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[Bug-wget] Retrying/killing

From: Paul Wagner
Subject: [Bug-wget] Retrying/killing
Date: Tue, 02 Oct 2018 17:42:09 +0200
User-agent: Posteo Webmail

Dear wgetters,

I'm trying to grab some webradio programmes with wget and have encountered two difficulties:

* First, my internet connection sometimes breaks, and I would like wget to retry as long as I don't kill it. I tried wget --tries=inf --retry-connrefused, but that does not retry e.g. when the interface goes down (this is how I tested my script). Am I missing something here?

* In order to have my script retry, I ended up with something like

function job() {
    while true
        wget -a "$name.log" -O "$name-$i.mp3" "$url"
    done &
    sleep $length
    kill $!

while true
    t=$(date '+%M %H')
    while read startmin starthour length url name
        [[ $t == $startmin' '$starthour ]] && job &
    done < conf-file
    sleep 60

Interestingly, the 'kill $!' kills the loop, but wget is not killed, but lives on with init as parent process. Not really understanding what is going on here I can only guess this 'detaching' of the wget-process happens because it's ignoring SIGHUP? The only solution I could come up with is using 'ps' to find the PID of the wget that has the loop-subshell as PPID, then killing the loop, and then killing wget separately, but this is so ugly that I can't imagine that there is no neat solution.

(Apologies if this isn't the appropriate place for asking this, as it might actually be a bash-question. Any other suggestions or remarks highly welcome, too.)

Kindest regards,


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