QUESTION BANK ON UNIX & SHELL PROGRAMMING-502 (CORE PAPER-2)

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1 BANK ON & SHELL PROGRAMMING-502 (CORE PAPER-2) TOPIC 1: VI-EDITOR MARKS YEAR 1. Explain set command of vi editor oct 2. Explain the modes of vi editor mar/ 2013 oct 3. Explain vi editor oct 4. List the text modification command of vi editor oct 5. List disadvantages of vi editor oct 6. Which command of vi editor is used to display line 2012oct/ 2/5 number before each line? 2011oct TOPIC 2: S ON SHELL MARKS YEAR 1. Explain features of Shell , What is shell Define a shell. Explain meta character that shell use to match files names. 4. List process execution meta-characters of shell Write a note on different role played by shell during the program execution 4/7 2010/ How can you create sub-shell? What is the difference between login shell and current shell? Explain command line interpretation of the shell. 6/5 2014/ Give the significance of special parameters used by shell List at least two popular shells including their default prompt Prepared By: Ms. Nidhi Solanki (Assist. Prof.) Page 1

2 TOPIC 3: DIRECTORY & FILE S: MARKS YEAR 1. Discuss relative and absolute file access permissions with example oct 2. What do you mean by link? Give the difference between 2013mar/ soft link & hard link. Also write disadvantages when using 5/ oct soft link. 3. What does /etc/passwd contains? oct/ 2012oct 4. What are the importance of /tmp directory? oct 5. Explain commands for changing file permissions and ownership oct 6. What is the purpose of /bin directory of Unix file system? oct oct/20 Discuss relative and absolute file access permissions with 6/7/4 11oct/2010 example.(explain chmod) oct 8. Explain directory structure of oct 9. Which file attribute changes when you copy a file from other user account oct 10. How can you make out whether two files are copies or links oct 11. List the characteristics of Unix file system oct 12. Explain the characteristics of Unix file system oct 13. Explain types of file in Unix oct 14. Explain commands for changing file permission and ownership oct 15. write detail note on structure file system of Unix oct 16. Command to update time of a file What does /etc directory contain / Difference between cat test and cat>test What isppurpose of. and Purpose of /bin directory Difference between absolute and relative path Who can change the attribute of file and directory? How How will you forcibly remove a file to which you don t have write permission? How can you identify the invisible characters in a file Purpose of /dev/null? give proper illustration Compression and archiving of file Which file is parent of all file Prepared By: Ms. Nidhi Solanki (Assist. Prof.) Page 2

3 TOPIC 4: S ON KERNEL MARKS YEAR 1. Explain functions of kernel(list functions of kernel) 7/2 list 2012,2014, 2013,2011, 2010,2010 oct 2. Explain kernel structure architecture? 4/7 2010/2014 TOPIC 5: S ON PROCESS MARKS YEAR Define process. Which command is useful to know the 1. status of process? Explain it giving example. What are the three phases in creation of a process? What is difference between scheduling process using 2. batch command and using at command? / What do you mean by Zombie state of a process? /2012/ 2013 Which process is created by Getty process? What is 4. responsibility of getty process /2014 What do you mean by daemon? List out them. How will 5. you kill a daemon? / Explain booting sequence with init process Mechanism of process creation Explain fork() system call What are the process states in Unix How can we suspend background and foreground job What is PPID? Which process has PPID If following command run from a shell script, who will be 12. the parent and grandparent of all these processes? Cat f1 cut f1 sort r 13. State the purpose of n option with sed List process execution metacharacter of shell What does init do when a user logs out Define process? Which process has id PID Write command to kill last background job What is job? How can you move a job from the 18. background to the background to the foreground and vice versa? 19. Define fork /2012 What is job? How can we suspend a foreground and 20. background job? Prepared By: Ms. Nidhi Solanki (Assist. Prof.) Page 3

4 TOPIC 6 : PROGRAMMING CONSTRUCTS: MARKS YEAR 1. Differentiate between while and until loop? Explain for loop with an example 3/4 2014/ Explain case condition with example in shell Explain while loop in shell oct/2011 mar TOPIC 7 : S ON COMPONENTS OF FILE SYSTEM: MARKS YEAR 1. What is the purpose of boot block? What it consists of? Where the number of free i-nodes and data block stored? Explain the purpose of super block What is super block consist of? / Explain content of I-node block 7/5 2014/2011/ 2010/4 6. Explain booting sequence with init process The booting process of Unix Write a detail note on I-node table Define I-node number TOPIC 8 : GREP/sed UTILITY THEORY: MARKS YEAR 1. Write note on grep utility. 6 (2014) 2. Explain pattern matching features of grep utility /2010/ Explain insert append and change command of sed 2013/ Explain basic regular expression used with grep Explain remembered pattern of sed Explain delete and write operator in sed State the purpose of n option with sed Prepared By: Ms. Nidhi Solanki (Assist. Prof.) Page 4

