Solaris

Dear All,

I need Your help....

we have a an out file that is updated from time to time ( every x seconds )... can we make a script to check if the file contains a spesific patteren.... if it does, we need to make an action like running another script.....

is this possible without makin cronjob to check wiehther the file contains the pattern or not ? I mean when the input file recieves "?????" do action.


Thanks so much for your help..

Did you mean to check pattern in the entire file each time ?

<grep should do this>

Or, check for the existence of the pattern in every data segment that is updated in 'x' seconds.

<Save, the file pointer and grep for the update section only>

Yes, it is possible but what's wrong with cron jobs ?

I know grep should do it.... but if I want to check the pattern every five seconds... I need to make a cronjob to run the grep command.... right ?
what Im asking is that if I can check it automatically once the file contains this pattern with out any cronjob...

once the file has the patteren..... do something...

I cant use cronjob becasue it's not allowed on our server

Insted of every five seconds how about when it happens - see if
tail -f <filename>
meets your needs to keep getting newly added records.

Then you should be going for your own job, with an "always running script" to check for every 5 minutes or so

Dear matrixmadhan

Honestly... this is what we are trying not to do.... we cant keep checking the file because this will take a lot of time.... we need somekind of alert when it happens... what do you suggest... ?

Thnaks a lot