ctags — Generate an index (or tag) file of language objects found in source files for many popular programmi

Generate tags for a single file and output them to a file named "tags" in the current directory, overwriting the file if it exists

ctags {{path/to/file}}

Generate tags for all files in the current directory and output them to a specific file, overwriting the file if it exists

ctags -f {{path/to/file}} *

Generate tags for all files in the current directory and all subdirectories

ctags --recurse

Generate tags for a single file and output them with start line number and end line number in JSON format

ctags --fields=+ne --output-format=json {{path/to/file}}