Re: $^O empty in windows powershell -- portableshell.bat ?

Hello WithABeard and welcome to the monastery and to the wonderful world of Perl!,

interesting finding, I tried it and.. more doubts coming out

PS C:\Users\me> Get-Host | Select-Object Version

Version
-------
5.1.19041.1682


PS C:\Users\me> C:\EX_D\ulisseDUE\perl5.24.64bit\perl\bin\perl.exe -e 
+"print $^O;"
PS C:\Users\me>                                                       
+              # no output as you noticed

PS C:\Users\me> C:\EX_D\ulisseDUE\perl5.24.64bit\perl\bin\perl.exe -e 
+'print $^O;'
MSWin32                                                               
+              # ok with single quotes.. meh
[download]

But what happens if I cast portableshell.bat coming within my portable strawberry perl?

PS C:\Users\me> C:\EX_D\ulisseDUE\perl5.24.64bit\portableshell.bat
----------------------------------------------
 Welcome to Strawberry Perl Portable Edition!
 * URL - http://www.strawberryperl.com/
 * see README.TXT for more info
----------------------------------------------
Perl executable: C:\EX_D\ulisseDUE\perl5.24.64bit\perl\bin\perl.exe
Perl version   : 5.24.2 / MSWin32-x64-multi-thread

C:\Users\me>perl -e "print $^O;"
MSWin32                                                              #
+ good 'ol expected behaviour
C:\Users\me>
C:\Users\me>
C:\Users\me>perl -e 'print $^O;'
Can't find string terminator "'" anywhere before EOF at -e line 1.   #
+ no more single quote allowed
[download]

More: the powershell console is no more a powershell console! Get-Host gives me command not found

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Re^2: $^O empty in windows powershell -- portableshell.bat ? by LanX (Saint) on Nov 22, 2022 at 09:20 UTC
you have to distinguish between console/terminal-window and a shell running within°, and you can run multiple shells nested within each other.² in your case portableshell.bat starts a fresh cmd° shell as a sub-process inside the current terminal window, after typing `exit` you'll be back to the outer powershell. compare `C:\tmp> C:\tmp>cmd # new sub shell Microsoft Windows [Version 10.0.19044.2251] (c) Microsoft Corporation. Alle Rechte vorbehalten. C:\tmp>exit # leave sub shell C:\tmp>` [download] vs `C:\tmp>start cmd # new window with su +b shell C:\tmp>` [download] Cheers Rolf _{(addicted to the 𐍀𐌴𐍂𐌻 Programming Language :) Wikisyntax for the Monastery} °) that's mostly *nix speak, not sure how they call these on win ²) the motivation for the name "shell" is a surrounding process managing an environment for sub-processes	[reply] [d/l] [select]
Re^2: $^O empty in windows powershell -- portableshell.bat ? by WithABeard (Sexton) on Nov 22, 2022 at 14:31 UTC
Thanks! ^^ Didn't know about the portableshell, it works fine :) I'll keep that handy.	[reply]


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