Find disk space that's being used du -cha --max-depth=1 /var | grep -E "M|G" Find Overall Disk space df -h Find space used by directory du -sh /home Truncate File truncate -s 0 ./filename Grep Stuff Search for files above 50M find . -type f -size +50M Making a node executable Add #!/usr/bin/env node to the top of file mkdir ~/bin cp script ~/bin export PATH=$PATH:~/bin source ~/.bashrc