exec - execute command in current process
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Synopsis
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.. synopsis::

    exec COMMAND

Description
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.. only:: builder_man

          NOTE: This page documents the fish builtin ``exec``.
          To see the documentation on any non-fish versions, use ``command man exec``.

``exec`` replaces the currently running shell with a new command. On successful completion, ``exec`` never returns. ``exec`` cannot be used inside a pipeline.

The **--help** or **-h** option displays help about using this command.

Example
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``exec emacs`` starts up the emacs text editor, and exits ``fish``. When emacs exits, the session will terminate.
