04-07-2010
@jgt
The script you post is terrifying, but I follow the basic reasoning. I would recommend that nobody runs that script on an operational system - especially one which has data.
Sorry, but it is scripts such as this which issue "kill -9" arbitarily actually cause the situation which we see with "who -d" in the original post.
If you were forced to issue a kill against orphan interractive process it should be "kill -15" or whatever "kill" signal is required by the application.
Never issue "kill -9" unless you are having trouble shutting a system down or encounter a process which is definitely stuck on impossible I/O.
Last edited by methyl; 04-07-2010 at 09:06 PM..
Reason: typo
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
suppose i want to display the child processess that are running at the background.how do u do it.
ps -ef shows both parent and child processess i need to see only the child processess.
cheers. (3 Replies)
Discussion started by: uni_ajay_r
3 Replies
2. Solaris
mqm 17700 16815 0 0:00 <defunct>
kill -9 does not work, even as root (10 Replies)
Discussion started by: csaunders
10 Replies
3. Shell Programming and Scripting
Hi,
i want to remove a certain pattern when i type pwd.
pwd will look like this:
..../....../....../Pat_logs/..../....../...../......
the dotted lines are just random directory names,
i want it to remove the "Pat_logs/...../....../....../" part
so for example:
... (8 Replies)
Discussion started by: a27wang
8 Replies
4. UNIX for Dummies Questions & Answers
Hi,
how to use "rm" to delete only files from year 2010 ?
Thank you. (2 Replies)
Discussion started by: big123456
2 Replies
5. Programming
it still display header and footer
header
SQL*Plus: Release 10.2.0.1.0 - Production on Mon Sep 24 13:41:51 2012
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production
With the Partitioning, Real... (0 Replies)
Discussion started by: ment0smintz
0 Replies
6. Shell Programming and Scripting
Hi,
I have some files with some extension e.g. abc.xml.REMOVE,xyz.xml,efg.xml.REMOVE .
I have to remove the .REMOVE extension. I can display it using the below script but cannot rename it.
ls -l|sed 's/\.REMOVE//'
How can I rename this?
Thanks in advance (7 Replies)
Discussion started by: babom
7 Replies
7. UNIX for Dummies Questions & Answers
Hi,
I just upgraded one my server to latest version RHEL, I have many users who will do SSH from another server. I wanted to update all of the users home directory and remove the security key. For example.
/home/XYZ/.ssh/known_hosts and remove this hostsname.
Please see below and advise.... (2 Replies)
Discussion started by: samnyc
2 Replies
8. Shell Programming and Scripting
Hi,
I have a file with contents.
file1:
<2013 tttaaa
abc123
<2013 gggdddd
<2013 sssssss
<2013 eeeee
I need to remove the lines which do not have the word "tttaaa"
can some one help ? (7 Replies)
Discussion started by: giri_luck
7 Replies
9. Shell Programming and Scripting
Hi,
I'm on AIX 5.2. I wrote a script that makes a traceroute to a host. The script works fine but each time it using the traceroute command its generate the 2 output lines.
this is the command in my script
traceroute -n -m 5 -w 2 $Host | grep 172 | awk '{print $2}' | tail -1
traceroute... (2 Replies)
Discussion started by: ce9888
2 Replies
10. Shell Programming and Scripting
Hi Gurus,
I have below files in one directory. the file name has date and time portion which is exactly the file be created. I need keep only lasted created file which is abc_20140101_1550 and remove rest of the file.
abc_20140101_1300
abc_20140101_1200
abc_20140101_1400
abc_20140101_1500... (2 Replies)
Discussion started by: ken6503
2 Replies
LEARN ABOUT XFREE86
preap
preap(1) User Commands preap(1)
NAME
preap - force a defunct process to be reaped by its parent
SYNOPSIS
preap [-F] pid...
DESCRIPTION
A defunct (or zombie) process is one whose exit status has yet to be reaped by its parent. The exit status is reaped via the wait(3C),
waitid(2), or waitpid(3C) system call. In the normal course of system operation, zombies may occur, but are typically short-lived. This may
happen if a parent exits without having reaped the exit status of some or all of its children. In that case, those children are reparented
to PID 1. See init(1M), which periodically reaps such processes.
An irresponsible parent process may not exit for a very long time and thus leave zombies on the system. Since the operating system destroys
nearly all components of a process before it becomes defunct, such defunct processes do not normally impact system operation. However, they
do consume a small amount of system memory.
preap forces the parent of the process specified by pid to waitid(3C) for pid, if pid represents a defunct process.
preap will attempt to prevent the administrator from unwisely reaping a child process which might soon be reaped by the parent, if:
o The process is a child of init(1M).
o The parent process is stopped and might wait on the child when it is again allowed to run.
o The process has been defunct for less than one minute.
OPTIONS
The following option is supported:
-F Forces the parent to reap the child, overriding safety checks.
OPERANDS
The following operand is supported:
pid Process ID list.
EXIT STATUS
The following exit values are returned by preap, which prints the exit status of each target process reaped:
0 Successfully operation.
non-zero Failure, such as no such process, permission denied, or invalid option.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWesu (32-bit) |
+-----------------------------+-----------------------------+
| |SUNWesxu (64-bit) |
+-----------------------------+-----------------------------+
SEE ALSO
proc(1), init(1M), waitid(2), wait(3C), waitpid(3C), proc(4), attributes(5)
WARNINGS
preap should be applied sparingly and only in situations in which the administrator or developer has confirmed that defunct processes will
not be reaped by the parent process. Otherwise, applying preap may damage the parent process in unpredictable ways.
SunOS 5.10 26 Mar 2001 preap(1)