Mail Archives: cygwin/2003/08/05/16:35:45
David,
At 13:14 2003-08-05, David Selby wrote:
>You are dead right, I tried
>
>/bin/bash <script>
>
>and it worked perfectly, but I am afraid I do not understand why ...
>echo $BASH_VERSION
>Tells me I have bash
>
>I call cygwin with ...
>c:\cygwin\win\rxvt.exe -e \bin\bash --login -i
>ie bash
>
>Where did ash (a stripped down bash?) come in ?
As I understand it, it all goes back to the big bang...
I don't understand the question. Cygwin has for a long time used ash as
it's /bin/sh. Ash is a POSIX compliant shell and is much lighter-weight
than BASH. For purposes such as interpreting commands issuing from
makefiles, it's faster start-up time makes it a better choice.
You script assumed BASH--that is, it used BASH-specific features. Thus
it should explicitly invoke bash in its #! line. The fact that most
Linuxes use BASH as their /bin/sh probably falsely led you to believe
that BASH was _the_ shell in POSIX-compliant systems. That's not true.
In fact, for a long time, even /bin/bash was a version 1.2 BASH, and
that was a far cry from what we now know as BASH.
>Dave
Randall Schulz
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