What command can you use to quickly find which file on your home folder containing the umask command?

Question

What command can you use to quickly find which file on your home folder containing the umask command?

$ grep -rnw "umask" ~

Answer 1

The pattern in grep is placed in front of the file/path:

grep [OPTIONS] PATTERN [FILE...]

To receive just the matching filenames instead of the matches, you should use -l option:

grep -rlw "umask" ~

If you want all matches of all files including their line number, you need to use -n instead of -l:

grep -rnw "umask" ~