The regular expression of the shell

Classification of regular Expressions:

1. Basic Regular Expressions (basic Regular expression also known as basic RegEx abbreviation Bres)

2. Extended Regular Expressions (Extended Regular expression also known as Extended RegEx abbreviation Eres), extended expressions have + 、?、 | and ()

3, Perl Regular expression (Perl Regular expression also called Perl RegEx abbreviation pres)

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example, I can make up one more time.

Reference:

Http://man.linuxde.net/docs/shell_regex.html

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The regular expression of the shell