Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Kill child processes, when parent is "bash"
Top Forums UNIX for Dummies Questions & Answers Kill child processes, when parent is "bash" Post 302376862 by teras on Wednesday 2nd of December 2009 01:20:00 PM
Old 12-02-2009
Error Kill child processes, when parent is "bash"
Consider this simple command line
Code:
bash -c  'echo $$ ; sleep 10000'

This will print the newly created bash PID and sleep for a long time.
If I go to another terminal and do something like
Code:
ps -flax | grep [s]leep

I'll see something like
Code:
501 92418 91910   0   0:00.00 ttys000    0:00.00 bash -c echo $$ ; sleep 10000                                       4002  31  0    75964    708 -      S+   c8be82c
501 92419 92418   0   0:00.00 ttys000    0:00.00 sleep 10000                                                         4002  31  0    75412    380 -      S+   affa338

If I do kill then the parent (bash) process
Code:
kill 92418

then the child process (sleep) is not killed, although bash got killed

How do I kill the whole tree?
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

kill parent and child

Hello all, I have gone through the search and looked at posting about idle users and killing processes. Here is my question I would like to kill an idle user ( which I can do) but how can I asure that all of his process is also killed whit out tracing his inital start PID. I have tried this on a... (4 Replies)
Discussion started by: larry
4 Replies

2. UNIX for Advanced & Expert Users

"kill -14 pid" doesn't works on all processes !!

If I try to run "kill -14 pid", some processes in my application get terminated , while some keeps running. If SIGALRM signal is sent, they should make an exit. What's the reason any process keeps on running. (1 Reply)
Discussion started by: poojac
1 Replies

3. Programming

"No child processes" and waitpif

Hi everybody, i'm using a signal handler for the SIGCHLD signal. void InstallNewSigChldHandler() { struct sigaction act; struct sigaction oldAct; act.sa_handler = CallWaitChildProcess; sigemptyset(&act.sa_mask); act.sa_flags = SA_NOCLDSTOP; if... (5 Replies)
Discussion started by: Zipi
5 Replies

4. AIX

Typing "bash" at the command line spawns two bash processes

Server: IBM p770 OS: AIX 6.1 TL5 SP1 When one of our develoeprs types "bash" on the command line to switch shells, it hangs. For some reason, two bash processes are created....the first bash process spawns a second bash process in the same console, causing a hang. Anyone have any idea what... (2 Replies)
Discussion started by: wjssj
2 Replies

5. Shell Programming and Scripting

will child processes be created when executing "ps"?

Hi I'm trying to write some code to confirm there is only one running instance in memory like below: /usr/ucb/ps -auxww | egrep -v 'grep |vi |tail |more |cat ' | egrep ${SCRIPT_NAME} | egrep -v " \-h| \-help| \-v" But sometimes i found there is some child processes are are created as... (4 Replies)
Discussion started by: sleepy_11
4 Replies

6. Shell Programming and Scripting

need to kill a number of processes with name "XYZ" at a time using shell script

Hi, when i grep for the process "XYZ" , there will be some good number of processes with that name, i want to kill all the these processes at a time using shell script? Any help needed for this action. Thanks Regards, Anil (6 Replies)
Discussion started by: anilmanepu
6 Replies

7. Shell Programming and Scripting

forking a child process and kill its parent to show that child process has init() as its parent

Hi everyone i am very new to linux , working on bash shell. I am trying to solve the given problem 1. Create a process and then create children using fork 2. Check the Status of the application for successful running. 3. Kill all the process(threads) except parent and first child... (2 Replies)
Discussion started by: vizz_k
2 Replies

8. Shell Programming and Scripting

Kill Parent/ Child processes

I am trying to kill PIDs that are tied to a KSH "load_sqlplus" and I am using the below code LIST_PID=`ps -ef | grep -i "load_sqlplus" | grep -v grep | awk '{print $2}'` if ; then echo "Processes killed" "PID : " $LIST_PID kill -9 $LIST_PID else echo "Nothing to Kill" fi... (4 Replies)
Discussion started by: venky338
4 Replies

9. Shell Programming and Scripting

What is the use of "finger" command & how to use it to kill the online processes ?

