# tlmgr conf

> Manage the TeX Live configuration.
> More information: <https://www.tug.org/texlive/tlmgr.html>.

- Show the current TeX Live configuration:

`tlmgr conf`

- Show the current `texmf`, `tlmgr`, or `updmap` configuration:

`tlmgr conf {{texmf|tlmgr|updmap}}`

- Show only a specific configuration option:

`tlmgr conf {{texmf|tlmgr|updmap}} {{configuration_key}}`

- Set a specific configuration option:

`tlmgr conf {{texmf|tlmgr|updmap}} {{configuration_key}} {{value}}`

- Delete a specific configuration option:

`tlmgr conf {{texmf|tlmgr|updmap}} --delete {{configuration_key}}`

- Disable the execution of system calls via `\write18`:

`tlmgr conf texmf {{shell_escape}} {{0}}`

- Show all additional `texmf` trees:

`tlmgr conf auxtrees show`