Re^2: Semicolon behaviour in system call

Indeed... but what's the equivalent in a system call?

In any case, the testcase using 'echo' was simply to demonstrate the problem; it reproduces in any variety of ways, e.g.

  cd C:\temp
  perl -e 'system("pwd; pwd");'
[download]

results in

  pwd [-LP] [-d path]
[download]

in other words, a usage error... but *nix/MKS perl produces:

  c:/temp
  c:/temp
[download]

I guess, in summary, what I'm asking is how a multi-command system call is made with standard Windows PERL distribs

Comment on Re^2: Semicolon behaviour in system call Select or Download Code

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Re^3: Semicolon behaviour in system call by ikegami (Patriarch) on Mar 27, 2014 at 19:50 UTC
Indeed... but what's the equivalent in a system call? `system` takes a shell command, so the equivalent of `echo "1 & echo 2 & echo 3" & echo two dos & echo t` [download] using `system` is `system('echo "1 & echo 2 & echo 3" & echo two dos & echo t');` [download] Do you realize you are launching a Windows build of Perl (ActivePerl or Strawberry Perl?), and that Windows build of Perl launch `cmd` rather than (non-existent) `/bin/sh`? In other words, `system('pwd; pwd');` [download] is the same as `system('cmd', '/x', '/c', 'pwd; pwd');` [download] Perhaps you are looking for `# Adjust the path for your system system('c:\\progs\\cygwin\\bin\\sh', '-c', 'pwd; pwd');` [download]	[reply] [d/l] [select]
Re^4: Semicolon behaviour in system call by casual_prgmr (Initiate) on Mar 28, 2014 at 18:16 UTC
Thank you very much indeed for your analysis, and your code samples, and for the overall illumination provided	[reply]
Re^3: Semicolon behaviour in system call by kcott (Archbishop) on Mar 27, 2014 at 19:33 UTC
Do you get the same output from `C:\temp> pwd; pwd` [download] as you do from `C:\temp> perl -e 'system("pwd; pwd");'` [download] Do the same check for: `C:\temp> echo 1; echo 2; echo 3` [download] From Perl, you may need to put each command in an array and use "`system $_ for @cmds`", e.g. `$ perl -e 'my @cmds = ("echo 1", "echo 2", "echo 3", "pwd", "pwd"); sy +stem $_ for @cmds' 1 2 3 /Users/ken/tmp /Users/ken/tmp` [download] [I don't have Perl running on any MSWin platform, so I can't test this for you.] -- Ken	[reply] [d/l] [select]
Re^4: Semicolon behaviour in system call by casual_prgmr (Initiate) on Mar 28, 2014 at 17:34 UTC
Hi Ken, thanks for that nice option, it doesn't quite work from the command line (issues identifying the closing "'"), but from a script it does the trick regardless of PERL distrib used	[reply]
Re^5: Semicolon behaviour in system call by ikegami (Patriarch) on Mar 28, 2014 at 17:42 UTC
Yes and no. "`;`" vs "`&`" is hardly the only difference between `sh` and `cmd`. Even the quotes are different.	[reply] [d/l] [select]