We no longer have two doc systems, move sphinx_doc_src back to doc_src

doc_src/cmds/command.rst

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+.. _cmd-command:
+
+command - run a program
+=======================
+
+Synopsis
+--------
+
+::
+
+    command [OPTIONS] COMMANDNAME [ARGS...]
+
+Description
+-----------
+
+``command`` forces the shell to execute the program ``COMMANDNAME`` and ignore any functions or builtins with the same name.
+
+The following options are available:
+
+- ``-a`` or ``--all`` returns all the external COMMANDNAMEs that are found in ``$PATH`` in the order they are found.
+
+- ``-q`` or ``--quiet``, silences the output and prints nothing, setting only the exit status. Implies ``--search``.
+
+- ``-s`` or ``--search`` returns the name of the external command that would be executed, or nothing if no file with the specified name could be found in the ``$PATH``.
+
+With the ``-s`` option, ``command`` treats every argument as a separate command to look up and sets the exit status to 0 if any of the specified commands were found, or 1 if no commands could be found. Additionally passing a ``-q`` or ``--quiet`` option prevents any paths from being printed, like ``type -q``, for testing only the exit status.
+
+For basic compatibility with POSIX ``command``, the ``-v`` flag is recognized as an alias for ``-s``.
+
+Examples
+--------
+
+``command ls`` causes fish to execute the ``ls`` program, even if an ``ls`` function exists.
+
+``command -s ls`` returns the path to the ``ls`` program.
+
+``command -q git; and command git log`` runs ``git log`` only if ``git`` exists.