Possible bash incompatibility

Christopher Faylor cgf-no-personal-reply-please@cygwin.com
Mon Apr 18 16:02:00 GMT 2005


On Mon, Apr 18, 2005 at 10:59:10AM -0400, Igor Pechtchanski wrote:
>On Mon, 18 Apr 2005, Arash Partow wrote:
>>Could someone tell me why the piece of bash script below is being
>>rejected as being erroneous on cygwin but works fine on other bash's
>>ie: linux and openbsd?
>
>I would imagine because the output of "uname -s" doesn't contain
>"CYGWIN" on either Linux or OpenBSD, so "grep -c" outputs a 0.  But
>even on Cygwin this works (as Brian already confirmed).
>
>>my current version of bash is update (2.05b).
>>
>>#!/bin/bash
>>
>>if [ `uname -s | grep -c 'CYGWIN'` -eq "1" ]; then
>
>FWIW, a better test would be
>
>if uname -s | grep -q 'CYGWIN'; then ...

How about

if [[ $(uname -s) == CYGWIN* ]]; then

cgf

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