how to kill the current app thats running

[user222]

is there a keystroke that will kill the current apps that running in the console (its not [Ctrl-C], because other apps can override it) is there one that other apps *cant* override???

[Dolda2000]

There's no keystroke that sends the KILL signal, but Ctrl+\ sends QUIT, which program more seldomly override, and Ctrl+Z puts the current job in the background. After having put it in the background, you can run "jobs -l" to find out its PID and then kill it manually with a kill signal.

[copycon]

First you have to find the pid for the running proccess.
You do this with this command from either a terminal window in the GUI or at the prompt in a true terminal.

Use this one in a terminal window as you can scroll up and down.

linux:/ # ps -aux

If you are in a true terminal you will need to pipe the out put to another program i.e. less so you can search it.

linux:/ # ps -aux | less

You will get output like this.

linux:/ # ps -aux
Warning: bad syntax, perhaps a bogus '-'? See http://procps.sf.net/faq.html
USER       PID %CPU %MEM   VSZ  RSS TTY      STAT START   TIME COMMAND
root         1  0.0  0.0   588  240 ?        S    Nov08   0:05 init [5]
root         2  0.0  0.0     0    0 ?        SN   Nov08   0:00 [ksoftirqd/0]
root         3  0.0  0.0     0    0 ?        S<   Nov08   0&#58;00 &#91;events/0&#93;
root         4  0.0  0.0     0    0 ?        S<   Nov08   0&#58;00 &#91;kblockd/0&#93;
root        26  0.0  0.0     0    0 ?        S    Nov08   0&#58;00 &#91;kapmd&#93;
root        28  0.0  0.0     0    0 ?        S<   Nov08   0&#58;14 &#91;pdflush&#93;
root        29  0.0  0.0     0    0 ?        S<   Nov08   0&#58;08 &#91;pdflush&#93;
root        31  0.0  0.0     0    0 ?        S<   Nov08   0&#58;00 &#91;aio/0&#93;
root        30  0.0  0.0     0    0 ?        S    Nov08   0&#58;11 &#91;kswapd0&#93;
root       187  0.0  0.0     0    0 ?        S    Nov08   0&#58;00 &#91;kseriod&#93;

In order to kill the process you must be the owner of the process or root and know pid all of which can be identified from the above information. Also before you kill a process you should make sur you know what that process is doing i.e. you would not kill init as that would be seriously detrimental to the system continuing to run.

This is the command you would use to kill a certain process.

kill "pid #"

If the command is stubborn and still won't die you can force it like this however if it won't die from the first one there maybe a good reason do some more research on the process before just resorting to forcing it.

kill -9 "pid #"

Hope this helps

[user222]

okay, i got back to the command line, but how do i resume the suspended process???

[Dolda2000]

If you mean a process that you suspended with Ctrl+Z, the shell command `fg' should get it back for you. You can have several suspended processes at the same time -- use the `jobs' command to list them. The `bg' and `fg' commands can make them run in the foreground/background (only one can run in the foreground, of course), and kill can kill any of them.

[jrv2kgt-s]

is there a keystroke that will kill the current apps that running in the console (its not [Ctrl-C], because other apps can override it) is there one that other apps *cant* override???

Here is another way to aquirer the PID of a runaway process and successfully kill it using the pipe and grep commands.

First query the stale "xine" process in a xterm.

[jon@raptor jon]$ ps -elf | grep xine

Your output should echo back with something similar to this.

5 S root       894     1  0  78   0    -   530 schedu Nov18 ?        00:00:00 xinetd -stayalive -reuse -pidfile /var/run/xinetd.pid
0 S jon      13753  1360  1  75   0    - 45950 schedu 13:36 pts/2    00:00:00 xine
0 S jon      13772 13721  0  75   0    -   892 pipe_w 13:37 pts/7    00:00:00 grep xine

Notice how this instance only three processes were queried instead of a list running of processes. By using this technique should make it easier to locate the process that you are looking for.Once that you have identified the stale "xine" process you can then go ahead and kill the process in the same manner that "Copycon" performed.

[sheds]

Here is how:

1. <Ctrl><Alt><Esc>
2. A skull-like mouse pointer appears.
3. Click on the app you want to terminate.[/url]

[copycon]

The problem with using Ctrl+Alt+Esc is that sometimes that does not actually kill the process it sometimes only kills the window the process is using leaving the stalled process running in the background using resources.

[sheds]

Yeah, someone wrote exactly that too. I read that the right way to do it is with $kill PID, on a terminal. I tested it and i works, typing top to find out which apps are running.

[user222]

There's no keystroke that sends the KILL signal, but Ctrl+\ sends QUIT, which program more seldomly override, and Ctrl+Z puts the current job in the background. After having put it in the background, you can run "jobs -l" to find out its PID and then kill it manually with a kill signal.

[Ctrl-Z] can still be overriden by other apps, for example, "twin"; "ytree" and "setedit"