Download M4 Source Macro History Category Index

ac_check_user

Synopsis

AC_CHECK_USER

Description

Check if the specified UNIX user exists, if yes set your environment variable to that username else unset your environment variable

Example:

    AC_CHECK_USER(USER, [gleensalmon])
    if test x$USER = xgleensalmon; then
        bla..bla..bla..
    else
        bla..bla..bla..
    fi

Besides checking existence, this macro also set these environment variables upon completion:

    USER_HOME = home directory of user, written in /etc/passwd

Author

Gleen Salmon <gleensalmon@yahoo.com>

Last Modified

2002-04-11

M4 Source Code

AC_DEFUN([AC_CHECK_USER],[
AC_MSG_CHECKING([for user $2])
if grep ^$2: /etc/passwd > /dev/null; then
        $1=$2
        USER_HOME=`grep ^$2: /etc/passwd | sed "s/^\([[^:]]*:\)\{5\}\([[^:]]*\):[[^:]]*$/\2/"`
        AC_MSG_RESULT([yes])
else
        unset $1
        unset USER_HOME
        AC_MSG_RESULT([no])
fi;dnl
])

License

Copyright © 2002 Gleen Salmon <gleensalmon@yahoo.com>

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 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.

As a special exception, the respective Autoconf Macro's copyright owner gives unlimited permission to copy, distribute and modify the configure scripts that are the output of Autoconf when processing the Macro. You need not follow the terms of the GNU General Public License when using or distributing such scripts, even though portions of the text of the Macro appear in them. The GNU General Public License (GPL) does govern all other use of the material that constitutes the Autoconf Macro.

This special exception to the GPL applies to versions of the Autoconf Macro released by the Autoconf Macro Archive. When you make and distribute a modified version of the Autoconf Macro, you may extend this special exception to the GPL to apply to your modified version as well.