##Git Commands
| Command | Description |
git init | Initialize a local Git repository |
git clone ssh://git@github.com/[username]/[repository-name].git | Create a local copy of a remote repository |
Basic Snapshotting
| Command | Description |
git status | Check status |
git add [file-name.txt] | Add a file to the staging area |
git add -A | Add all new and changed files to the staging area |
git commit -m "[commit message]" | Commit changes |
git rm -r [file-name.txt] | Remove a file (or folder) |
Branching & Merging
| Command | Description |
git branch | List branches (the asterisk denotes the current branch) |
git branch -a | List all branches (local and remote) |
git branch [branch name] | Create a new branch |
git branch -d [branch name] | Delete a branch |
git push origin --delete [branch name] | Delete a remote branch |
git checkout -b [branch name] | Create a new branch and switch to it |
git checkout -b [branch name] origin/[branch name] | Clone a remote branch and switch to it |
git branch -m [old branch name] [new branch name] | Rename a local branch |
git checkout [branch name] | Switch to a branch |
git checkout - | Switch to the branch last checked out |
git checkout -- [file-name.txt] | Discard changes to a file |
git merge [branch name] | Merge a branch into the active branch |
git merge [source branch] [target branch] | Merge a branch into a target branch |
git stash | Stash changes in a dirty working directory |
git stash clear | Remove all stashed entries |
Sharing & Updating Projects
| Command | Description |
git push origin [branch name] | Push a branch to your remote repository |
git push -u origin [branch name] | Push changes to remote repository (and remember the branch) |
git push | Push changes to remote repository (remembered branch) |
git push origin --delete [branch name] | Delete a remote branch |
git pull | Update local repository to the newest commit |
git pull origin [branch name] | Pull changes from remote repository |
git remote add origin ssh://git@github.com/[username]/[repository-name].git | Add a remote repository |
git remote set-url origin ssh://git@github.com/[username]/[repository-name].git | Set a repository's origin branch to SSH |
Inspection & Comparison
| Command | Description |
git log | View changes |
git log --summary | View changes (detailed) |
git log --oneline | View changes (briefly) |
git diff [source branch] [target branch] | Preview changes before merging |
Linux Cheat Sheet
##File Commands:
ls – directory listing
ls -al – formatted listing with hidden files
cd dir - change directory to dir
cd – change to home
pwd – show current directory
mkdir dir – create a directory dir
rm file – delete file
rm -r dir – delete directory dir
rm -f file – force remove file
rm -rf dir – force remove directory dir *
cp file1 file2 – copy file1 to file2
cp -r dir1 dir2 – copy dir1 to dir2; create dir2 if it doesn't exist
mv file1 file2 – rename or move file1 to file2 if file2 is an existing directory, moves file1 into directory file2
ln -s file link – create symbolic link link to file
touch file – create or update file
cat > file – places standard input into file
more file – output the contents of file
head file – output the first 10 lines of file
tail file – output the last 10 lines of file
tail -f file – output the contents of file as it grows, starting with the last 10 lines
##Process Management:
ps – display your currently active processes
top – display all running processes
kill pid – kill process id pid
killall proc – kill all processes named proc *
bg – lists stopped or background jobs; resume a stopped job in the background
fg – brings the most recent job to foreground
fg n – brings job n to the foreground
##File Permissions:
chmod octal file – change the permissions of file to octal, which can be found separately for user, group, and world by adding:
4 – read (r)
2 – write (w)
1 – execute (x)
###Examples:
chmod 777 – read, write, execute for all
chmod 755 – rwx for owner, rx for group and world
##SSH:
ssh user@host – connect to host as user
ssh -p port user@host – connect to host on port port as user
ssh-copy-id user@host – add your key to host for user to enable a keyed or passwordless login
##Searching:
grep pattern files – search for pattern in files
grep -r pattern dir – search recursively for pattern in dir
command | grep pattern – search for pattern in the output of command
locate file – find all instances of file
##System Info:
date – show the current date and time
cal – show this month's calendar
uptime – show current uptime
w – display who is online
whoami – who you are logged in as
finger user – display information about user
uname -a – show kernel information
cat /proc/cpuinfo – cpu information
cat /proc/meminfo – memory information
man command – show the manual for command
df – show disk usage
du – show directory space usage
free – show memory and swap usage
whereis app – show possible locations of app
which app – show which app will be run by default
##Compression:
tar cf file.tar files – create a tar named file.tar containing files
tar xf file.tar – extract the files from file.tar
tar czf file.tar.gz files – create a tar with Gzip compression
tar xzf file.tar.gz – extract a tar using Gzip
tar cjf file.tar.bz2 – create a tar with Bzip2 compression
tar xjf file.tar.bz2 – extract a tar using Bzip2
gzip file – compresses file and renames it to file.gz
gzip -d file.gz – decompresses file.gz back to file
##Network:
ping host – ping host and output results
whois domain – get whois information for domain
dig domain – get DNS information for domain
dig -x host – reverse lookup host
wget file – download file
wget -c file – continue a stopped download
##Installation:
dpkg -i pkg.deb – install a package (Debian)
rpm -Uvh pkg.rpm – install a package (RPM)
##Install from source:
./configure
make
make install
##Shortcuts:
Ctrl+C – halts the current command
Ctrl+Z – stops the current command, resume with
fg in the foreground or bg in the background
Ctrl+D – log out of current session, similar to exit
Ctrl+W – erases one word in the current line
Ctrl+U – erases the whole line
Ctrl+R – type to bring up a recent command
!! - repeats the last command
exit – log out of current session