Shell Programming and Scripting

Hi

I have this below script...I want to execute the shell command "rm" in the below script
but it is not working. Can anybody why so?

I got the below error

rm: /users/amvarma is a directory
sh: /*-log*: not found


-------------------

$u=`whoami`;
print "$u\n";
$op_1=$ARGV[0]; # for platform , c3750,c356..etc
$op_2=$ARGV[1]; # for crypto
$op_3=$ARGV[2]; # for build option production or devonly

lc($op_1);
lc($op_2);
lc($op_3);

chomp($options);
print "option-1= $op_1\n";
print "option-2= $op_2\n";
print "option-3= $op_3\n";

$s="*-log*";

if ( $op_1 eq "all" )
{
print "clearing old buildlogs in /users/$u & images in /tftpboot/$u to
avoid failure due to space\n";

system("rm -f /users/$u/$s");
#system("rm -f /tftpboot/$u/*.*");
print "clearing ...done\n"
}

Thx

Amit