Applying Immutability to a ZFS File
Use the following syntax to make a file immutable:
$ chmod S+ci file.1 $ echo this >>file.1 -bash: file.1: Insufficient privileges $ rm file.1 rm: cannot remove `file.1': Insufficient privileges
You can display special attributes on ZFS files by using the following syntax:
$ ls -l/c file.1
-rw-r--r--+ 1 root root 206695 Jul 20 14:27 file.1
{A-----im----}
Use the following syntax to remove file immutability:
$ chmod S-ci file.1 $ ls -l/c file.1 -rw-r--r--+ 1 root root 206695 Jul 20 14:27 file.1 {A------m----} $ rm file.1