sudo !! Sudo the last command \\ ctrl l Clear terminal \\ ctrl r Command history reverse search \\ history Show command history number to rerun command \\ HISTTIMEFORMAT="%y-%m-%d %t " To add date to history ./bashrc to make perm \\ pushd popd Push and pop last directory to return to a specific spot \\ ctrl z Session to background \\ fg Bring it back to the foreground \\ jobs List of jobs in bg \\ ctrl shift +- Font size \\ ctrl u Delete all text on line \\ ctrl a Home cursor \\ ctrl e End of line \\ ; Concatenate commands \\ && Does same thing but does not process second command if first is invalid. \\ tail -f Follow a file \\ cat Display content of file \\ truncate -s {size} Empty a file w 0 or set other size \\ mount | column -t Pretty up columned text \\ micro Better text ed than nano \\