how to trap unix signal if the process killed/interupt occured in bash...


Login or Register for Dates, Times and to Reply

 
Thread Tools Search this Thread
# 1  
how to trap unix signal if the process killed/interupt occured in bash...

hey champs,

I have a process running.......i have to catch/trap the signal when the process is being interupted/killed (kill -9 pid) option......

how can i achieve the same thru my process........

let my process is a.sh and it supposed to take 13 mins to complete, but due to some problem , somebody killed that process a.sh using kill -9 <pid of a.sh>, so i want to log the message that process a.sh is killed .
...

how can i achieve...
# 2  
You cannot trap SIGKILL. Your only option would be to monitor it from another process.
# 3  
you are right...i sudn't trap the kill, but what about other signals, how can i catch .....thru trap....in bash

i am doing following

function trap_cmd {
echo "It's wrong way to stop the process."
exit 2
}


trap 'trap_cmd' 1 2 3 4 5 6 7 8 10 12 13 14 15 20

but even though CTRL-C,Z ..... it's not going to echo me It's wrong way to stop the process. Smilie

so kindly suggest....for bash.
# 4  
works in bash 2.05
# 5  
Unless of course you are doing something strange like piping the output of a function, in which case there will be strange behavior becasue of the focred subshell.
# 6  
hey buddies, thanx a lot....
i found the problem, the thing is TRAP is not yet installed...in my box...

i need further assistance from your end, i.e.
1 I would like to install the TRAP in my box,
>The steps, from where should i get the utility, and instruction
manual from your side........can i get it ????

2 This question is the silly one, but >how to know which version of
bash i am working ????


Kindly assist ....
# 7  
Quote:
Originally Posted by manas_ranjan
hey buddies, thanx a lot....
i found the problem, the thing is TRAP is not yet installed...in my box...

i need further assistance from your end, i.e.
1 I would like to install the TRAP in my box,
>The steps, from where should i get the utility, and instruction
manual from your side........can i get it ????

2 This question is the silly one, but >how to know which version of
bash i am working ????


Kindly assist ....
One more thing my box is Linux 2.6.9
Login or Register for Dates, Times and to Reply

Previous Thread | Next Thread
Thread Tools Search this Thread
Search this Thread:
Advanced Search

Test Your Knowledge in Computers #266
Difficulty: Easy
In 1952, Alan Turing was prosecuted for homosexual acts a criminal offense in the UK and accepted chemical castration treatment as an alternative to prison.
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Crashing machins at ESXI-6 killed by TERM signal

Hi, i have 2 machines in ESXI6 that both made a restart at the same time but no errors from ESXI side. one machine with Centos 6.6 and one with centos 7 same log at the Dmesg: please help me find a lead what could made this ? Mar 17 20:20:28 pbxnl-b-sales-ru-ua init: tty (/dev/tty1) main... (2 Replies)
Discussion started by: batchenr
2 Replies

2. Shell Programming and Scripting

Quiting running process without catching TRAP signal

Hi, I would like to ask, if is it possible to quit running loop in the script any other way than catching the trap signal. Ctrl-C ends only current running instance of process but not whole script. Any clues? (3 Replies)
Discussion started by: smoofy
3 Replies

3. Linux

Problem with dovecot (Killed with signal 15)

hey, i have been facing a very fatel error with dovecot.. i am getting this error in my dovecot.log file dovecot: Feb 13 15:21:02 Fatal: chdir(/var/mail/folders/user1) failed with uid 1001: Permission denied dovecot: Feb 13 15:21:02 Error: child 18732 (imap) returned error 89 dovecot: Feb... (3 Replies)
Discussion started by: htshshrm2
3 Replies

4. Shell Programming and Scripting

How trap a signal in shell script?

Hi , i have a scenario where...i have to put a check where if script is executing more than 15mins i have to kill that script and n retry again 2nd time. i this case i can use background process to do it but i feel trap will be the efficent way to do so... but i dont know much about it... (1 Reply)
Discussion started by: crackthehit007
1 Replies

5. Shell Programming and Scripting

Record the Signal Type or Number in Bash Trap function

In my Bash script I have an exit/cleanup function in a trap statement like: trap exitCleanup 1 2 3 6 15 25 Is there anyway to capture which signal # has occurred to record in a log file. Please note I am trying to avoid something like: trap 'mySignal=1; exitCleanup' 1 trap... (1 Reply)
Discussion started by: ckmehta
1 Replies

6. Shell Programming and Scripting

How to Trap kill -9 signal

I just want to trap kill -9 signal issued by any of user from any terminal and just capture that user terminal who had raised this kill -9 command (1 Reply)
Discussion started by: puneet.goel
1 Replies

7. Shell Programming and Scripting

Killed by signal 15.

Hi all I have Master script, Main script ,and 4 Child script. Master.sh #!/bin/bash /export/home/user/Main.shMain.sh #!/bin/bash /export/home/user/Child1.sh & /export/home/user/Child2.sh & /export/home/user/Child3.sh & /export/home/user/Child4.sh &I run only Master.sh script... (1 Reply)
Discussion started by: almanto
1 Replies

8. UNIX for Dummies Questions & Answers

trap signal on user logout ?

hi all , I want to execute a script on the user logout(using gnome environment). Is ther any way to execute it through TRAP stmt? (2 Replies)
Discussion started by: harsha10
2 Replies

9. Shell Programming and Scripting

trap signal for enter key

hi , What is the trap signal for "ENTER key"? (4 Replies)
Discussion started by: Sreejith_VK
4 Replies

10. Shell Programming and Scripting

Fmli Signal/trap

Does anyone know how to program signals in fmli? My fmli script goes in loop when the telnet session is closed. When I start the script from the prompt the issue do not happen. But when it is started by the login process it hags. That's why I want to program the SIGHUP to exit/finish the script.... (0 Replies)
Discussion started by: Marcos Brito
0 Replies

Featured Tech Videos