How to read log files from last read

sumitsks · February 13, 2012, 4:54am

Hi
i am looking a way to look at a log file(log.txt) from the last time I've read it.
However after some days the main log file(log.txt) is rename to (log.txt.1).
So now i will have two log files as below.

log.txt.1
log.txt

Now, i have to read the log from the point where i have left the last read.
I can do this by storing the last line no# read in seperate file and and start reading the log file from that line, however if the log files is renamed(backed up), this logic will not work.

Any suggesstion.

Skrynesaver · February 13, 2012, 4:58am

Is there a time stamp in the log entries?

sumitsks · February 13, 2012, 5:02am

Yes, it has the timestamp in the below format.

2012-02-12 07:01:04 some string....

Skrynesaver · February 13, 2012, 7:25am

Then surely the correct approach would be to remember the last read time stamp, grep for it, open that file ...