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Shell Programming and Scripting
Extract a string from file
Post 302374844 by shehzad_m on Wednesday 25th of November 2009 02:58:24 PM
11-25-2009
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=====================================
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Hi, guys. I have one question:
I need to search for a string in a file, and then extract another string from the file and assign it to a variable.
For example:
the contents of the file (group) is below:
...
ftp:x:23:
mail:x:34
...
testing:x:2001
sales:x:2002
development:x:2003
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LEARN ABOUT DEBIAN
extractor
EXTRACTOR(1) The Canonical Csound Reference EXTRACTOR(1) NAME
extractor - Extract a section of audio from an audio file. . DESCRIPTION
Extract a section of audio, by time or sample, from an existing sound file. SYNTAX
extractor [OPTIONS ... ] infile INITIALIZATION
Flags: o -S integer = Start the extract at the given sample number. o -Z integer = End the extract at the given sample number. o - Q integer = Extract given number of samples. o -T fpnum = Start the extract at the given time in seconds. o -E fpnum = End the extract at the given time in seconds. o -D fpnum = Extract given time in seconds. o -v = Verbose mode. o -R = Continually rewrite the header while writing soundfile (WAV/AIFF). o -H integer = Show a "heart-beat" to indicate progress, in style 1, 2 or 3. o -N = Alert call (usually ringing the bell) when finished. o -v = Verbose mode. o -o fname = output file name (default: test.wav) EXAMPLES
The default values are extractor -S 0 -Z end-of-file -otest For example extractor -S 10234 -D 2.13 in.aiff -o out.wav This creates a new sound file taken from sample 10234 and lasting 2.13 seconds. CREDITS
Author: John ffitch 1994 AUTHORS
Barry Vercoe MIT Media Lab Author. Dan Ellis MIT Media Lab, Cambridge Massachussetts Author. COPYRIGHT
5.10 08/01/2011 EXTRACTOR(1)