Using grep for finding some text in group of files can be sometimes complex specially when u have a directory with multiple hierarchy .. currently while looking for some simple option i found this command :
"find . |xargs grep "your_txt""
if you want to find the text in only .C files then also its simple use command:
"find ./ -name "*.C" |xargs grep "your_txt""
such use of find and grep together with xargs can make life simple many times.
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