Here are some simple but most used ones. # go back to the last directory cd - # run last command with sudo sudo !! # truncate file > /tmp/file-to

Here are some simple but most used ones. # go back to the last directory cd - # run last command with sudo sudo !! # truncate file > /tmp/file-to-truncate.txt # show directory size du -sh my-dir # refresh output of command every 2 seconds (needs watch command) watch ls /tmp # check how long a command takes time du -sh mydir Then I also have a neat function for cd ..: function ..() { for i in $(seq 1 $1); do cd ..; done } # cd .. .. # cd ../../../../ .. 4