Question about the 'read' command in bash

Thu May 10 12:46:00 GMT 2001

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