I am working on a library module to replace an aging shell script. It (among a few other things) reads in a variety of FTP commands from a file and then performs the given FTP transaction. The system in question doesn't have Net::FTP, so that won't work much as I would prefer using that. My module will read in the config files, set up a hash with all the relevant information and return it upon request. The problem I am having is that the FTP commands in the file include variables which are set in the module. In my calling program, I call various methods in the module, print the relevant FTP transaction to a file and then call FTP passing in that file. Easy enough usually. I have a few lines of code like so: 
      while (my $command = $ftpgizmo->next_ftp_command )
      {
         print OUT "${command}\n";
      }

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Now $command is going to be a string like: 
cd $FTPPath
or
type ${TransferMode}

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This is exactly what prints out though. How would I go about making sure that these variables are interpolated so that it prints out 
cd /my/ftp/path
or
type ASCII

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Currently, in the next_ftp_command, I define and set these variables before returning the given string, but this doesn't work.
Thanks,
Doug

In reply to Interpolating strings within strings by Darby

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