Margus Roo

# 100MB file for /tmp

dd if=/dev/zero of=/dev/tmpMnt bs=1024 count=100000

# extended filesystem

mke2fs /dev/tmpMnt

# backup cp -p -r /tmp /home/backup/tmp

# mount with noexec

mount -o loop,noexec,nosuid,rw /dev/tmpMnt /tmp

chmod 0777 /tmp

# add to fstab so it can reboot

vi /etc/fstab

/dev/tmpMnt /tmp ext2 loop,noexec,nosuid,rw 0 0

# now nothing should run # bash: ./binary-program: Permission denied

Posted in: Linux by margusja /