function calc() { echo "$*" | bc; }
function mktar() { tar czf "${1%%/}.tar.gz" "${1%%/}/"; }
function mkmine() { sudo chown -R ${USER} ${1:-.}; }

function newmail()
{
    tot=0
    for mb in $MAIL/*; do
        cnt=`ls -1 $mb/new/|wc -l`
        tot=`expr $tot + $cnt`
        echo "$(basename $mb):$cnt"
    done
    echo "Total:$tot"
}

# sanitize - set file/directory owner and permissions to normal values (644/755)
# Usage: sanitize <file>
sanitize() {
    chmod -R u=rwX,go=rX "$@"
    chown -R ${USER}.users "$@"
}