Need help implementing a timout in my Shell Script for RHEL6 Post: 302911159

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Top Forums Shell Programming and Scripting Need help implementing a timout in my Shell Script for RHEL6 Post 302911159 by mo_VERTICASQL on Wednesday 30th of July 2014 12:46:39 PM

07-30-2014

Registered User

Ideally, I would like to implement less watcher scripts as a best practice (This is an enterprise environment)

and the script I am going to implement will run every minute so it might be an unnecessary load to do what you suggest.

If I am wrong or my assumptions in correct let me know.

and FYI, the script will be scheduled to run every 1 minute, in background.
It has a LOT of temporary variables too -so the cleanup process more complicated.

---------- Post updated at 12:03 PM ---------- Previous update was at 12:00 PM ----------

also I found this googling,

is this something that might work or no?

Code:

trap 'echo script_timeout ; exit ' USR1   
wait_n_sig() {    sleep $2    [ -d /proc/$1 ] && kill -s USR1 $1 }   
timeout() {    wait_n_sig $$ $1 & }   
timeout 5 read -p "Name: " name echo "Your name is " $name

---------- Post updated at 12:06 PM ---------- Previous update was at 12:03 PM ----------

DGPICKETT, for the watcher script you describe can you expand on the logic for me I am bit of an intermediate shell guy.

like I mean if its not too much could you expand:
1.....
2.....
3....

in terms of what you mean.

Thanks!

---------- Post updated at 12:14 PM ---------- Previous update was at 12:06 PM ----------

If I implement in my subshell the script running too long kill and email its just basically this right:
-----------------------------
(
##If runs for this time
##KILL MAIN.sh
##EMAIL NOTICE
)

MAIN.SH
------------------------------

---------- Post updated at 12:46 PM ---------- Previous update was at 12:14 PM ----------

Will this do as the watcher subshell ?

Code:

( sleep 20 ) & pid=$! ( sleep 2 && kill -HUP $pid ) 2>/dev/null & watcher=$! if wait $pid 2>/dev/null; then     echo "your_command finished"     pkill -HUP -P $watcher     wait $watcher else     echo "your_command interrupted" fi

Last edited by Franklin52; 07-30-2014 at 03:01 PM.. Reason: fixed tags

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LEARN ABOUT OPENSOLARIS

systemd-tty-ask-password-agent

SYSTEMD-TTY-ASK-PASSWORD-AGENT(1)			  systemd-tty-ask-password-agent			 SYSTEMD-TTY-ASK-PASSWORD-AGENT(1)

NAME

       systemd-tty-ask-password-agent - List or process pending systemd password requests

SYNOPSIS

       systemd-tty-ask-password-agent [OPTIONS...] [VARIABLE=VALUE...]

DESCRIPTION

       systemd-tty-ask-password-agent is a password agent that handles password requests of the system, for example for hard disk encryption
       passwords or SSL certificate passwords that need to be queried at boot-time or during runtime.

       systemd-tty-ask-password-agent implements the Password Agents Specification[1], and is one of many possible response agents which answer to
       queries formulated with systemd-ask-password(1).

OPTIONS

       The following options are understood:

       --list
	   Lists all currently pending system password requests.

       --query
	   Process all currently pending system password requests by querying the user on the calling TTY.

       --watch
	   Continuously process password requests.

       --wall
	   Forward password requests to wall(1) instead of querying the user on the calling TTY.

       --plymouth
	   Ask question with plymouth(8) instead of querying the user on the calling TTY.

       --console
	   Ask question on /dev/console instead of querying the user on the calling TTY.

       -h, --help
	   Print a short help text and exit.

       --version
	   Print a short version string and exit.

EXIT STATUS

       On success, 0 is returned, a non-zero failure code otherwise.

SEE ALSO

       systemd(1), systemctl(1), systemd-ask-password-console.service(8), wall(1), plymouth(8)

NOTES

	1. Password Agents Specification
	   https://www.freedesktop.org/wiki/Software/systemd/PasswordAgents

systemd 237													 SYSTEMD-TTY-ASK-PASSWORD-AGENT(1)

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