Managing Projects with Git

Transcription

1 Managing Projects with Git (and other command-line skills) Dr. Chris Mayfield Department of Computer Science James Madison University Feb 09, 2018

2 Part 1: Command Line

3 Review as needed YouTube video tutorials CS 149 lab the basics; browsing files S16/activities/unix tutorial/ CS 101 lab operating system related Windows users: install PuTTY and WinSCP (connect to student.cs.jmu.edu) Feb 09, 2018 Managing Projects with Git 3 of 15

4 Example command: less What does less mean? Back in the day, everything was command line The program more shows one screen at a time The program less is way better than more :) Keyboard shortcuts Use up/down arrows and page up/down g or G : go to first / last line of text / or? : search forward / backward Press h for help Press q to quit Feb 09, 2018 Managing Projects with Git 4 of 15

5 What keys do I press? How do I exit? ssh student.cs.jmu.edu psql -h db.cs.jmu.edu less movies.csv exit or Ctrl-D \q or Ctrl-D q What are the most important keys? Tab command completion Up/down command history Feb 09, 2018 Managing Projects with Git 5 of 15

6 Part 2: Group Database

7 Your group database To connect using psql psql -h db.cs.jmu.edu absent (Example: group name is absent) Remember to change the owner CREATE TABLE foo (...); -- owned by current user ALTER TABLE foo OWNER TO absent; GP2 will use psql to copy data psql -c "COPY (...) TO STDOUT;" vdoe \ psql -c "COPY foo FROM STDIN;" absent Note the \ is for writing multiline commands Feb 09, 2018 Managing Projects with Git 7 of 15

8 Input and output Pipelining: make the output of p 1 the input of p 2 program1 program2 grep 2012 movies.csv sort head -n 20 Redirection: read a file instead of the keyboard program < input file > output file psql absent < create.sql These operators work on Linux, Mac, and Windows! Feb 09, 2018 Managing Projects with Git 8 of 15

9 Environment variables Instead of typing: psql -h db.cs.jmu.edu -U mayfiecs absent Define variables: export PGHOST=db.cs.jmu.edu export PGUSER=mayfiecs export PGDATABASE=absent psql (with no arguments) (add to /.profile to make them permanent) Feb 09, 2018 Managing Projects with Git 9 of 15

10 Part 3: GitHub Repository

11 What is Git/GitHub? Git is a version control system GitHub is a social network Tutorial: tutorial/ Cheat Sheet: Feb 09, 2018 Managing Projects with Git 11 of 15

12 Setup (IMPORTANT) git config --global user.name "Firstname Lastname" set a name that is identifiable for credit when review version history git config --global user. " address" set an address that will be associated with each history marker git config --global color.ui auto set automatic command line coloring for Git for easy reviewing Feb 09, 2018 Managing Projects with Git 12 of 15

13 GitHub simplified 1. Clone your repository (one-time setup) git clone 2. Make changes to the files Using your favorite editors, dev tools, etc. 3. Add new files, commit changes git add newfile.txt git commit -m this is what I changed 4. Pull changes from team members git pull 5. Push your changes to the repository git push Feb 09, 2018 Managing Projects with Git 13 of 15

14 Git quick reference Typical workflow git pull merge in the latest commits... make changes to your files git status what files have I changed? git diff show changes I have made git commit -m "message" save changes to repository git push upload my latest commits Other commands git add FILE git rm FILE git mv SRC DST git checkout FILE git help add new FILE to repository remove FILE from repository move/rename in repository undo local changes to FILE show a list of git commands Feb 09, 2018 Managing Projects with Git 14 of 15

15 Using meld with git In the Linux lab, use meld. instead of git diff Feb 09, 2018 Managing Projects with Git 15 of 15