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Full Discussion: File pattern changing
Top Forums Shell Programming and Scripting File pattern changing Post 302715521 by sathyaonnuix on Tuesday 16th of October 2012 03:42:53 AM
Old 10-16-2012
Thanks Knight, I will check it.

@Saud Pasha: I should have to specify my file name in the find, isn't it ?

find . -name "filename" -type f | xargs perl -p -i -e "s/pattern search string
/replace string /g"

also not only that, I have to find out a pattern "sathya" and only after that I have to replace the value of its 3rd column.

---------- Post updated 10-16-12 at 02:00 AM ---------- Previous update was 10-15-12 at 03:41 AM ----------

Thanks Knight , it works Smilie

---------- Post updated at 02:42 AM ---------- Previous update was at 02:00 AM ----------

Why the below is not working ?

My file is
Code:
>> cat test.txt
sathya yuiop New
ramesh sdgh 456
santhosh sdghsdf 789

I just want to try how this works with the awk as said by itkamaraj.

Code:
#!/bin/sh

var1=sathya
pwd=New
npwd=S@thya01


echo $pwd $npwd | awk -v var=$var1 '/var.*$1/{gsub("$1","$2")}1' test.txt > temp.txt
cat temp.txt > test.txt
rm temp.txt

After executing the above, my file contents remains the same.

But if I execute the awk statement without variables, it works as expected.
Please advise me on what am i missing.
 

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IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME
igawk - gawk with include files SYNOPSIS
igawk [ all gawk options ] -f program-file [ -- ] file ... igawk [ all gawk options ] [ -- ] program-text file ... DESCRIPTION
Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1). AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like @include getopt.awk in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path. OPTIONS
See gawk(1) for a full description of the AWK language and the options that gawk supports. EXAMPLES
cat << EOF > test.awk @include getopt.awk BEGIN { while (getopt(ARGC, ARGV, "am:q") != -1) ... } EOF igawk -f test.awk SEE ALSO
gawk(1) Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995. AUTHOR
Arnold Robbins (arnold@skeeve.com). Free Software Foundation Nov 3 1999 IGAWK(1)
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