Please always mention your os details it will help us to guide you more, anyways my command in POST#2 works fine for me, I am using bash.
As you can see above I have created a test file and then checked the code and it worked fine for me, you could try following too.
on a Solaris/SunOS system, change awkto /usr/xpg4/bin/awk , /usr/xpg6/bin/awk , or nawk.
Thanks,
R. Singh
Last edited by RavinderSingh13; 06-02-2015 at 09:46 AM..
Reason: Added variable named FILE thanks to clx
hi ravinder,
its works now.
sorry for not mentioning the OS details.
can you please explain what the below syntax does.
Note that the code RavinderSingh13 provided had an "M" not a "W" in the substitution search pattern (as you requested). But, what that awk script does is to find the first occurrence of the longest string in the 1st field ($1) on an input line ending with the two characters "_" and "W" and, if a match was found, replace that string with the contents of the awk variable X. Since X has not been initialized in this script, it defaults to an empty string. Then, whether or not a change was made, print prints the line.
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