tail and grep
when I try tail -f /var/log/messages | grep "local IP"
it prints (with a real IP address instead of 123.123.123.123)
Jul 7 20:06:00 server2 pppd[587]: local IP address 123.123.123.123
on my console. That's exactly what it should do. But if I try to
redirect it to a user's file (so he can see what his dynamic IP is) using
tail -f /var/log/messages | grep "local IP" > /home/pppusers/dynamic.IP
it does nothing but create a 0 byte file.
Questions:
1. What am I doing wrong?
2. Is there a way I can put this in the background so I don't have to
remain logged in as root?
Thanks in advance.
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