setenv.c
1.4 KB
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/* GNU mailutils - a suite of utilities for electronic mail
Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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, 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "mail.h"
extern char **environ;
int
mail_setenv (int argc, char **argv)
{
if (argc == 1)
{
char **p;
for (p = environ; *p; p++)
printf ("%s\n", *p);
}
else
{
int i;
/* Note: POSIX requires that the argument to putenv become part
of the environment itself, hence the memory allocation. */
for (i = 1; i < argc;)
{
char *p;
if (i+1 < argc && argv[i+1][0] == '=')
{
asprintf (&p, "%s=%s", argv[i], argv[i+2]);
i += 3;
}
else
{
p = argv[i];
i++;
}
putenv (p);
}
}
return 0;
}