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Full Discussion: awk with arguments
Top Forums Shell Programming and Scripting awk with arguments Post 302380138 by aoussenko on Monday 14th of December 2009 10:52:43 AM
Old 12-14-2009
awk with arguments
Hi
I have a file which looks like this:

$ cat my_file
f1acc: 1398
f1pdb: 495
f1trn: 1288
f1txn: 7326
t1trn: 8241
t1txn: 8292
p080$

I am trying to "egrep" a certain pattern from this file and put a value of a variable in front of each line, for example:

pnum=555
cat my_file | egrep 'pdb|acc' | nawk -v v=$pnum '{print $v FS $1 FS $2}'

I hoped the output would be as follows:
555 f1acc: 1398
555 f1pdb: 495

But the actual output from the above command is

p080$ cat my_file | egrep 'pdb|acc' | nawk -v v=$pnum '{print $v FS $1 FS $2}'
f1acc: f1acc: 1398
f1pdb: f1pdb: 495

Please help. Thanks a lot -A
 

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LEARN ABOUT NETBSD

zgrep

ZGREP(1)						    BSD General Commands Manual 						  ZGREP(1)

NAME

     zgrep, zegrep, zfgrep -- print lines matching a pattern in gzip-compressed files

SYNOPSIS

     zgrep [grep-flags] [--] pattern [files ...]

     zegrep [grep-flags] [--] pattern [file ...]

     zfgrep [grep-flags] [--] pattern [file ...]

DESCRIPTION

     zgrep runs grep(1) on files or stdin, if no files argument is given, after decompressing them with zcat(1).

     The grep-flags and pattern arguments are passed on to grep(1).  If an -e flag is found in the grep-flags, zgrep will not look for a pattern
     argument.

     zegrep calls egrep(1), while zfgrep calls fgrep(1).

EXIT STATUS

     In case of missing arguments or missing pattern, 1 will be returned, otherwise 0.

SEE ALSO

     egrep(1), fgrep(1), grep(1), gzip(1), zcat(1)

AUTHORS

     Thomas Klausner <wiz@NetBSD.org>

BSD
								 December 28, 2003							       BSD
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