Re: Bash heredoc on FD 3

[cyg Simple <cygsimple at gmail dot com>]

On 12/4/2018 7:13 AM, Houder wrote:
> On Sun, 02 Dec 2018 10:43:17, Steven Penny  wrote:
> > Using this file:
> >
> >      $ cat hello.sh
> >      awk -f /dev/fd/3 3<<eof
> >      BEGIN {
> >        print "hello world"
> >      }
> >      eof
> >
> > it runs as expected with Dash:
> >
> >      $ dash hello.sh
> >      hello world
> >
> > However it fails with Bash:
> >
> >      $ bash hello.sh
> >      awk: fatal: can't open source file `/dev/fd/3' for reading (No such file or
> >      directory)
> >
> > I tried also with Debian and both Dash and Bash work as expected. What is
> > causing Cygwin Bash to fail here?
>
> File to which symlnk /dev/fd/3 refers has "gone"; different from Linux, where
> the file is "deleted", but still "available".
> (note: dash uses a different implementation)

Dash is faster in processing the data but can be made to fail if you add 
-d to the ls commands you're using.

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cyg Simple

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