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syntax for Cygwin bash invoking Win apps
- From: "Ziser, Jesse" <xezlec at yahoo dot com>
- To: cygwin at cygwin dot com
- Date: Tue, 8 Sep 2009 20:30:13 -0700 (PDT)
- Subject: syntax for Cygwin bash invoking Win apps
When I type a command in bash to invoke a Windows application (like cmd.exe, for example), I can't seem to find a pattern in the Windows command line that actually gets executed.? Ordinary bash syntax does not seem to apply in general when the command is a Windows app, but rather, sometimes special characters are interpreted in a bash-like way, and sometimes not.? So, I'm wondering what determines whether a quote mark or something gets interpreted or passed on.
Here are some examples:
$ cmd /c echo "/?"
Displays messages, or turns command-echoing on or off.
? ECHO [ON | OFF]
? ECHO [message]
Type ECHO without parameters to display the current echo setting.
# OK, so I'm getting the Windows echo, not the bash echo.? Good.
# Moving on...
$ cmd /c echo abc
$ cmd /c echo "abc"
$ cmd /c echo "\"abc\""
Anyone who knows the explanation would make me very grateful.? I've tried this with other Windows apps too, and the same weirdness seems to occur.
On a related note, I've noticed what appears to be an automatic sort of half-bash invocation (but not quite?) or something when I run Cygwin commands from cmd.exe.? For example,
> c:\cygwin\bin\echo hi
> c:\cygwin\bin\echo "hi"
> c:\cygwin\bin\echo "\"hi\""
> c:\cygwin\bin\echo *
myfile myotherfile yetanotherfile ...
> c:\cygwin\bin\echo $PATH
What the heck is going on?? Are there any rules here at all?? Sorry if I'm missing something dumb.? And sorry for apologizing for it.? And......
Thanks in advance,
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