Shell Programming and Scripting

Use /usr/xpg4/bin/awk instead for Solaris or SunOS

Code:

/usr/xpg4/bin/awk 'NR==FNR{ a[$0]=1;next } {n=0; for(i in a) { if($0~i) { print $0 >> i".txt" }}}' stringsfile.txt $file

Sorry to play message tag with you... I'm on a MAC, obviously using OSX. I read that creating awk files would be best and using BEGIN and END seem to be pertinent. However, awk is very confusing to me and I'm not sure where to go with this one.

"/usr/xpg4/bin/awk" is a bad interpretor.

I'm not sure about OSX.

I tested this code in following systems and it works fine

The trouble is with:

Code:

{ print $0 >> i".txt" }

Try:

Code:

{ f=i ".txt"; print>f }

That's awesome. I had some things on my end to fix. But finally got it working, thanks to y'all. I appreciate the help.

While it finally works, I'd still like to know what I'm typing, which most of it makes sense. But why wouldn't this work:

Code:

{ print $0 >> i".txt" }

But this did:

Code:

{ f=i ".txt"; print>f }

A quick explanation would suffice, if anything. I'm just making sure the coding sticks, I would hate to ask the same question twice.

Thanks again!

-David

I think for some awks it is ambiguous what is the target of the redirection. To remove this ambiguity, you could either assign the composition of the filename to a variable first, like I suggested, or use brackets:

Code:

{ print > ( i ".txt" ) }

Scrutinizer,

This code was given to me in this thread. I'm now going through some modifications to make this logic work with other files. Would you be able to take me through the code, piece by piece, so I can understand how to modify/create code for different things using awk.

Code:

awk 'NR==FNR{ a[$0]=1;next } { n=0; for(i in a) { if($0~i) { f=i ".txt"; print>f }}}' infile $file

I tried using code with a file that contains a list of things to search for. As I'm running it, it states the following for one file to be created:

awk: XYZ.txt makes too many open files
input record number 4845, file XXXXXX.files
source line number 1

xyz.txt is the file being created
XXXXX.files is the files being looked at

Source line 1 of the script looks like this

Code:

for file in /directory/*.files

This works with the original file I used for terms to search for, but when using a different one, with a longer list, I get those errors and almost empty created files.

Any help is appreciated. My real goal is to understand the code and be able to modify it myself if needed.

Thanks a bunch!

-David