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How to use [[ string =~ regexp ]]?

From: Peter Volkov
Subject: How to use [[ string =~ regexp ]]?
Date: Sun, 21 May 2006 22:13:49 +0400


Please CC my email to answers as I'm not subscribed to the list.

I have problems using =~ operator. I've tried to search for answer, but
failed. I'm using GNU bash, version 3.1.17. Can anybody give me some
examples of usage?

I really do not understand why

$ [[ "string" =~ "[a-z]" ]] && echo something

echo me something. IIUC the regular expression [a-z] matches any single
letter, so how string "string" matches one letter?

Seems that I missed the point, or did I encounter bug?

Thank you for any help,

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