find /tmp -type f -name '*' -mtime +7 -print0 | xargs -p -0 -I % sh -c 'echo %; /bin/rm -f %'

find /proc -user username -maxdepth 1 -type d -mtime +7 -exec basename {} \; | xargs kill -9

find . -type d -print | /usr/bin/xargs -P 4 -I {} /bin/tar czf {}.tar.gz {}

find . -type f -and -iname '*.deb' | /usr/bin/xargs -n1 -I x dpkg -i x

dpkg -l linux-* | awk '/^ii/{ print $2 }' | grep -e -v $(uname -r | cut -f1,2 -d"-") | grep -e [0-9]

: 'delete files in current directory containing: + { ; " \ = ? ~ ( ) < > & * | $'

for f in *; do readonly badname=`echo "$f" | sed -n /[\+\{\"\\\=\?~\(\)\<\>\&\*\|\$\/p` && rm $badname 2> /dev/null; done