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11.7 Shell Pattern Matching

Nowadays portable patterns can use negated character classes like ‘[!-aeiou]’. The older syntax ‘[^-aeiou]’ is supported by some shells but not others; hence portable scripts should never use ‘^’ as the first character of a bracket pattern.

Outside the C locale, patterns like ‘[a-z]’ are problematic since they may match characters that are not lower-case letters.


This document was generated on April 26, 2012 using texi2html 5.0.

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