Essential Linux Commands

linux-commands

ls, ls -la                        # list files
cd                                # change directory
pwd                               # current path
touch                             # create new files
cat                               # read file content
echo                              # output content
less                              # read big file
mkdir, mkdir -p                   # create directory
cp, cp -r                         # copy file, directory
mv                                # move or rename file, dir
rm, rm -r                         # delete file, dir
ln -s                             # create shortcut      
clear                             # clear screen
exit                              # exit terminal
tar czf arc.tar.gv f...           # create archive
tar xzf arc.tar.gv                # extract archive
gzip, gunzip                      # compress/decompress
nano                              # edit file
vim                               # edit file
ps aux                            # view all processes
top                               # view all processes
kill PID                          # force stop process
chmod                             # change permission
which cmd                         # find out cmd location
wget, wget -c                     # download file
cmd | grep                        # filter cmd output

apt install|remove|update|upgrade|dist-upgrade       
snap install|remove|refresh

ssh                               # remote manage server
scp                               # remove copy or download

service service-name start|stop|restart|reload 

!!                                # recall last cmd

shutdown -r -now                  # restart right now
export                            # Change PATH var

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git init                          # create git repo
git add [files]                   # add files for staging
git commit -m [msg]               # commit changes
git status                        # view repo status
git log                           # view commit history
git tag [tag]                     # tag current commit
git checkout [tag]                # checkout tagged commit
git checkout [hash]               # checkout commit by hash
git branch                        # view existing branches
git branch [name]                 # create branch
git checkout [branch]             # change branch
git checkout                      # change back to master/main
git checkout -b [branch]          # create branch and switch to it
git merge [branch]                # merge [branch] to current branch
git rebase [branch]               # bombine [branch] with curren branch
git init --bare                   # create repo with only history
git clone [repo]                  # create repo based on [repo]
git pull                          # get updates from origin repo
git push                          # send update to origin repo
git remote add origin [repo]      # set origin for current repo