Tiny Core Linux
Tiny Core Base => TCB Bugs => Topic started by: uli on June 17, 2025, 12:36:01 PM
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I am using piCore 64 (16.x, ... excellent!) behind a firewall with proxy web access. All working well afaics. Except provides.db cannot be downloaded, since provides.sh tries to ping 8.8.8.8.
I cannot quite believe that this could possibly be an intended feature. There must be other places within tiny / Core where network access is being probed and confirmed successfully, even behind my firewall. Maybe trying to ping the selected mirror would be a better option ? Or whatever the default probing in other Core scripts might be...
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Hi uli
Feature. It was added to check connectivity to the outside world.
You can read about how it evolved starting around here:
https://forum.tinycorelinux.net/index.php/topic,27363.msg176244.html#msg176244
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Hi Rich,
Thanks for explanation.
Fixed it for my specific use case then. Just wouldn't have thought it to be a rare case, sitting behind a somewhat restrictive firewall...
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Hi uli
... There must be other places within tiny / Core where network access is being probed and confirmed successfully, ...
Hi GNUser
... Why not go with Robert's approach (which shows up in tc-config and settime.sh ):
ifconfig | grep -q Bcast || return 1 ...
Funny you should mention it. That will detect the NIC was brought up.
It will not detect an unplugged network cable or problems upstream.
Oh, and watch this:
tc@box:~$ ifconfig eth0 | grep Bcast
inet addr:192.168.1.45 Bcast:192.168.1.255 Mask:255.255.255.0
tc@box:~$ sudo ifconfig eth0 down
tc@box:~$ ifconfig eth0 | grep Bcast
inet addr:192.168.1.45 Bcast:192.168.1.255 Mask:255.255.255.0
tc@box:~$
I also considered using this:
ifconfig eth0 | grep RUNNINGThat will detect taking down the NIC and unplugging the network cable.
While it detects a disconnect between computer and network switch, it
won't detect a disconnect between network switch and router.
The Apps utility will hang for a minute or two if it can't connect to
the repo, a behavior we want to avoid in provides.sh.
... Maybe trying to ping the selected mirror would be a better option ? ...
Hi t18
Pinging the repo will temporarily lock you out:
... About the ping, that's part of the port scanning protection. You essentially blocked yourself for a short time.
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... Just wouldn't have thought it to be a rare case, ...
You are the first person to report this as an issue.