Data extraction to same file name

[new2unix]

Hi Everyone,

I need advice on how to extract data from a file named, err_msg.log. This file contain different type of error msg with corresponding header. Basically, I need to skip any line in this file containing the following string, "ID ERROR" and output other lines that do not have this string. The other catch here is the output file name will be the same as the source file name, "err_msg.log". Is it possible?

Thanks

Mike

 

[crowe]

you can skip any lines with "ID ERROR" by using:

grep -v "ID ERROR" err_msg.log

this will go to stnd out, however you can not redirect to the exact same filename.

grep -v "ID ERROR" err_msg.log > err_msg.log (WILL NOT WORK)

you need to go to a tmp file, and then move the contents back to the origional file.

crowe

 

[new2unix]

Thanks Crowe!