AIX Tip of the Week

Subject: Is There an AIX "unerase" Command?

Audience: Administrators

Date: April 26, 2004

Unfortunately, there is no "unerase" command in Unix. The best alternative is to restore from a backup (You are making backups, aren't you?).

As a last resort, you can try a data recovery tool, such as the one at

(For others, search the web for "aix data recovery".) However, don't depend on these tools to recover data. None guarantee success. It's "hit or miss".

A better strategy is prevention. My suggestions are

  1. Never work as root for non administration tasks. Work as a regular user id
  2. Alias the "rm" command as "rm -i".
  3. Copy files before editing
  4. Make regular backups

Bruce Spencer,

April 26, 2004