w | grep load | cut -d, -f1,4 | sed -e 's/\(.*\)up.*load average:\(.*\)/\1;\2/g' | xargs echo "`date '+%m/%d/%y'`;" | tr -d ' '
for file in *.jpg.jpg; do mv $file `echo $file | sed 's/\(.*\.\)jpg\.jpg/\1jpg/'`;done;Más info en: http://6v8.gamboni.org/Mass-renaming-with-linux-shell.html