Shell Tricks: Extract text between two regexes

To extract text between two regular expressions, use sed -n '/first_regex/second_regex/p'. For instance, to ad-hoc extract the function definition of the test tsync_override_log_subdomains_off, use: sed -n '/TEST_F(audit, tsync_override_log_subdomains_off)/,/^}/p' \ tools/testing/selftests/landlock/audit_test.c This assumes that the function ends with a single } on an individual line. But that tends to be a given. awk offers similar features. This invocation finds the definitions of static functions with report_fixup in their names, and prefixes these findings with the filenames: awk '/^static.*report_fixup/,/^}/ { print FILENAME, $0; }' *.c But well, awk is awkward.