Re: shell equivalent to text 1 thru -9?
Re: shell equivalent to text 1 thru -9?
- Subject: Re: shell equivalent to text 1 thru -9?
- From: Chris Janton <email@hidden>
- Date: Tue, 19 Apr 2005 06:40:30 -0700
The shell can't easily do string extraction by position, but it can
certainly do it by matching and removing a known prefix or suffix.
x="nameOfSomeApp_log.txt"
Sure it can (bash in this example) it just needs to be specified
properly.
To get the length of a string - ${#x}
To get everything but the last 8 characters - ${x: 0: ${#x}-8}
That's STRING : offset : number of characters
You can read about it in the bash manual page (man bash). The
example/description will confound you until you find out that its is
better to put blanks in front of the parameters...I found this web page
to be helpful
http://ca.lxer.org/LDP/LDP/abs/html/string-manipulation.html
8)
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Chris Janton - face at CentosPrime dot COM
Netminder for Opus1.COM
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