Clear existing ones:
sed '/.*MARK --/d' messages > messagesf
#Or replace on the spot:
sed -i '/.*MARK --/d' messages
Only write it once per day:
vim /etc/default/syslogd
SYSLOGD="-m 1440"
Clear existing ones:
sed '/.*MARK --/d' messages > messagesf
#Or replace on the spot:
sed -i '/.*MARK --/d' messages
Only write it once per day:
vim /etc/default/syslogd
SYSLOGD="-m 1440"