# Require: command not found

**URL:** <https://www.ruby-forum.com/t/require-command-not-found/128229>\
**Category:** Rails\
**Created:** [February 6, 2008, 1:29am UTC](https://www.ruby-forum.com/t/require-command-not-found/128229 "2008-02-06T01:29:10Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Ruby\_start](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/898d66/32.png) [@Ruby\_start](https://www.ruby-forum.com/u/Ruby_start)\
**Post date:** [February 6, 2008, 1:29am UTC](https://www.ruby-forum.com/t/require-command-not-found/128229/1 "2008-02-06T01:29:10Z")

</div>

I installed Cygwin(linux like system) into my window XP pc, and runs a  
ruby program. It failed returning the error msgs:  
require: command not found.

any librabry i am missing downloaded from Cygwin? or anything else?