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Signed-off-by: Mattias Andrée <maandree@operamail.com>

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+\input texinfo   @c -*-texinfo-*-
+
+@c %**start of header
+@setfilename exec-as.info
+@settitle exec-as
+@afourpaper
+@documentencoding UTF-8
+@documentlanguage en
+@finalout
+@c %**end of header
+
+
+@dircategory Miscellaneous
+@direntry
+* exec-as: (exec-as).               exec with explicit argv[0]
+@end direntry
+
+
+@copying
+Copyright @copyright{} 2015 Mattias Andrée
+
+@quotation
+Permission is granted to copy, distribute and/or modify this document
+under the terms of the GNU Free Documentation License, Version 1.3 or
+any later version published by the Free Software Foundation; with no
+Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
+Texts. A copy of the license is included in the section entitled
+``GNU Free Documentation License''.
+@end quotation
+@end copying
+
+@ifnottex
+@node Top
+@top exec-as -- exec with explicit argv[0]
+@insertcopying
+@end ifnottex
+
+@titlepage
+@title exec-as
+@subtitle exec with explicit @code{argv[0]}
+@author by Mattias Andrée (maandree)
+
+@page
+@vskip 0pt plus 1filll
+@insertcopying
+@page
+@end titlepage
+
+@contents
+
+
+
+@menu
+* Overview::                        Brief overview of @command{exec-as}.
+* Invoking::                        Executing @command{exec-as}.
+* GNU Free Documentation License::  Copying and sharing this manual.
+@end menu
+
+
+
+@node Overview
+@chapter Overview
+@command{exec-as} shall spawn a program and
+lets the user specify a value for @code{argv[0]}
+explicitly.
+
+@command{exec-as} is intended as a shell
+command. It makes no since to use it from most
+programming languages.
+
+Since this is not a builtin function, it cannot
+be used as @command{exec} without arguments to
+set file descriptors.
+
+Because this is not a builtin function, running
+@command{exec-as} would normally do an fork–exec
+rather than just an exec. To just perform an
+exec, you need to use @command{exec} too:
+@code{exec exec-as}
+
+
+
+@node Invoking
+@chapter Invoking
+
+At least two arguments are required. The first
+argument is the file to run. This can either
+be an absolute path, an explicitly relative path,
+or a file in @env{$PATH}. The second argument
+is the name of the process, @code{argv[0]}.
+The following arguments are the rest in of the
+values in @code{argv}, often called the
+command line arguments.
+
+@command{'exec-as bash -bash'} will run the first
+program in @env{$PATH} named @command{bash}, and
+set @code{argv[0]} to @code{-bash} (making it a
+login shell.) You can add addition argument as
+needed.
+
+
+
+@node GNU Free Documentation License
+@appendix GNU Free Documentation License
+@include fdl.texinfo
+
+@bye
+