Wietse:
> Open a shell as root, then execute these commands:
> # su nobody
> $ /usr/bin/perl /usr/libexec/postfix/greylist.pl
Pratchaya Rudjanisoragun:
> #su nobody
> This account is currently not available.
Save the script below as "su.pl" then execute:
perl su.pl /usr/bin/perl /usr/libexec/postfix/greylist.pl
Wietse
Begin script
#!/usr/bin/perl
die "nobody: not found\n" unless ($n, $p, $uid, $gid, $q, $c, $g, $d,
$s) = getpwnam("nobody");
die "cannot set effective gid to $gid: $!\n" unless ($) = "$gid $gid");
die "cannot set real gid to $gid: $!\n" unless ($( = "$gid $gid");
die "cannot set uid to $uid: $!\n" unless ($> = $< = $uid);
exec(@ARGV) || die "exec $ARGV[0]: $!\n";
End script
