the basics of the Unix Shell. Understand how to navigate and manipulate file directories. Introduce the Vim text editor for easy writing and editing
More informationMills HPC Tutorial Series. Linux Basics I
Mills HPC Tutorial Series Linux Basics I Objectives Command Line Window Anatomy Command Structure Command Examples Help Files and Directories Permissions Wildcards and Home (~) Redirection and Pipe Create
More informationCommand-line interpreters
Command-line interpreters shell Wiki: A command-line interface (CLI) is a means of interaction with a computer program where the user (or client) issues commands to the program in the form of successive
More informationUNIX Kernel. UNIX History
UNIX History UNIX Kernel 1965-1969 Bell Labs participates in the Multics project. 1969 Ken Thomson develops the first UNIX version in assembly for an DEC PDP-7 1973 Dennis Ritchie helps to rewrite UNIX
More informationLinux at the Command Line Don Johnson of BU IS&T
Linux at the Command Line Don Johnson of BU IS&T We ll start with a sign in sheet. We ll end with a class evaluation. We ll cover as much as we can in the time allowed; if we don t cover everything, you
More informationWelcome to Linux. Lecture 1.1
Welcome to Linux Lecture 1.1 Some history 1969 - the Unix operating system by Ken Thompson and Dennis Ritchie Unix became widely adopted by academics and businesses 1977 - the Berkeley Software Distribution
More informationUnix as a Platform Exercises + Solutions. Course Code: OS 01 UNXPLAT
Unix as a Platform Exercises + Solutions Course Code: OS 01 UNXPLAT Working with Unix Most if not all of these will require some investigation in the man pages. That's the idea, to get them used to looking
More informationToday. Operating System Evolution. CSCI 4061 Introduction to Operating Systems. Gen 1: Mono-programming ( ) OS Evolution Unix Overview
Today CSCI 4061 Introduction to s Instructor: Abhishek Chandra OS Evolution Unix Overview Unix Structure Shells and Utilities Calls and APIs 2 Evolution How did the OS evolve? Dependent on hardware and
More informationChapter 1 - Introduction. September 8, 2016
Chapter 1 - Introduction September 8, 2016 Introduction Overview of Linux/Unix Shells Commands: built-in, aliases, program invocations, alternation and iteration Finding more information: man, info Help
More informationProcesses. Shell Commands. a Command Line Interface accepts typed (textual) inputs and provides textual outputs. Synonyms:
Processes The Operating System, Shells, and Python Shell Commands a Command Line Interface accepts typed (textual) inputs and provides textual outputs. Synonyms: - Command prompt - Shell - CLI Shell commands
More informationIMPORTANT: Logging Off LOGGING IN
These are a few basic Unix commands compiled from Unix web sites, and printed materials. The main purpose is to help a beginner to go around with fewer difficulties. Therefore, I will be adding to this
More informationAn Introduction to Unix Power Tools
An to Unix Power Tools Randolph Langley Department of Computer Science Florida State University August 27, 2008 History of Unix Unix Today Command line versus graphical interfaces to COP 4342, Fall History
More informationCISC 220 fall 2011, set 1: Linux basics
CISC 220: System-Level Programming instructor: Margaret Lamb e-mail: malamb@cs.queensu.ca office: Goodwin 554 office phone: 533-6059 (internal extension 36059) office hours: Tues/Wed/Thurs 2-3 (this week
More informationShells and Shell Programming
Shells and Shell Programming 1 Shells A shell is a command line interpreter that is the interface between the user and the OS. The shell: analyzes each command determines what actions are to be performed
More informationLecture # 2 Introduction to UNIX (Part 2)
CS390 UNIX Programming Spring 2009 Page 1 Lecture # 2 Introduction to UNIX (Part 2) UNIX is case sensitive (lowercase, lowercase, lowercase) Logging in (Terminal Method) Two basic techniques: 1. Network
More informationUnix/Linux Operating System. Introduction to Computational Statistics STAT 598G, Fall 2011
Unix/Linux Operating System Introduction to Computational Statistics STAT 598G, Fall 2011 Sergey Kirshner Department of Statistics, Purdue University September 7, 2011 Sergey Kirshner (Purdue University)
More informationUsing UNIX. -rwxr--r-- 1 root sys Sep 5 14:15 good_program
Using UNIX. UNIX is mainly a command line interface. This means that you write the commands you want executed. In the beginning that will seem inferior to windows point-and-click, but in the long run the
More informationSet 1 MCQ Which command is used to sort the lines of data in a file in reverse order A) sort B) sh C) st D) sort -r
1. Which symbol will be used with grep command to match the pattern pat at the beginning of a line? A) ^pat B) $pat C) pat$ D) pat^ 2. Which command is used to sort the lines of data in a file in reverse
More informationIntroduction to Linux
Introduction to Linux M Tech CS I 2015-16 Arijit Bishnu Debapriyo Majumdar Sourav Sengupta Mandar Mitra Login, Logout, Change password $ ssh, ssh X secure shell $ ssh www.isical.ac.in $ ssh 192.168 $ logout,
