On 2008-02-07 16:28Z, Paul Leder wrote:
>
> [...] I've written an app which runs on Linux and
> "Windows". Most of the time on "Windows", it's probably going to be
> running on Cygwin/bash. However, there's always going to be someone who
> runs it in a DOS box.
>
> So, my problem is, how do I find out if they've got a sane shell or not?
> I can't ask them to export SHELL; I might as well just ask them to
> provide a command-line arg to tell me what their shell is anyway. I need
> some automatic way to do it.
cat >what_shell.c <<\EOF
#include <stdio.h>
#include <stdlib.h>
int main()
{
int z;
z = system("uname");
printf("%d\n", z);
return z;
}
EOF
gcc -mno-cygwin -o what_shell.exe -W -Wall -pedantic -ansi what_shell.c
Cygwin bash output:
$ ./what_shell
CYGWIN_NT-5.1
0
CMD.EXE output:
C:\cygwin\tmp>what_shell
'uname' is not recognized as an internal or external command,
operable program or batch file.
1
Of course, that'll report a sane shell even in CMD.EXE if
Cygwin's /bin is on $PATH, but IIRC that might be what you
want: for example, it'll tell you whether you can run 'ls'
or have to fall back on 'dir'.
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