ls=`ls -s ~/Maildir/.bsf.spam2cl/cur/` case "${ls}" in "total 0") echo 'spam2cl = 0' ;; *) echo 'spam2cl' bsfilter --add-clean ~/Maildir/.bsf.spam2cl/cur/* mv ~/Maildir/.bsf.spam2cl/cur/* ~/Maildir/cur/ bsfilter --update ;; esac ls=`ls -s …