Beefy Boxes and Bandwidth Generously Provided by pair Networks
P is for Practical
 
PerlMonks  

Any reason to use the Paws module over aws cli commands in perl script?

by nysus (Vicar)
on Oct 21, 2020 at 13:25 UTC ( #11123035=perlquestion: print w/replies, xml ) Need Help??

nysus has asked for the wisdom of the Perl Monks concerning the following question:

What are the arguments for using the Paws module instead of just embedding commands like `aws ec2 run-isntances --image-id ....` into my perl script? I feel dirty just executing command line commands in my perl script and it doesn't feel very professional, but what's the harm, really?

$PM = "Perl Monk's";
$MCF = "Most Clueless Friar Abbot Bishop Pontiff Deacon Curate Priest Vicar";
$nysus = $PM . ' ' . $MCF;
Click here if you love Perl Monks

  • Comment on Any reason to use the Paws module over aws cli commands in perl script?
  • Download Code

Replies are listed 'Best First'.
Re: Any reason to use the Paws module over aws cli commands in perl script?
by choroba (Archbishop) on Oct 21, 2020 at 13:47 UTC
    Once you need to read values from config files or user input, you'll also need to properly quote them for the command line, as they can contain characters as [{};<> ] etc. That's what a module saves you from.

    map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

      Quoting is less of an issue if you use system(LIST).

Re: Any reason to use the Paws module over aws cli commands in perl script?
by haukex (Bishop) on Oct 21, 2020 at 15:10 UTC
    I feel dirty just executing command line commands in my perl script and it doesn't feel very professional

    If you do it right, it's fine* - but backticks are usually not the "right" way to do it: Calling External Commands More Safely

    In this case, see jo37's and my responses to PERL to AWS.

    * Update: To be a little more specific: I personally think it's fine in the case of aws and other complex tools like that, and if you're not doing it in a tight loop where performance is important. For stuff like grep, cat, awk, etc., of course one shouldn't call external commands - afoken made a nice list in this node.

Re: Any reason to use the Paws module over aws cli commands in perl script?
by hippo (Chancellor) on Oct 21, 2020 at 13:41 UTC
    what's the harm, really?

    If your typo is less benign than run-isntances you could be in a whole world of trouble.


    🦛

Re: Any reason to use the Paws module over aws cli commands in perl script?
by Anonymous Monk on Oct 21, 2020 at 17:20 UTC
    Hey ... if there wasn't a very good reason for it, no one would have written and then published it!
      "If the cop shot her, he must have had a good reason for it."
A reply falls below the community's threshold of quality. You may see it by logging in.

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: perlquestion [id://11123035]
Front-paged by Corion
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others romping around the Monastery: (4)
As of 2020-11-30 02:34 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found

    Notices?