Linux Command Directory
This directory of Linux commands is from Linux in a Nutshell, 5th Edition.
Click on any of the 687 commands below to get a description and list of available options. All links in the command summaries point to the online version of the book on Safari Bookshelf.
lastb [options] [username] [ttynumber]
Display a list of recent bad login attempts (from the /var/log/btmp file). Accepts the same option flags and arguments as last.