# fgrep > Matches patterns in files. > Supports simple patterns and regular expressions. > More information: . - Search for an exact string in a file: `fgrep {{search_string}} {{path/to/file}}` - Search only lines that match entirely in files: `fgrep -x {{path/to/file1}} {{path/to/file2}}` - Count the number of lines that match the given string in a file: `fgrep -c {{search_string}} {{path/to/file}}` - Show the line number in the file along with the line matched: `fgrep -n {{search_string}} {{path/to/file}}` - Display all lines except those that contain the given regular expression: `fgrep -v {{regular_expression}} {{path/to/file}}` - Display filenames whose content matches the regular expression at least once: `fgrep -l {{regular_expression}} {{path/to/file1}} {{path/to/file2}}`