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Read Input and go BG

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# 1  
Old 09-19-2012
Read Input and go BG
My script needs to get some input from the user and go as a background process and run.

I have something like

Code:
read input.
do
while ...
if
..
fi
done

can i use nohup inside the script??
Last edited by Corona688; 09-19-2012 at 03:23 PM..
# 2  
Old 09-19-2012
Nohup is good, and &, and disconnecting the user so they cannot generate other signals that still go to the child processes. I used to lose my X windows manager mwm because I hit ctrl-C (intr, SIGINT) on my keyboard to stop an interactive process on the same xterm I launched 'nohup mwm &' from!
# 3  
Old 09-19-2012
Question Read Input and go BG
The script initially gets the input from user..
for ex -
Code:
# sh emp.sh
enter your username.
antergen

After the input i want the script to go backgroup to process the emp record.

& - Hangs thr after input.
nohup - gives bad interpreter for the read command
Last edited by Franklin52; 09-20-2012 at 04:41 AM.. Reason: fixed code tags
# 4  
Old 09-19-2012
You nearly had the code tags, but you need to use square [ ] brackets, not < > HTML brackets. Thanks for trying.
# 5  
Old 09-19-2012
To avoid hanging, redirect stdin, stdout and stderr to release the terminal as much as possible.
  • Stdin can be /dev/null, /dev/zero, from a file or from a pipe, but then you want to nohup a shell to run and monitor the multiple commands, and you still have any stdin from the first command in the set.
  • Stdout can be a pipe, but something still has to deal wth stdout for the last command in the set, a file or /dev/null.
  • Stderr can be redirected to stdout, to a file or /dev/null.
The & should then set it free. The nohup just helps it survive terminal logout.
This User Gave Thanks to DGPickett For This Post:
Antergen
# 6  
Old 09-19-2012
Quote:
Originally Posted by DGPickett
To avoid hanging, redirect stdin, stdout and stderr to release the terminal as much as possible.
This is mostly what nohup does. But if you want a program to interact with the terminal then go into background, nohup of course can't do it for you, you have to do it yourself...
This User Gave Thanks to Corona688 For This Post:
Antergen
# 7  
Old 09-19-2012
Thanks everyone..

I just used arg$ and passed it as input and then took it to backgroud.
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