changing the log file content

[Arjun Shastry]

Hi,
In our environment, one application writes a logs in text format.Log file size goes upto 25MB .Log file rotation is used.
We want to modify the data(immediately) in the log file if record matches some expression. In what language program should be written?
Does the program need to poll the log file continuously?
Operating System is Solaris and we have Java/PERL installed.(and ofcourse SED/AWK).

Thanks

[Peter Johnson]

You might have a better chance of getting this answered in the Linux forum, I'll move it there.

[Maneesh Godbole]

In what language program should be written?
Does the program need to poll the log file continuously?

If you are considering Java, check out JNotify

[Arjun Shastry]

Thanks. I think SED will be good option as its alread there. Ouput of log file will be piped to Shell Script where I am writing SED regular expression and then printing it out.