New Perl Question

coco06

Hi

I am trying to open a command prompt inside my perl script and run a command. It is not recognising the two variables as i think the syntax i am using is wrong. Can anybody shed any light on this? Thanks.


$printLocn = "\\\\server\\printername" ;

my $cmd = 'perl -pi -e -d copy $file $printLocn'; (think this is wrong?)
runCMDCommand();

sub runCMDCommand {

my @output = `$cmd`;
print("CMD:$cmd\n");
}

Creamy Goodness

You need to use "" double quotes so that the variables on line 3 get substituted the actual variable value.

Using '' single quotes causes perl to see $var as just that $var

Also your sub routine does not know of the variable $cmd as it is not passed to the routine although perl may let you away with this if you omit the use strict pragma

Burial

You need to use " instead of ' when using variables. Your program just reads it as what its written as.

So lets say, $Variable = 5;

1.) print("$Variable");

2.) print('$Variable');

Output:

1.) 5

2.) $Variable

I hope that helps.

coco06

Hey

Once i looked at it with a clear head again this morning i realized i can just use the copy function in the script itself and dont need to open command prompt window...

Thanks

daymobrew

coco06 wrote: »

Once i looked at it with a clear head again this morning i realized i can just use the copy function in the script itself and dont need to open command prompt window...

Do you mean use the File::Copy module?

I always encourage the use of native functions over command prompt and other external tools. Native functions will be more portable.

coco06

daymobrew wrote: »

Do you mean use the File::Copy module?

I always encourage the use of native functions over command prompt and other external tools. Native functions will be more portable.

Yes the file::copy module. Just took me a little time to get the brain working..