Running a check platform script

Shell Programming and Scripting
1

Hi,

I want to run a check platform & application script under ksh (Soaris boxes).
It runs some commands and it take some time.
I want to customize it like that:

  • output is too big, hence I want some output of the commands to be redirect
    ed in an output file (or maybe two or three) - not all just a part of them
    & commands alternate by execution order
  • I want to run it in bg only when I want to allow some
    other jobs meanwhile - customize it by params.when it is launched?

Which is the easiest way to implement it?

Thx,

2

Suppose your script is something like:

#!/usr/bin/ksh

test1
test2
if [ $somevar -eq 5 ]
then
test3
fi

if [ "`hostname`" == "bigserver" ]
then
test4
fi

test5
test6
test7

etc

You can group some part using "{" and "}" and redirect the output for all command withing a group to the same file.

so

#!/usr/bin/ksh
{
test1
test2
} > resultfile1

{
if [ $somevar -eq 5 ]
then
test3
fi

if [ "`hostname`" == "bigserver" ]
then
test4
fi
} > resultfile2

{
test5
test6
test7
} resultfile3

if you want errors included in those files just change e.g.
> resultfile1
into
> resultfile1 2>&1

3

It works to group some part using "{" and "}" and redirect the output OK but in fact I want both - the output to be displayed and meanwhile to be redirected in some result file running the same command only once.
For some commands I want both for some other not.

Also I want that my script to analyse an output already generated previously - more specific:

After I run a "df -k" command I want that my output of "df -k" to be analysed later in the same script.
I'm interested only in those partitions that starts with "/dev/" or that have a specific name (excluding swap & similar) and if the percentage of the occupied space is greater than some critical value the script must display a NOK and in addition that line from "df -k" again as a warning - otherwise OK.

Does anyone know if this is possible?

4

{
............
} | tee resultfile

to have output displayed as well as redirected to a file.

If you want to use the out of a command later on the script you either have to store the result in variables or send it to a file and read back this file later on.

The have the result of only specific filesystems is a matter of piping the output of df -k to grep with the right regular expression

5

If the purpose of this script is to check the system and generate some kind of "alarms" in specific situations you better check out SNMP