UNIX Guide, for beginners and Mac OS X users
You are here: SillyDog701 > UNIX Guide >SillyDog701 > UNIX Guide > (index) supportSupport - ask in our friendly forums.

Removing duplicate lines with uniq

To remove duplicate lines from a file use the command:

   uniq in_file out_file

uniq searches the in_file for consecutive duplicate lines - a line that is immediately followed by one or more lines that are identical to it - and removes them. The result is an out_file that contains no duplicate lines.

Use the sort command if you want to remove duplicate lines that occur in different parts of a file.


[Home]UNIX Guide home | [Search]search | index
Page URL: http://sillydog.org/unix/
[SillyDog701] [Netscape] [MozInfo701] [MacCentre701] [UNIX Guide] [AntTunes701][Forums] [Search] [Change Log] [Feedback] [About Us] [Sitemap]
This UNIX Guide maintained by SillyDog701, portion of this Guide is based on UNIXhelp. UNIXhelp is copyright University of Edinburgh. This page was last modified on 14 March, 2006
Netscape NOW!Made on a Mac
support MozInfo701 and SillyDog701