Arvind wrote:
> su - $amavisuser /usr/sbin/amavisd >/dev/null 2>&1
>
>
> what does 2 > &1 mean here actually
this is called shell redirecting.
"2>&1" makes the shell redirect STDERR to STDOUT.
whcih is going to /dev/null
More clear would perhaps be
$ su - $amavisuser /usr/sbin/amavisd &> /dev/null
which directs ALL output to /dev/null
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