Shell Programming and Scripting

Hi All,

I am on a Solaris OS and i have come up with a csh script named " mycshscript " which will grab data from a datalog file & format the grabbed data & upload formated version to web server. I would want to have this script to run non-stop so that the latest can be captured since data is always appending to the datalog file. Below is a skeleton of my script using a while loop to loop non-stop.

My question is that
1) Does closing my command console stop the running of my script?
2) If i want to stop my script from running, how am i able to do it in a clean manner?

Code:

#!/bin/csh

set num = 1

while ($num == 1)

......
.......

end

Normally.

The traditional solution is

Code:

nohup myprogram &

and run it from a shell without job control.

This will

(a) run the program in the background
(b) ignore any SIGHUP generated by the terminal "hanging up".

Hi Porter,

1) How do i stop the process if i need to?
2) how do i need to create a while loop for this ?
3) If there's an echo command, will it be printed out ?
4) Do i need to add in the " nohup myprogram & >/dev/null 2>&1 " just like cronjob to remove all the echoing and printing command ?

Not necessarily.

I could do the same with ' ksh / zsh ' - which has a good job control.

Would that create any difference ?

get the process id and use kill
already there is a while in your script
use re-direction operators to redirect both stderr and stdout to log-file
thats a better way of doing it.

[QUOTE=matrixmadhan;302144018]get the process id and use kill

already there is a while in your script

use re-direction operators to redirect both stderr and stdout to log-file


1) How do i get the process id and kill it ? What's the command?

2) I see. Thanks

3) What if there's no redirection operators ? What will happen ?

4) Can i use this ?
nohup myprogram & >/dev/null 2>&1

Run it from a shell that when you try to exit the shell doesn't refuse because it complains you still have jobs running.

man nohup, typically end up with a file called "nohup.out".

Sure, as always, give it a go, see what it does, try and break it.