Find patterns in files using regular expressions. More information: <https://www.gnu.org/software/grep/manual/grep.html>.

• Search for a pattern within a file:
  grep "search_pattern" path/to/file
• Search for an exact string (disables regular expressions):
  grep --fixed-strings "exact_string" path/to/file
• Search for a pattern in all files recursively in a directory, showing line numbers of matches, ignoring binary files:
  grep --recursive --line-number --binary-files=without-match "search_pattern" path/to/directory
• Use extended regular expressions (supports `?`, `+`, `{}`, `()` and `|`), in case-insensitive mode:
  grep --extended-regexp --ignore-case "search_pattern" path/to/file
• Print 3 lines of context around, before, or after each match:
  grep --context|before-context|after-context=3 "search_pattern" path/to/file
• Print file name and line number for each match with color output:
  grep --with-filename --line-number --color=always "search_pattern" path/to/file
• Search for lines matching a pattern, printing only the matched text:
  grep --only-matching "search_pattern" path/to/file
• Search `stdin` for lines that do not match a pattern:
  cat path/to/file | grep --invert-match "search_pattern"

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