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sphinx_doc_src/cmds/exec.rst

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+\section exec exec - execute command in current process
+
+\subsection exec-synopsis Synopsis
+\fish{synopsis}
+exec COMMAND [OPTIONS...]
+\endfish
+
+\subsection exec-description Description
+
+`exec` replaces the currently running shell with a new command. On successful completion, `exec` never returns. `exec` cannot be used inside a pipeline.
+
+
+\subsection exec-example Example
+
+`exec emacs` starts up the emacs text editor, and exits `fish`. When emacs exits, the session will terminate.