More informationUnix Tools / Command Line
Unix Tools / Command Line An Intro 1 Basic Commands / Utilities I expect you already know most of these: ls list directories common options: -l, -F, -a mkdir, rmdir make or remove a directory mv move/rename
More informationEECS2301. Lab 1 Winter 2016
EECS2301 Lab 1 Winter 2016 Lab Objectives In this lab, you will be introduced to the Linux operating system. The basic commands will be presented in this lab. By the end of you alb, you will be asked to
More informationConnecting to ICS Server, Shell, Vim CS238P Operating Systems fall 18
Connecting to ICS Server, Shell, Vim CS238P Operating Systems fall 18 By Aftab Hussain (Adapted from Claudio A. Parra s Slides for Fall 18 CS-143A) October 5 2018 University of California, Irvine Andromeda
More informationLinux Command Line Primer. By: Scott Marshall
Linux Command Line Primer By: Scott Marshall Draft: 10/21/2007 Table of Contents Topic Page(s) Preface 1 General Filesystem Background Information 2 General Filesystem Commands 2 Working with Files and
More informationUNIX Quick Reference
UNIX Quick Reference This card represents a brief summary of some of the more frequently used UNIX commands that all users should be at least somewhat familiar with. Some commands listed have much more
More informationIntroduction to Linux. Woo-Yeong Jeong Computer Systems Laboratory Sungkyunkwan University
Introduction to Linux Woo-Yeong Jeong (wooyeong@csl.skku.edu) Computer Systems Laboratory Sungkyunkwan University http://csl.skku.edu What is Linux? A Unix-like operating system of a computer What is an
More informationCS 25200: Systems Programming. Lecture 11: *nix Commands and Shell Internals
CS 25200: Systems Programming Lecture 11: *nix Commands and Shell Internals Dr. Jef Turkstra 2018 Dr. Jeffrey A. Turkstra 1 Lecture 11 Shell commands Basic shell internals 2018 Dr. Jeffrey A. Turkstra
More informationUnix background. COMP9021, Session 2, Using the Terminal application, open an x-term window. You type your commands in an x-term window.
Unix background COMP9021, Session 2, 2016 1 Introduction Using the Terminal application, open an x-term window. You type your commands in an x-term window. Many commands take one or more arguments. Many
More informationIntroduction to UNIX. Logging in. Basic System Architecture 10/7/10. most systems have graphical login on Linux machines
Introduction to UNIX Logging in Basic system architecture Getting help Intro to shell (tcsh) Basic UNIX File Maintenance Intro to emacs I/O Redirection Shell scripts Logging in most systems have graphical
More informationUnix/Linux Primer. Taras V. Pogorelov and Mike Hallock School of Chemical Sciences, University of Illinois
Unix/Linux Primer Taras V. Pogorelov and Mike Hallock School of Chemical Sciences, University of Illinois August 25, 2017 This primer is designed to introduce basic UNIX/Linux concepts and commands. No
More informationLinux & Shell Programming 2014
Unit -1: Introduction to UNIX/LINUX Operating System Practical Practice Questions: Find errors (if any) otherwise write output or interpretation of following commands. (Consider default shell is bash shell.)
More informationIntroduction to Linux
p. 1/40 Introduction to Linux Xiaoxu Guan High Performance Computing, LSU January 31, 2018 p. 2/40 Outline What is an OS or Linux OS? Basic commands for files/directories Basic commands for text processing
More informationCS 307: UNIX PROGRAMMING ENVIRONMENT KATAS FOR EXAM 2
CS 307: UNIX PROGRAMMING ENVIRONMENT KATAS FOR EXAM 2 Prof. Michael J. Reale Fall 2014 COMMAND KATA 7: VARIABLES Command Kata 7: Preparation First, go to ~/cs307 cd ~/cs307 Make directory dkata7 and go
More informationFREEENGINEER.ORG. 1 of 6 11/5/15 8:31 PM. Learn UNIX in 10 minutes. Version 1.3. Preface
FREEENGINEER.ORG Learn UNIX in 10 minutes. Version 1.3 Preface This is something that I had given out to students (CAD user training) in years past. The purpose was to have on one page the basics commands
More informationUnix/Linux Basics. Cpt S 223, Fall 2007 Copyright: Washington State University
Unix/Linux Basics 1 Some basics to remember Everything is case sensitive Eg., you can have two different files of the same name but different case in the same folder Console-driven (same as terminal )
More informationScripting Languages Course 1. Diana Trandabăț
Scripting Languages Course 1 Diana Trandabăț Master in Computational Linguistics - 1 st year 2017-2018 Today s lecture Introduction to scripting languages What is a script? What is a scripting language
More informationIntroduction to Linux. Roman Cheplyaka
Introduction to Linux Roman Cheplyaka Generic commands, files, directories What am I running? ngsuser@ubuntu:~$ cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=16.04 DISTRIB_CODENAME=xenial DISTRIB_DESCRIPTION="Ubuntu
More informationLab 2: Linux/Unix shell
