Shell Programming and Scripting

Chaps, I need to count number of files in a remote directory from Linux (FreeBSD) as if 10 trace files (log files) been generated within 5min of time. So this is the script then I can setup a monitoring.

I came across with ls -1 \ip\d:\Logs | wc -l but then what else requires to check time stamp, maybe I should use if ...then

Really appreciated any feedback

Sam

Moderator's Comments:

edit by bakunin: added ICODE-tags

I may be a bit slow, but i don't get what you want to do: get the log files of the last 5 minutes? Get the last 10 logfiles?

And this:

is similarly mysterious to me: first, this is not a script, it more (or less, in fact: rather the latter) looks like a single command (syntax errors notwithstanding). You can execute - if it is meant as a command - that only locally, so: do you want to execute it remotely or locally or what? Second, the "path" looks suspiciously like a Windoze path, not a UNIX path. Is this a Windows system and, if yes, what is the FreeBSD system you spoke about earlier? Third: what do you mean by "monitoring"? Should this repeated many times over? And, if yes, what exactly are you supposed to monitor: number of files, size of files, size of all files, size/number of files created since last run of script? Something different?

bakunin

Let me to explain, a Windows server generating trace files. F5 load balancer wants to monitor those files. F5 big-ip runs on Linux freebsd. So I try to run a script on F5 when the condition match it will take the Windows server out of availability pool based on monitoring condition.

Here is the condition to trigger:
If 10 files are created within last 5 minutes then monitor takes server offline. I can include this script in the F5 device. Size of trace decide by end server which is a Windows. Hope that little bit clearer

OK, this makes it a bit clearer. In this case you only need to plug your monitor "sensor" into the file sending process, like this (pseudo-code, just to demonstrate the logic):

Code:

function send_file ()
{ 
   take timestamp of current time
   add timestamp to list of sent files
   send file
}

main ()
{
   create empty list of sent files
   while <list is shorter then 10>
   {
       if <any entry in list is older than 5 minutes>
            remove this entry from list
       endif
       if <server ordered a file>
            send_file()
       endif
   }
   take server offline   # loop is left only if 10 or more entries in list
}

I hope this helps.

bakunin

Great, is this the code I should try or do I need modification on this

Honestly: i don't know. You gave a roundabout description of your requirement and i wrote a roundabout solution. To really implement this you will need to specify in much more detail what your requirement is.

For instance (one of the things needing clarification): what should happen after taking the server offfline? Wait for some time and put it online again? (If yes: how long would be "some time"?) Do nothing and leave it offline?

Another detail needing clarification: what is meant by "send file(s)"? Transfer it with scp/rcp/rsync/ftp/sftp/or the likes? Socket communication? Anything else?

In any case: what i wrote was pseudo-code, which just shows a possible logic and control flow of a program which has to be implemented. To actually implement it you need to select a programming language first which you want to use (i.e. "bash" or "Korn Shell" or "perl" or "ruby" or "python" or "whatever else you might want to use, version 3.141596", etc..

I hope this helps.

bakunin

Ideally need bash, to check whether 10 files within 5min been created. If that's true then F5 big-ip actions to bring server out of the pool. Script should only check the condition. F5 will setup how frequent to check (every 5 sec) and take the action.

Actual files are generating on the Windows web server, itself location E:\logs

Hope that helps to help me further

Thanks