our($opt_e,$opt_r,$opt_l,$opt_s,$opt_h,$opt_d,$opt_u, $opt_m, $opt_v, 
+$opt_t,$opt_n);
my $option_spec ="e:r:l:s:u:v:t:hdm:n" ;
my $debug = 0;

unless(&getopts($option_spec,\%opt)) 

.....
.....
.....

print "OPT_V ===> $opt_v \n";
print "OPT_N ===> $opt_n \n";

if(defined $opt_v && $opt_v ne "" ){
                $ENV{ROOT} = $ENV{HOME}."/build_XX/".$opt_v if(defined
+ $opt_n);
                $ENV{ROOT} = $ENV{HOME}."/build_AB/".$opt_v if(defined
+  $opt_n && $opt_n ne "");

}
else{
                $ENV{ROOT} = $ENV{HOME}."/build_XX/" if(defined $opt_n
+);
                $ENV{ROOT} = $ENV{HOME}."/build_AB/" if(defined $opt_n
+ && $opt_n ne "");
}

print " ---- $ENV{ROOT} \n";
print "OPT_V ===> $opt_v \n";
print "OPT_N ===> $opt_n \n";
[download]

PROBLEM I am running my script and issue is with the value of argument $opt_n.

I call my script as $HOME/myfiles -r XX10.0.0.1 -v XX10.0.0.1_1 -n SRV_PROD this produces the output as below:

---- /local/home/mylocation/build_AB/EB10.2.3.3_1

OPT_V ===> EB10.2.3.3_1

OPT_N ===> 1 {This is the value where I expect OPT_N value should be SRV_PROD or anything which I passed on command line

but this always comes as 0 or 1}

How can I get the value of OPT_N as which I passed on command line instead of getting 0 or 1.

Please help on this.