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Shell Programming and Scripting

A basic question of regex

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Top Forums Shell Programming and Scripting A basic question of regex
# 8  
Old 08-18-2014
Quote:
Originally Posted by protocomm
The dot work as dot in grep or sed or awk
A basic bourne shell doesn't understand regexes, only globs. There are no modifiers like * or +. only ranges [A-Z], and any single-character-match ?. Also, the glob must always match the entire filename, not just part of it as you would in a regex.

BASH does have regexes, but as an extension, not directly.
This User Gave Thanks to Corona688 For This Post:
protocomm
# 9  
Old 08-18-2014
If you want file names starting with x that have two or more letters you need:

Code:
$ cat x?* > file
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