New program: arch

* NEWS: Mention arch.
* README: Add arch to the list of programs.
* AUTHORS: Add arch.
* src/uname.c: Include "uname.h".
(PROGRAM_NAME): Handle arch, too.
(ARCH_AUTHORS): Define.
(uname_long_options, arch_long_options): Renamed and new globals.
(usage): Handle arch-mode as well as uname-mode.
(decode_switches): New function, extracted from main,
to handle arch-mode as well as uname-mode.
(main): Handle both modes.
* src/uname-arch.c: New program, alias for "uname -m".
* src/uname-uname.c: New file, default uname mode.
* src/uname.h: New file, uname modes.
* src/Makefile.am (EXTRA_PROGRAMS): Add arch.
(uname_SOURCES, arch_SOURCES): Define.
* man/arch.x: New file.
* man/Makefile.am (dist_man_MANS): Add arch.1.
(arch.1): New dependency.
* tests/misc/arch: New test, compare "arch" with "uname -m"
* configure.ac (OPTIONAL_BIN_PROGS): Add arch.
(MAN): Add arch.1.
* .x-sc_require_config_h: Exempt uname-arch.c and uname-uname.c
from the always-include-<config.h> rule.

Signed-off-by: Karel Zak <kzak@redhat.com>
Signed-off-by: Jim Meyering <jim@meyering.net>

1 files changed, 23 insertions, 0 deletions

diff --git a/doc/coreutils.texi b/doc/coreutils.texi
index 4687defbe..848fb885f 100644
--- a/doc/coreutils.texi
+++ b/doc/coreutils.texi
@@ -35,6 +35,7 @@
 
 @dircategory Individual utilities
 @direntry
+* arch: (coreutils)arch invocation.             Print machine hardware name.
 * base64: (coreutils)base64 invocation.         Base64 encode/decode data.
 * basename: (coreutils)basename invocation.     Strip directory and suffix.
 * cat: (coreutils)cat invocation.               Concatenate and write files.
@@ -396,6 +397,7 @@ User information
 
 System context
 
+* arch invocation::              Print machine hardware name
 * date invocation::              Print or set system date and time
 * uname invocation::             Print system information
 * hostname invocation::          Print or set system name
@@ -12336,6 +12338,7 @@ This section describes commands that print or change system-wide
 information.
 
 @menu
+* arch invocation::             Print machine hardware name.
 * date invocation::             Print or set system date and time.
 * uname invocation::            Print system information.
 * hostname invocation::         Print or set system name.
@@ -12968,6 +12971,26 @@ date -u -d '1970-01-01 946684800 seconds' +"%Y-%m-%d %T %z"
 @end itemize
 
 
+@node arch invocation
+@section @command{arch}: Print machine hardware name
+
+@pindex arch
+@cindex print machine hardware name
+@cindex system information, printing
+
+@command{arch} prints the machine hardware name,
+and is equivalent to @samp{uname -m}.
+Synopsis:
+
+@example
+arch [@var{option}]
+@end example
+
+The program accepts the @ref{Common options} only.
+
+@exitstatus
+
+
 @node uname invocation
 @section @command{uname}: Print system information