Lab 2: Linux/Unix shell Comp Sci 1585 Data Structures Lab: Tools for Computer Scientists Outline 1 2 3 4 5 6 7 What is a shell? What is a shell? login is a program that logs users in to a computer. When
More informationUnix as a Platform Exercises. Course Code: OS-01-UNXPLAT
Unix as a Platform Exercises Course Code: OS-01-UNXPLAT Working with Unix 1. Use the on-line manual page to determine the option for cat, which causes nonprintable characters to be displayed. Run the command
More informationGetting Started. Running Utilities. Shells. Special Characters. Special Characters. Chapter 2 Unix Utilities for non-programmers
Chapter 2 Unix Utilities for non-programmers Graham Glass and King Ables, UNIX for Programmers and Users, Third Edition, Pearson Prentice Hall, 2003. Original Notes by Raj Sunderraman Converted to presentation
More informationA Brief Introduction to the Linux Shell for Data Science
A Brief Introduction to the Linux Shell for Data Science Aris Anagnostopoulos 1 Introduction Here we will see a brief introduction of the Linux command line or shell as it is called. Linux is a Unix-like
More informationLinux Essentials. Programming and Data Structures Lab M Tech CS First Year, First Semester
Linux Essentials Programming and Data Structures Lab M Tech CS First Year, First Semester Adapted from PDS Lab 2014 and 2015 Login, Logout, Password $ ssh mtc16xx@192.168.---.--- $ ssh X mtc16xx@192.168.---.---
More informationCSE 391 Lecture 1. introduction to Linux/Unix environment
CSE 391 Lecture 1 introduction to Linux/Unix environment slides created by Marty Stepp, modified by Jessica Miller & Ruth Anderson http://www.cs.washington.edu/391/ 1 2 Lecture summary Course introduction
More informationIntroduction to Linux
Introduction to Linux Prof. Jin-Soo Kim( jinsookim@skku.edu) TA - Kisik Jeong (kisik@csl.skku.edu) Computer Systems Laboratory Sungkyunkwan University http://csl.skku.edu What is Linux? A Unix-like operating
More informationShells and Shell Programming
Shells and Shell Programming Shells A shell is a command line interpreter that is the interface between the user and the OS. The shell: analyzes each command determines what actions are to be performed
More informationIntroduction to Linux Workshop 1
Introduction to Linux Workshop 1 The George Washington University SEAS Computing Facility Created by Jason Hurlburt, Hadi Mohammadi, Marco Suarez hurlburj@gwu.edu Logging In The lab computers will authenticate
More informationVirtual Machine. Linux flavor : Debian. Everything (except slides) preinstalled for you. https://www.virtualbox.org/
Virtual Machine Anyone have problems installing it? VM: Virtual Box - allows you to run a different operating system within the current operating system of your machine. https://www.virtualbox.org/ Linux
More informationSystem Programming. Introduction to Unix
Content : by Dr. B. Boufama School of Computer Science University of Windsor Instructor: Dr. A. Habed adlane@cs.uwindsor.ca http://cs.uwindsor.ca/ adlane/60-256 Content Content 1 Introduction 2 3 Introduction
More informationAnswers to AWK problems. Shell-Programming. Future: Using loops to automate tasks. Download and Install: Python (Windows only.) R
Today s Class Answers to AWK problems Shell-Programming Using loops to automate tasks Future: Download and Install: Python (Windows only.) R Awk basics From the command line: $ awk '$1>20' filename Command
More informationIntroduction to Unix and Linux. Workshop 1: Directories and Files
Introduction to Unix and Linux Workshop 1: Directories and Files Genomics Core Lab TEXAS A&M UNIVERSITY CORPUS CHRISTI Anvesh Paidipala, Evan Krell, Kelly Pennoyer, Chris Bird Genomics Core Lab Informatics
More informationUnix System Architecture, File System, and Shell Commands
Unix System Architecture, File System, and Shell Commands Prof. (Dr.) K.R. Chowdhary, Director COE Email: kr.chowdhary@iitj.ac.in webpage: http://www.krchowdhary.com JIET College of Engineering August
More informationIntroduction to Linux
Introduction to Linux Prof. Jin-Soo Kim( jinsookim@skku.edu) TA - Dong-Yun Lee (dylee@csl.skku.edu) Computer Systems Laboratory Sungkyunkwan University http://csl.skku.edu What is Linux? A Unix-like operating
More informationShort Read Sequencing Analysis Workshop
Short Read Sequencing Analysis Workshop Day 2 Learning the Linux Compute Environment In-class Slides Matt Hynes-Grace Manager of IT Operations, BioFrontiers Institute Review of Day 2 Videos Video 1 Introduction
More informationStd: XI CHAPTER-3 LINUX
Commands: General format: Command Option Argument Command: ls - Lists the contents of a file. Option: Begins with minus sign (-) ls a Lists including the hidden files. Argument refers to the name of a
More informationWhere can UNIX be used? Getting to the terminal. Where are you? most important/useful commands & examples. Real Unix computers
Where can UNIX be used? Introduction to Unix: most important/useful commands & examples Bingbing Yuan Jan. 19, 2010 Real Unix computers tak, the Whitehead h Scientific Linux server Apply for an account
More information