Scripts to keep Date and logs between reboots

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ciscodlink
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Joined: 13 May 2014
Posts: 266

PostPosted: Sat Jan 30, 2021 15:42    Post subject: Scripts to keep Date and logs between reboots Reply with quote
Thought I'd share a couple of script commands that I use to carry over the date and logs between reboots, they require the permenat storage such as jffs. I carry over the date in the rare case ntp doesn't work.

Startup Script

Code:
date +%s -s @$(awk '(getline a <"/proc/uptime") <= 0 {exit}; {printf ($0 + ("%f"a/1000))}' /jffs/date.old

cat /jffs/messages /tmp/var/log/messages > /tmp/var/log/messages.0 && tail -c 5000 /tmp/var/log/messages.0 > /tmp/var/log/messages && rm /tmp/var/log/messages.0



Shutdown Script

Code:
date +%s > /jffs/date.old

tail -c 5000 /var/log/messages > /jffs/messages
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mwchang
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Joined: 26 Mar 2013
Posts: 1285
Location: Hung Hom, Hong Kong

PostPosted: Mon Nov 07, 2022 7:25    Post subject: Reply with quote
Might be related:

DD-WRT :: View topic - System Log on USB
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=331542

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