Re: Question about the 'read' command in bash

[Bob McGowan <rmcgowan at veritas dot com>]

ksh is not bash (nor is it pdksh).  ksh manages to do several things in the
current shell, while bash and pdksh handle it in a sub-process.  Variables in a
sub-process cannot affect the environment of the parent.

The solution is to use substitution:

  op_sys=$(uname | cut -c1-4)

and use the value.  I'd suggest that this is the more portable and probably the
preferred way of doing this.

JROZYCKI@ebmail.gdeb.com wrote:
> 
> I have a bash shell script with the following lines of code:
> 
> #!/bin/bash
> uname | cut -c1-4 | read op_sys
> echo $op_sys
> 
> This works fine at work using SGI IRIX and ksh, but under cygwin and bash
> at home, op_sys does not get set - null is echoed.. what do I need to do
> differently?
> 
> thanks,
> Jeff
> 
> --
> Want to unsubscribe from this list?
> Check out: http://cygwin.com/ml/#unsubscribe-simple

-- 
Bob McGowan
Staff Development Engineer
VERITAS Software
rmcgowan@veritas.com

--
Want to unsubscribe from this list?
Check out: http://cygwin.com/ml/#unsubscribe-simple