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How to check in a folder all files which doesnt have the specifc string?

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# 1  
Old 10-12-2018
How to check in a folder all files which doesnt have the specifc string?
I have a folder with 100s of dat files, with delimiter "|", in some files they didn't provide this delimiter. how to automatically check those list of files in a folder which doesnt have a delimiter or string this way "|" is it possible?

Thank you very much for the helpful info.
# 2  
Old 10-12-2018
Yes. You can generate a list of file with
Code:
fgrep -L '|' *.dat

This works with the Linux versions, not other UNIX OSes.

You would have gotten a better answer if you gave us your exact Os and the shell you use.
fgrep turns "off" the use of regular expressions. It is the same as grep -F Someone else on UNIX.com is sure to note that fgrep is deprecated, I use it for clarity here.
Last edited by jim mcnamara; 10-12-2018 at 11:47 AM..
# 3  
Old 10-12-2018
How about grep -lv '[|]' *.dat
# 4  
Old 10-12-2018
If this is to be part of a script that will do different things depending on whether or not a pipe is found, you might want to add a -q to the command line when you no longer need to see its active. Your if statement can check the status code.
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