in reply to Re^2: Executing perl program from another perl program and capturing the output
in thread Executing perl program from another perl program and capturing the output

If ... if ... Capture::Tiny. If ... then Win32::ShellQuote ...

Just unnecessary! (Ie. A waste of time and effort.)

If the shell (cmd.exe) requires quotes ...:

C:\test>"c:\Program Files\Direct Modeling Express 4.0\binx64\7za.exe" 
+a -y c:\junk.rar "c:\Program Files\Hitman Pro 3.5\*"

7-Zip (A) 4.42  Copyright (c) 1999-2006 Igor Pavlov  2006-05-14
Scanning

Creating archive c:\junk.rar

Compressing  HitmanPro35_x64.exe

Everything is Ok

[download]

Then invoking the same command via the shell, via backticks also requires, (and will work with) quotes ... (but use / instead of \ for paths!)

[0] Perl> $output = `\"c:/Program Files/Direct Modeling Express 4.0/bi
+nx64/7za.exe\" a -y c:/junk.rar \"c:/Program Files/Hitman Pro 3.5/*\"
+`;;
[0] Perl> print $output;;

7-Zip (A) 4.42  Copyright (c) 1999-2006 Igor Pavlov  2006-05-14

Scanning

Updating archive c:/junk.rar

Compressing  HitmanPro35_x64.exe

Everything is Ok

[download]

And that's *all* that is required. No ifs; no buts; learn the rules, and it just works.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

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Re^4: Executing perl program from another perl program and capturing the output
by Anonymous Monk on Nov 25, 2014 at 04:34 UTC

    And that's *all* that is required. No ifs; no buts; learn the rules, and it just works.

    Yeah, I stick to learning perl quoting rules, and then don't worry about cmd.exe quoting rules too much

[reply]
      I stick to learning perl quoting rules,

      That's all I'm asking you to do.

      If the backticks command needs double quotes, then you need to precede them with a backslash. That's standard "perl quoting rules".

      Of course, knowing that the command needs double quotes on Windows (rather than single quotes on *nix), requires an open mind and a desire to understand.

      Trying to apply standard English grammar or pronunciation rules to French (or Dutch or German or Russian) ... is pointless.

      Equally, trying to "speak *nix" to Windows, is like the archetypal Englishman, speaking English, S-L-O-W-L-Y A-N-D L-O-U-D-L-Y, to "dear 'ol johnny foreigner", regardless of his nationality.

      With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
      Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
      "Science is about questioning the status quo. Questioning authority".
      In the absence of evidence, opinion is indistinguishable from prejudice.
[reply]

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