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Full Discussion: Put currently running script into background
Top Forums Shell Programming and Scripting Put currently running script into background Post 302979786 by JackK on Friday 19th of August 2016 02:50:05 AM
Old 08-19-2016
Wrench Put currently running script into background
Hi All,
Suppose I have a script and inside it I want/need to put it into background. I need the script to not react to SIGHUP signals.
I tried:
Code:
#!/bin/bash
echo "" > test_disown
mypid=$$
echo "PID=$mypid"
(
kill -SIGSTOP $mypid
jobs > myjobs
#disown -h <job-spec>
#kill -SIGCONT $mypid
) &
while [ 1 ]; do
        echo $(date) >> test_disown
        sleep 10
done

When I run this script I have the output:
Code:
'disown' test
PID=7083
 [4]+  Stopped                 ./test.sh

Now from the console I can do "bg %4" and the script runs in background.
I want to run bg from the script, but I don't know the job-spec number of my stopped script.
The line "jobs > myjobs" created empty file myjobs.
How to overcome this?

Please help,
Jacek
 

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LEARN ABOUT SUNOS

script

script(1)							   User Commands							 script(1)

NAME

       script - make record of a terminal session

SYNOPSIS

       script [-a] [filename]

DESCRIPTION

       The  script  utility  makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the
       record is saved in the file typescript. See WARNINGS.

       The script command forks and creates a sub-shell, according to the value of $SHELL, and records the text from this session. The script ends
       when the forked shell exits or when Control-d is typed.

OPTIONS

       The following option is supported:

       -a	Appends the session record to filename, rather than overwriting it.

NOTES

       script places everything that appears on the screen in filename, including prompts.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |CSI			     |Enabled			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5)

WARNINGS

       script  can  pose  a  security risk when used in directories that are writable by other users (for example, /tmp), especially when run by a
       privileged user, that is, root. Be sure that typescript is not a link before running script.

SunOS 5.10							    30 Jan 2004 							 script(1)
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