Retriving a particular line

[akshayjohari]

Hi,
Can anyone knows how can I retrieve a particular line from a file.
Basically, I wanna fetch some lines from SYSLOG-NG. It has all the log of servers. There are some files like: cron.info , mail.info etc. and cron.warning, mail.warning etc. I wanna retrieve the lines that has "*.warning".

Can anyone plzs tell me how can I do that.


Thanks

[saikee]

akshayjohari ,

Welcome to JustLinux.

I don't write many scripts and wouldn't know enough to do your task with Bash. However I am sure Python can eat it for breakfast as it has a good set of the string handling functions. As you can execute a Python script same as a Bash script so my suggestion is to try it out. Python is shipped as a standard feature in most of the Linux I come across.

Asking people to Write a script can run into a funny reception as many forum members are reluctant to help thinking they are conned into doing homework for a student. Therefore it would help your case if you build part of it, to show you have tried but got stuck, and show us your input data, say in truncated form.

[DrChuck]

You could also do this with grep. Here is how I would test one file:
grep -H ".warning" mail.info
You may want to add some more options ( see the grep man page ), and wrap a script around it to cover all the files you are interested in.

drChuck