5 TOPIC 9 : WRITE COMMANDS (1 mark each) TOPIC 9.1 : 2014 oct./nov. Command using sed or grep 1. Display two lines starting from 7 th line of file X1. 2. Display all blank lines between line 20 and 30 of file X1. 3. Display lines beginning either with alphabet or digit fro file X1. 4. Display the line that do not contain unix 5. Display the lines which are not starting with 2 at the beginning. 6. Write a command to replace UIX OS ON LINE NO 5 TH TO 10 TH. 7. Write a command to display all file name containing only digits in a filename. 8. To list file names consist of only 4 digits. 9. To display lines beginning with alphabets of a file X To count number of words in line 40 through 60 of file f1.txt TOPIC 9.2 : 2013 march/april commands using grep or egrep. (1 mark each) 1. Display the lines which are not starting with 2 at the beginning. 2. Display lines having exactly 50 characters of file X1. 3. Count number of blank lines in file X1. 4. Display lines having at least one * character in file X1. 5. Display lines from file X1 that containing string or unix or Unix 6. Display the directory listing. TOPIC 9.3 : 2013 oct/nov commands using grep or egrep.(1 mark each) 1. Write a command to print lines which contain Accounts. 2. Write a command to print lines which do not contain Accounts 3. Write a command to print line 10 to Write a command to substitute doshi with desai 5. Write a command to print lines with line numbers which contains Marketing 6. Write a command to display line which starts with the Prepared By: Ms. Nidhi Solanki (Assist. Prof.) Page 5

6 TOPIC 9.4 : 2013 march/april commands using sed. (1 mark each) 1. Substitute endif with fi on line 10 of file X1. 2. Display two lines starting from 7 th line of file X1. 3. Display all lines before string Unix from file X! 4. Display all blank lines between line 20 and 30 of file X1. 5. Display lines beginning either with alphabet or digit from file X1. 6. Display the lines that do not contain Unix. TOPIC 9.5 : 2011 mar/apr 1. To display all lines that contains pattern bc* in a line 2. To locate lines where second and second last character of file f1 are same 3. To replace tybca with TYBCA in input file in.sh and write those lines to output file out.sh 4. To replace all occurrence of she with he and hi with hello 5. To locate lines that begin and end with.(dot) 6. To display line 5 to 15, 25 to 35 and last line of file f1. TOPIC 9.6 : 2014 march/april 1. Write a command to print first seven line of file. 2. Write a command to sort a line of file and also remove a repeated line. 3. Replace all occurrences of SYBCA with TYBCA in 5 th line of file f1. 4. Count all occurrence of tybca in studlst. 5. Replace kernel with kernel architecture using remember pattern of sed utility. 6. To run a utility x1 at 9:00 AM. 7. Write a command to locate the Unix ignoring case. 8. Write a command to display occurrence of string tybca. 9. Write a command to display line, which start with the. 10. Write a command to display line, which ends with India. 11. Write a command to print first six line of file. Prepared By: Ms. Nidhi Solanki (Assist. Prof.) Page 6

7 TOPIC 9.7 : 2013 march/april 1. Display lines 10 to 15 from file x1. 2. Display last word of each line from a file x1. 3. To count number of characters in last line of file x1. 4. To count number of words in line 40 through 60 of file f1.txt. 5. To delete all special characters from file x1. 6. Display all line that start with let, from a file x1. TOPIC 9.8 : 2013 oct/nov 1. To remove duplicate line from a file 2. To count number of characters in last line of file X1. 3. Display the processes of user bca0 I 4. List the user from /etc/passwd in the alphabetically sorted order 5. Count the frequency of users who are logged in from more than one terminal 6. Display string in upper case of the file f1.txt. TOPIC 9.9 : 2012 oct/nov(1 mark each) 1. Count number of characters in first five lines of file X1. 2. To replace the word computer with computing of file x1. 3. Display lines whose last word is Unix of file x1 4. Display lines starting from 10 th line to the end of file X1 5. To delete all special characters from the file X1. 6. To display lines beginning with alphabets of a file X1. 7. To remove a file name as X1?(X1 followed by? character) 8. To run script X1 in background so that its execution continues even user logout from the system. 9. To display last line of a file X To deny execute permission to a group of a file X To create link between file X1 and X1.link Prepared By: Ms. Nidhi Solanki (Assist. Prof.) Page 7

