dmesg 信息实时监控其改变

-w

--follow

$ dmesg -wH

方法二：

watch -n 0.1 "dmesg | tail -n $((LINES-6))"

$((LINES-6))

#!/bin/bash
end=`dmesg |wc -l`
while true
do
sleep 1
end2=`dmesg |wc -l`

if [ "$end" != "$end2" ]; then
dmesg |awk '{print NR, $0}'|tail -$((end2-end))
end=$end2
fi

if [ "$end" -ge 1000 ]
then
dmesg -c >/dev/null 2>&1
echo "**********************"
echo "*dmesg -c now;       *"
echo "**********************"
end=`dmesg |wc -l`
fi

done