Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: linux service script for storing uptime
Homework and Emergencies Homework & Coursework Questions linux service script for storing uptime Post 302480369 by methyl on Tuesday 14th of December 2010 04:41:39 PM
Old 12-14-2010
To run a Shell script as a service.
Code:
nohup /path/scriptname & ; PID=$?
#Don't forget to record the PID in a file because we will need it on shutdown.


Some pointers:

1) Check with your tutor
Is using the unix "uptime" command allowed?

2) How do you stop the process?
Some prefer using a "semaphore" file which when it exists causes the script to remove the file then exit.
Others prefer using a Shell "trap" command and issuing say a "kill -15" to stop the script.
I use both. Sometimes you can't wait for a poll.

3) Here is an example of continuous operation of a Shell script as a Service.
Code:
MYEXIT ()
{
if [ -f /var/tmp/exit_uptime_monitor ]
then
       rm /var/tmp/exit_uptime_monitor
fi
exit
}
#
trap 'MYEXIT' 1 2 3 15
#
#
while true
do
       # Check whether we need to exit
       if [ -f /var/tmp/exit_uptime_monitor ]
       then
              break
       fi
       #
       #
       # Check whether we have been told of a reboot
       # Hint process the "start" parameter if this is a rc script.
       #
       #
       # Do my process here
       #
       #
       sleep 60             # Seconds
done
#
# Clean up and exit
MYEXIT

4) Can your process keep running ?
This is unix. Uptime in months and years is not unusual.

5) If you are using rc scripts
You have a S script to get things started on reboot.
Don't forget to have a K script which issues an appropriate "kill -15"
to get stop the background script quickly.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

script to autorestart if uptime greater than... help needed.

i'm trying to write a script that will check my os x box for uptime and autorestart gracefully if the uptime is greater than a certain number of days. thus far i have this: if uptime | cut -d ',' -f 1 | cut -d ' ' -f 4 -gt 10 ; then echo "yes" fi this doesn't work and i've tried... (11 Replies)
Discussion started by: alternapop
11 Replies

2. Shell Programming and Scripting

calculate server uptime in % (99.98), using ksh script

Let me preface by saying, I have looked through many threads that deal with keep the decimal, however I'm not sure that any one resolution meets my needs, ok, ok, they could. So maybe it's just that I am not understanding the resolution - therefore I am posting a new thread. myknowledgebase=at... (2 Replies)
Discussion started by: cml2008
2 Replies

3. Programming

Linux Service

Hi, I want to write a service like windows service for my rhel4u5 server.And this service every day at 4:00 am connect a ftp server and download file then parse information at txt file then insert or update info at my database server(oracle).and this service can be stopped or paused by user.And... (1 Reply)
Discussion started by: ariyurek
1 Replies

4. UNIX for Dummies Questions & Answers

Storing lines of output into a script variable

I'm sure this is a simple thing but I can't figure it out. In a script that I'm writing, I'd like to be able to store each line of output from "ls -l" into a variable. Ultimately I'd like to end up with something like: for a in `ls -l` do something with $a doneBut that's reading each... (2 Replies)
Discussion started by: ewoods
2 Replies

5. Shell Programming and Scripting

rsync - storing password in script

Hello, I wish to store the password in an rsync script so that when prompted it just enters the password. I know I can set up passwordless logins, but I have never been able to do this on this particular server so I am resorting to storing the password in the script: rsync -avz -e ssh... (4 Replies)
Discussion started by: stuaz
4 Replies

6. Shell Programming and Scripting

linux service script for storing uptime

Hi, Can you please advise a script for the following: write linux service named system_up_duration .This service will create one file named uptime in directory ‘/temp/'. In this file the service will store the total time for which the system is up and running .The file will be updated after... (1 Reply)
Discussion started by: fed.linuxgossip
1 Replies

7. Shell Programming and Scripting

Extract the uptime from the output of the uptime command

Hi! I want to extract the uptime from the output of the uptime command. The output: 11:53 up 3:02, 2 users, load averages: 0,32 0,34 0,43 I just need the "3:02" part. How can I do this? Dirk (6 Replies)
Discussion started by: Dirk Einecke
6 Replies

8. Shell Programming and Scripting

Perl script for taking inputs from one script and storing them into a document.

Hi. I wanted to create a Perl script which can take the outputs of a Perl script as it's input and temporarily store them in a document. Need help. Thanks.:) (8 Replies)
Discussion started by: xtatic
8 Replies

9. Shell Programming and Scripting

Uptime script

How to write a shell script which can generate server uptime report from the UNIX servers? (3 Replies)
Discussion started by: paventhan
3 Replies

10. Shell Programming and Scripting

Storing the Linux command output to an array in perl script

Hi I am trying to store the output of a command into an array in perl script. I am able to store but the problem is i am unable to print the array line with one line space. i mean i inserted the \n in loop ...but not getting the result. I have written like this #!/usr/bin/perl @a =... (2 Replies)
Discussion started by: kumar85shiv
2 Replies

LEARN ABOUT NETBSD

debconf-mergetemplate

DEBCONF-MERGETEMPLATE(1)					      Debconf						  DEBCONF-MERGETEMPLATE(1)

NAME

       debconf-mergetemplate - merge together multiple debconf template files

SYNOPSIS

	debconf-mergetemplate [options] [templates.ll ...] templates

DESCRIPTION

       Note: This utility is deprecated. You should switch to using po-debconf's po2debconf program.

       This program is useful if you have multiple debconf templates files which you want to merge together into one big file. All the specified
       files will be read in, merged, and output to standard output.

       This can be especially useful if you are dealing with translated template files. In this case, you might have your main template file, plus
       several other files provided by the translators. These files will have translated fields in them, and maybe the translators left in the
       english versions of the fields they translated, for their reference.

       So, you want to merge together all the translated templates files with your main templates file. Any fields that are unique to the
       translated files need to be added in to the correct templates, but any fields they have in common should be superseded by the fields in the
       main file (which might be more up-to-date).

       This program handles that case properly, just list each of the translated templates files, and then your main templates file last.

OPTIONS

       --outdated
	   Merge in even outdated translations. The default is to drop them with a warning message.

       --drop-old-templates
	   If a translation has an entire template that is not in the master file (and thus is probably an old template), drop that entire
	   template.

SEE ALSO

       debconf-getlang(1)

AUTHOR

       Joey Hess <joeyh@debian.org>

								    2012-09-10						  DEBCONF-MERGETEMPLATE(1)
All times are GMT -4. The time now is 11:52 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy