LinuxQuestions.org - [SOLVED] Make shell script to monitor a web service.

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Hi Again,

Please help to get below out put.

DOWNTIME=`date +%s`
UPTIME =`date +%s`

I want to take output of ($UPTIME - $DOWNTIME) in minutes and seconds..

Eg : Total downtime was 20 minutes and 10 seconds

Lets say I have below two variables.

Code:



!#/bin/bash

MEMFILE=lock-file



date +%s > $MEMFILE



sleep 130



UPTIME= `date +%s`

I want to take the output of ( $UPTIME - $MEMFILE) in minutes and seconds.

Eg:

"Total downtime was 2 minutes and 5 seconds"

Please help me...

Quote:

Originally Posted by kkrrss (Post 5562882)

I want to take the output of ( $UPTIME - $MEMFILE) in minutes and seconds.

It's a little easier to work with command substitution is you use $( ... ) instead of backticks. You can do arithmetic in the shell using $(( ... )) and can use addition, subtraction, multiplication, division, exponents, and modulus.

Here is a variant of your script set to do the first part of the calculation to get seconds, in preparation for then calculating the minutes.

Code:

#!/bin/sh



memfile=lock-file



date +%s > $memfile



sleep 130



then=$(head -n 1 $memfile)

now=$(date +%s)



downtime=$(( $now - $then ))



seconds=$(( $downtime % 60 ));



echo Downtime was X minutes and $seconds seconds

Can you see how to modify it to get minutes?

Hello Turbocapitalist,

Yeah.. I got it.

Minutes=$(( $downtime / 60 ));

Thanks a lot for your support. and for everyone who have supported me out...