Hi there, I am eager to know what exactly is the use of "finger" command & how to use it to kill the online processes ? :b: (1 Reply)
Discussion started by: abhijitpaul0212
1 Replies

10. Shell Programming and Scripting

Bash script - Print an ascii file using specific font "Latin Modern Mono 12" "regular" "9"

Hello. System : opensuse leap 42.3 I have a bash script that build a text file. I would like the last command doing : print_cmd -o page-left=43 -o page-right=22 -o page-top=28 -o page-bottom=43 -o font=LatinModernMono12:regular:9 some_file.txt where : print_cmd ::= some printing... (1 Reply)
Discussion started by: jcdole
1 Replies

LEARN ABOUT DEBIAN

irsend

IRSEND(1)							   User Commands							 IRSEND(1)

NAME

       irsend - basic LIRC program to send infra-red commands

SYNOPSIS

       irsend [options] DIRECTIVE REMOTE CODE [CODE...]

DESCRIPTION

       Asks the lircd daemon to send one or more CIR (Consumer Infra-Red) commands. This is intended for remote control of electronic devices such
       as TV boxes, HiFi sets, etc.

       DIRECTIVE can be:
	  SEND_ONCE	    - send CODE [CODE ...] once
	  SEND_START	    - start repeating CODE
	  SEND_STOP	    - stop repeating CODE
	  LIST		    - list configured remote items
	  SET_TRANSMITTERS  - set transmitters NUM [NUM ...]
	  SIMULATE	    - simulate IR event

       REMOTE is the name of a remote, as described in the lircd configuration file.

       CODE is the name of a remote control key of REMOTE, as it appears in the lircd configuration file.

       NUM is the transmitter number of the hardware device.

       For the LIST DIRECTIVE, REMOTE and/or CODE can be empty:

	  LIST	 ""    ""   - list all configured remote names
	  LIST REMOTE  ""   - list all codes of REMOTE
	  LIST REMOTE CODE  - list only CODE of REMOTE

       The SIMULATE command only works if it has been explicitly enabled in lircd.

       -h --help
	      display usage summary

       -v --version
	      display version

       -d --device
	      use given lircd socket [/var/run/lirc/lircd]

       -a --address=host[:port]
	      connect to lircd at this address

       -# --count=n
	      send command n times

EXAMPLES

	  irsend LIST DenonTuner ""
	  irsend SEND_ONCE  DenonTuner PROG-SCAN
	  irsend SEND_ONCE  OnkyoAmpli VOL-UP VOL-UP VOL-UP VOL-UP
	  irsend SEND_START OnkyoAmpli VOL-DOWN ; sleep 3
	  irsend SEND_STOP  OnkyoAmpli VOL-DOWN
	  irsend SET_TRANSMITTERS 1
	  irsend SET_TRANSMITTERS 1 3 4
	  irsend SIMULATE "0000000000000476 00 OK TECHNISAT_ST3004S"

FILES

       /etc/lirc/lircd.conf
	      Default lircd configuration file.  It should contain all the remotes, their infra-red codes and the corresponding timing	and  wave-
	      form details.

DIAGNOSTICS

       If lircd is not running (or /var/run/lirc/lircd lacks write permissions) irsend aborts with the following diagnostics:
       "irsend: could not connect to socket"
       "irsend: Connection refused" (or "Permission denied").

SEE ALSO

       The documentation for lirc is maintained as html pages. They are located under html/ in the documentation directory.

       lircd(8), mode2(1), smode2(1), xmode2(1), irrecord(1), irw(1), http://www.lirc.org.

irsend 0.9.0-pre1						   October 2010 							 IRSEND(1)
All times are GMT -4. The time now is 09:39 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy