Aus dem ~/bin/

falsenamekiller.py

import os
illegal = list('''!"#$%&\'()*+,/:;<=>?@[\\]^_`{|}~ ''')
repl = "_"
for root,dir,files in os.walk(os.getcwd()):
        for fi in files:
                for ill in illegal:
                        if ill in fi:     
                                print "found ",  os.path.join(root,fi)                        
                                newname = fi.replace(ill,repl)
                                os.rename( os.path.join(root,fi) , os.path.join(root,newname) )

updates-available

#!/bin/sh

if [ -x /usr/lib/update-notifier/apt-check ]; then
        /usr/lib/update-notifier/apt-check 2>&1 | tail -n 1 | sed "s/;.*$/\!/"
elif [ -x /usr/bin/apt-get ]; then
        /usr/bin/apt-get -s -o Debug::NoLocking=true upgrade | grep ^Inst | wc -l | sed "s/$/\!/"
elif [ -x /usr/bin/yum ]; then
        /usr/bin/yum list updates | grep -c "updates" | sed "s/$/\!/"
else
        echo "?"
fi

compare debian package detox

Very old, never used, nice to know thanks ツ