8 TOPIC 9.10 : 2012 mar/apr(1 mark each) 1. To print first three lines of file tybca. 2. To sort file by last access time 3. To print field 1 and 6 from file tybca 4. To print unique line of file tybca 5. To print frequency of each line from file tybca 6. To find file having size greater than five 7. To find a file having.c extension 1. Write a command to print line which contain tybca on file dept.lst 2. Write a command to print lines which not contain tybca 3. To print line 6 to To replace first occurrence of surat with vyara in each line 5. To print content of file after deleting every ; 6. To sort on 3 column to 5 column 7. To convert small alphabets to capital 8. To print lines with line number which contain Marketing TOPIC 9.11 : 2011 oct/nov 1. Forcefully delete each file from directory tybca/my work 2. Show all hidden files from mydir/tybca 3. Sort filename by last access time from directory tybca/mywork 4. Rename file chap 1 to unit 1 5. Find out number of lines of file chap01 6. Find out inode number of file chap01 1. write a command to sort a line of file and also remove repeated line 2. Command to locate the tybca ignoring case 3. Command to display occurrence of string Sale 4. Command to display line which start with the 5. Command to display line which end with ia 6. Command to print first three lines of file 7. Command to substitute doshi with desai Prepared By: Ms. Nidhi Solanki (Assist. Prof.) Page 8

9 TOPIC 9.12 : 2011 mar/apr 1. Write a command to display all words in file 1 that begin with digit 2. To display total number of words and lines of files for which file name start with m 3. To remove all leading space from a file f1 4. To display line number before each line 5. To display line 10 to 20 from file f1 6. To remove3 dir. Tree dir1/dir2/dir3 using single command 7. To move all files begin with digit from the parent dir to current dir 8. To convert decimal number 192 to hexadecimal 9. To give read and write permission to file f1 10. To change modification time of a file f1 to dec 01 10:30 am 11. To display all unique words of file f1 TOPIC 10 : AWK UTILITY THEORY: MARKS YEAR 1. Using AWK utility explain system variables. (significance) 6/3 2014, Using AWK utility explain system variables 6/3 2014/ Using AWK utility explain Hash Arrays Using AWK utility explain any four built in functions Explain concept of array in awk utility ,2012 march,201 1,2011 mar,2010, 2010oct 6. Write note on pattern matching feature of awk utility giving example Write an awk script to display file contents in reverse.(i.e last line should be displayed first,..,first line should be displayed last.) 8. Write operators of awk Write a script using awk utility to create two 3*3 matrix and multiply it Explain matching operators of awk utility with example / Differentiate between system variables of awk utility FNR 2010/ and NR _oct 12. Explain with example the purpose of BEGIN and END block of awk utility Prepared By: Ms. Nidhi Solanki (Assist. Prof.) Page 9

10 TOPIC 11 : WRITE COMMANDS (1 mark each) TOPIC 11.1 : 2014 nov./dec. USING awk UTILITY 1. print odd numbers of words in each line 2. Print lines no 18 to 30 from file f1.txt. 3. Count the total no. of lines in a file. 4. Count occurrence of pattern Unix in file f1. 5. Print lines, which end with 5, 6, and 7 from, file f1. 6. Write a script to print 1 to 10 nos. 7. Write a command to print those lines where field2 is computer field 3> from sales file. 8. Display those words whose length is greater than 8 characters and consist of alphabet only. TOPIC 11.2 : 2014 march/april (2 mark each) 1. Print even numbers of words in each line. 2. Count occurrence of pattern operating system in file f1. 3. Display those words whose length greater than 10 characters and consist of alphabet only. TOPIC 11.3 : 2014 nov./dec. 1) Write awk script to display the user login ids, their home directories and login shells from the /etc/passwd file. 2) Switch the first two fields in each line of a text and put the result in a new file 3) To only print lines wherein the first field had a numeric value of less than 20 4) Write script using awk utility to display files contents in toggle case. Assume that file should be passed from command line.(8)(2010) Prepared By: Ms. Nidhi Solanki (Assist. Prof.) Page 10

11 TOPIC 11.4 : 2014 march/april 1. To count number of occurrence of pattern bca in file f1 2. To print words whose length is greater than 4 characters and consist digits only 3. To print even number of words in each line TOPIC 11.5 : 2010 march/april 1. Write script using awk utility to display files contents in toggle case. Assume that file should be passed from command line.(5) 2. Write a script that removes all empty files in current working directory. Appropriate data validation is expected.(3) TOPIC 12 : SHELL SCRIPTS: MARKS YEAR 1. What is the use of test statement Write a shell script to reverse a number Write a shell script to perform mathematical operations using 2013/2 5 menu. (+_*/) Write a shell script to test the file is a executable file or not Write a shell script to check whether the given file is empty or not Write a shell script to find smallest of three numbers that are read from keyboard Write a shell script to validate the name of a person accepted through the keyboard so that it does not exceed 10 chars of length Write a shell script to display list of all files in the current directory to which you have read write and execute permissions. 9. Write a shell script to check the entered no is palindrome or not 4/5/ Write a shell script to accept two decimal numbers from keyboard and display their sum in hexadecimal form. Make proper validation. Write a shell script to remove only empty files from current directory Prepared By: Ms. Nidhi Solanki (Assist. Prof.) Page /2 012/

