On Saturday, 22 June 2019 13:05:21 UTC+1, Dave, G1OGY wrote:
>
>
>
>    while read line ; do
>        echo "$line" | grep -q "[Errno 110]"
>           if [ $? = 0 ]
>
>

the "[" "]" are an unforeseen problem to `grep`;
Change to simply:
     "Errno 110"


'OGY
--- 
http://www.g1ogy.com/wx

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