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Full Discussion: grep + awk
Top Forums Shell Programming and Scripting grep + awk Post 302156028 by kamel.seg on Monday 7th of January 2008 04:41:09 AM
Old 01-07-2008
grep + awk

hi,

i want to replace $3 in file by $var i have used this line of command :

awk '!$3{$3=v}1' OFS="," FS="," v="$var" $file1> $file2

but i want just to replace it in specific line where when i found $string

i used this command :

grep $string $file1 | awk '!$3{$3=v}1' OFS="," FS="," v="$var" $file1> $file2


but i have the $3 changed in all the file1

any help please.

thanks
 

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XZDIFF(1)							     XZ Utils								 XZDIFF(1)

NAME
xzcmp, xzdiff, lzcmp, lzdiff - compare compressed files SYNOPSIS
xzcmp [cmp_options] file1 [file2] xzdiff [diff_options] file1 [file2] lzcmp [cmp_options] file1 [file2] lzdiff [diff_options] file1 [file2] DESCRIPTION
xzcmp and xdiff invoke cmp(1) or diff(1) on files compressed with xz(1), lzma(1), gzip(1), or bzip2(1). All options specified are passed directly to cmp or diff. If only one file is specified, then the files compared are file1 (which must have a suffix of a supported com- pression format) and file1 from which the compression format suffix has been stripped. If two files are specified, then they are uncom- pressed if necessary and fed to cmp(1) or diff(1). The exit status from cmp or diff is preserved. The names lzcmp and lzdiff are provided for backward compatibility with LZMA Utils. SEE ALSO
cmp(1), diff(1), xz(1), gzip(1), bzip2(1), zdiff(1) BUGS
Messages from the cmp(1) or diff(1) programs refer to temporary filenames instead of those specified. Tukaani 2009-07-05 XZDIFF(1)
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