Search for File containing specific text.

Something
Search for a string called redeem reward in all text files located in /home/tom/*.txt directory, use

$ grep "redeem reward" /home/tom/*.txt

Task: Search all subdirectories recursively

You can search for a text string all files under each directory, recursively with -roption:

$ grep -r "redeem reward" /home/tom

Task: Only print filenames

By default, grep command prints the matching lines You can pass -H option to print the filename for each match.

$ grep -H -r “redeem reward” /home/tom

Output:

filename.txt: redeem reward

...To just print the filename use cut command as follows:

$ grep -H vivek /etc/* -R
cut -d: -f1

Output:
filename.txt