tldr/pages/common/ctags.md

# ctags

> Generates an index (or tag) file of language objects found in source files for many popular programming languages.
> More information: <https://ctags.io/>.

- 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}}`