Код:
#!/bin/bash
dpkg-scanpackages . /dev/null > Packages 2>/dev/null
ls -1 ./*.deb | sort > old.list
awk '/^Filename: / {print $2}' Packages | sort > new.list
diff {old,new}.list | grep '^< ' | sed 's/^< //' | xargs rm -f
rm -f {old,new}.list
так лучше ?