12 12. Check whether the number is Armstrong or not Write a shell script to enter two strings, check they are equal or 2011/2 4 not, also check the length of both strings should greater than An integer or a floating point number should be accepted from user. Write a menu driven script for the following options: 1) convert decimal to binary number 2) convert decimal to octal number 3) convert decimal to hexadecimal number do proper validations Write a script that removes all empty files in current working directory. Appropriate data validation is needed. Write script to enter 5 subjects marks from command line and display % and appropriate class Write script to check entered character is uppercase lowercase numeric digit or special character TOPIC 13 : COMMANDS MARKS YEAR 1. Note on ls command with options and example(detail note) 3/7 2013, Umask Bc /20 13/ Ln Explain u,-n,-r options of sort Tee 2/3 2014/20 13/2011/ 2011 mar/201 0/2010 oct 7. Mv Shift explain expr command giving example for string manipulation list default file as well as directory permission when making has been set by the command as umask What chmod 615 employee command does? nice ,20 12,2011, 2011 mar Prepared By: Ms. Nidhi Solanki (Assist. Prof.) Page 12

13 13. find command what do you mean by Unix internal external command uniq filter ,20 12, Wall What happened when cd command is run without arguments? Explain any two communication command a command Why r option of rm is dangerous Tr / Kill More Touch 2/2/4/4 2012oct, 2012mar ch,2010/ Explain -u,-n,-r option of sort detail note on diff and comm sort command with options(any 3 option for 4 marks) 5/7/4 2012,20 11/2011 mar, chown and chgrp Ps , pr and tr filters diff?example 2 Prepared By: Ms. Nidhi Solanki (Assist. Prof.) Page ,20 10,2010 oct 32. what is use 0f v and n option with cat Significance if cp R option Head and tail filters cmp and comm , wc and cal Explain head filter difference between diff and cmp command Difference between cat and more command What will $echo* command do Purpose of n option with sed Difference between grep and fgrep command Difference between cat test and cat>test What is purpose of. and Chmod

14 46. How you use egrep and grep to take pattern from a file? give example Mail command Significance of sleep and wait command / Cut and paste command Why file command is used / Why test command is used Output of tail 20 file Write and eval ,20 10oct 54. Use of test statement Explain online communication commands 4/4 2010,20 10oct 56. batch command 2/3/3/3 2010/20 14/2013/ Explain command mv*../bin Explain cp[!a-za-z]* progs Explain significance of expr and echo Explain significance of tty What is output of head n 5 f1 and tail +5 f1 command at command 1/3/3/3/3 2010/20 14/2013/ 2011/ Why -r option of rm command is dangerous grep command use TOPIC 14 : SOME MORE IMPORTANT SHORT S MARKS YEAR 1. Explain here document What is major and minor number? What do you mean by command substitution? Devise a pipeline sequence which lists five largest files in the current working directory? What is the purpose of ^ in regular expression When do wild card characters lose their meaning? Define redirection. List out the symbols used for redirection Differentiate between $@ and $*(2) /2 013oct/ Prepared By: Ms. Nidhi Solanki (Assist. Prof.) Page 14

15 2010/2 010 oct 9. What information contained by $? And $# variable? What will be the output of following code:a= expr 5%2 echo $A What is exit status of a command? What is its normal value, and where is the value store? Explain conditional parameter substitution giving example What do you mean by pipe give example / Remembered pattern and repeated pattern , Explain pipe What is regular expression? Explain any one utility which use regular expression, with proper example How command substitution differs from piping mechanism? Explain with example Explain booting sequence of Unix OS What is difference between screen and line editor? List any two names of line and screen editor What is regular expression? Write a regular expression that matches comment line of c program Explain different role of ^ in regular expression Explain features of Unix OS Explain remembered pattern and repeated pattern giving suitable example Give significance of following system variable HOME,PSI Explain find operator in detail Features of OS Which attribute change, when* you copy a file from another user account Significance of FSCK utility Detail note on FSCK utility of Unix Purpose of sticky bit / Differentiate > and >> Prepared By: Ms. Nidhi Solanki (Assist. Prof.) Page 15