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Originally Posted by brewbuck
To search a single file for an instance of a string "foo":
Code:
grep foo <filename>
To recursively search all files under a particular directory for a string "foo", and display the names of files which contain that string:
Code:
grep -Hrl foo <dir>
this command is really amazing. can you tell me what does -H options with grep.
I could understand the usage of r and l option ... r used for recursive search and l used for display list of file which contains patter foo
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