[hobbit] Using ssh to retrieve hobbit data

On 1/4/06, Henrik Stoerner <henrik at hswn.dk> wrote:

[snip]

This is a rough solution. It doesn't deal with scp taking a loooooong time to login or timeout if your client is down; it doesn't delete the client-side status message, so if you client stops running you won't notice it going purple. But it should give you an idea of how it can be done, and it would work for the common case.

bb-fetch.sh doesn't delete the client-side status message either. It keeps the old copy and diffs the new copy against it. If there's no difference, the client-side isn't updating. So, your rough solution would become something along the lines of:

     # Save the old statusfile and get the new one
    mv $HOSTNAME.$MSGFILE $HOSTNAME.$MSGFILE.old
    scp hobbit@$HOSTNAME:client/tmp/msg.txt $HOSTNAME.$MSGFILE
    if [ -f $HOSTNAME.$MSGFILE.old ]; then
        changed=`$DIFF $HOSTNAME.$MSGFILE $HOSTNAME.$MSGFILE.old`
    else
        changed="new"
    fi

    if [ "$changed" = "" ]; then
         # report that the client isn't updating
    fi

Perhaps scp options ConnectionAttempts & ConnectTimeout would help deal with the long login timeout??

Ralph Mitchell