fgrep

Matches fixed strings in files. Equivalent to grep -F. More information: https://www.gnu.org/software/grep/manual/grep.html.

fgrep search_string path/to/file

fgrep -x search_string path/to/file1 path/to/file2 ...

fgrep -c search_string path/to/file

fgrep -n search_string path/to/file

fgrep -v search_string path/to/file

fgrep -l search_string path/to/file1 path/to/file2 ...