On 10/23/18 12:06 PM, Greg Wooledge wrote:
> On Tue, Oct 23, 2018 at 03:20:12PM +0000, Chen, Farrah wrote:
>> But in Bash script, it cannot work, it keeps its original value:
>> [root@fchen ~]# cat test.sh
>> #!/usr/bin/bash
>> echo $PS4
>> echo $FAN
>
> This is because you're doing it as root. Bash strips PS4 from the
> environment when started as root, as a security precaution.
That change came in in bash-4.3 (patch 48). His vendor probably patched
their version of bash-4.2 to do the same thing.
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU c...@case.edu http://tiswww.cwru.edu/~chet/
