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From: jornws200602@xs4all.nl (Oscar)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Delaying Autostart
Date: Tue, 3 Jun 2025 13:00:54 -0000 (UTC)
Organization: A butterfly in Tokio
Lines: 24
Message-ID: <101mrm6$sht$1@dont-email.me>
References: <101gqp3$1ro0p$1@dont-email.me> <101itmk$2mr8t$1@dont-email.me>
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In article <101itmk$2mr8t$1@dont-email.me>,
Lawrence D'Oliveiro  <ldo@nz.invalid> wrote:
>Instead of waiting for some fixed interval, you could add a prior command 
>using wget or something to repeatedly try accessing that URL, say at 5 
>second intervals or whatever, until it becomes accessible, before allowing 
>the startup to proceed.

For inspiration, I made a script to 'etherwake' a device and wait for it
to get ready using wget in combination with the 'timeout' command. I run 
'timeout 1 wget <url>' which returns an error if wget does not respond
in 1 second, or wget returns an error itself. I use this in a while
loop that repeats this until the wget succeeds:

    etherwake -D -i ${IFACE} ${MACADDR}

    while ! timeout 1 curl --noproxy \* "${URL}" &> /dev/null
    do
        echo -n .
        sleep 1
    done

The OP could replace the 'sleep 120' in the other script with this loop.
-- 
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