for f in .; do pre="${f%.}"; suf="${f##.}"; mv -i -f -- "$f" "${pre//./_}.${suf}"; doneCount number of directories in the current directory using Linux cli
ls -1 | wc -lCount number of files in a directory using Linux cli
ls -l . | egrep -c '^-'How To Find My Public IP Address From Command Line On a Mac OS
Exécutez la commande suivante dans le terminal :
dig +short myip.opendns.com @resolver1.opendns.com