mknod: be more vocal about danger of running tests as root

[gnulib.git] / build-aux / mdate-sh

diff --git a/build-aux/mdate-sh b/build-aux/mdate-sh
index 4b2efdf..c477512 100755 (executable)
--- a/build-aux/mdate-sh
+++ b/build-aux/mdate-sh
@@ -1,10 +1,10 @@
 #!/bin/sh
 # Get modification time of a file or directory and pretty-print it.
 
-scriptversion=2005-02-07.09
+scriptversion=2010-02-22.21; # UTC
 
-# Copyright (C) 1995, 1996, 1997, 2003, 2004, 2005 Free Software
-# Foundation, Inc.
+# Copyright (C) 1995, 1996, 1997, 2003, 2004, 2005, 2007, 2009, 2010
+# Free Software Foundation, Inc.
 # written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, June 1995
 #
 # This program is free software; you can redistribute it and/or modify
@@ -18,8 +18,7 @@ scriptversion=2005-02-07.09
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 # As a special exception to the GNU General Public License, if you
 # distribute this file as part of a program that contains a
@@ -39,7 +38,8 @@ case $1 in
     cat <<\EOF
 Usage: mdate-sh [--help] [--version] FILE
 
-Pretty-print the modification time of FILE.
+Pretty-print the modification day of FILE, in the format:
+1 January 1970
 
 Report bugs to <bug-automake@gnu.org>.
 EOF
@@ -59,7 +59,15 @@ export LC_ALL
 LC_TIME=C
 export LC_TIME
 
-save_arg1="$1"
+# GNU ls changes its time format in response to the TIME_STYLE
+# variable.  Since we cannot assume `unset' works, revert this
+# variable to its documented default.
+if test "${TIME_STYLE+set}" = set; then
+  TIME_STYLE=posix-long-iso
+  export TIME_STYLE
+fi
+
+save_arg1=$1
 
 # Find out how to get the extended ls output of a file or directory.
 if ls -L /dev/null 1>/dev/null 2>&1; then
@@ -67,6 +75,10 @@ if ls -L /dev/null 1>/dev/null 2>&1; then
 else
   ls_command='ls -l -d'
 fi
+# Avoid user/group names that might have spaces, when possible.
+if ls -n /dev/null 1>/dev/null 2>&1; then
+  ls_command="$ls_command -n"
+fi
 
 # A `ls -l' line looks as follows on OS/2.
 #  drwxrwx---        0 Aug 11  2001 foo
@@ -81,7 +93,7 @@ fi
 # words should be skipped to get the date.
 
 # On HPUX /bin/sh, "set" interprets "-rw-r--r--" as options, so the "x" below.
-set x`ls -l -d /`
+set x`$ls_command /`
 
 # Find which argument is the month.
 month=
@@ -189,5 +201,6 @@ echo $day $month $year
 # eval: (add-hook 'write-file-hooks 'time-stamp)
 # time-stamp-start: "scriptversion="
 # time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-end: "$"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
 # End: