I have the following perl issue:

I am running a script that is executed by my regular user. I need to “su” to other users throughout the execution of this script, which will require me to enter some information from the UNIX command line. When I “su”, I am prompted for the password, I enter the password, the password is accepted (& updates to the other user) but the scripts returns to the UNIX prompt rather than continuing with the remainder of the script.

Linux 4.1.2

Perl 5.8.8

What am I doing wrong here? Here is my code sample:

&Chg_User ($other_user);
&Chg_Directory ($dir_location);
…
…
…
## the sub_routines below
sub Chg_User {
   my @chg_args = ("su”,  “$_[0]");
   my $chg_result = system(@chg_args);   # updates to user but returns
+ to the UNIX command prompt
   print ("cOmMaNd LiNe \n");      #never gets here unless I type “exi
+t” at the UNIX command prompt
        if ( $chg_result == -1) {
                print "wrong password: $!\n";
               exit (-1);
        }
}
sub Chg_Directory {
   system (“cd”, “$_[0]”);
}
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