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Top Forums Shell Programming and Scripting Output when killing a background process Post 302762383 by Chuck Morris on Monday 28th of January 2013 11:25:12 AM
Old 01-28-2013
Output when killing a background process

I played a bit around with the Terminal and I observed something.

When I start and kill a background process, there is some kind of output. After I invoked the command to start the process the first message "[1] 13063" is directly displayed. However, after killing the process, the second message "[1]+ Beendet sleep 20" is displayed only after I issued some other command.

Does anyone know the reason why this happens? In my case, why is "[1]+ Beendet sleep 20" displayed after I executed ps?

Code:
user@host:~$ sleep 20 &
[1] 13063
user@host:~$ ps
  PID TTY          TIME CMD
12372 pts/0    00:00:00 bash
13063 pts/0    00:00:00 sleep
13064 pts/0    00:00:00 ps
user@host:~$ kill 13063
user@host:~$ ps
  PID TTY          TIME CMD
12372 pts/0    00:00:00 bash
13065 pts/0    00:00:00 ps
[1]+  Beendet                 sleep 20
user@host:~$

PS: I use a German Ubuntu, so "Beendet" means "Terminated".
 

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PTS_SLEEP(1)						       AFS Command Reference						      PTS_SLEEP(1)

NAME
pts_sleep - Pauses for a few seconds SYNOPSIS
pts sleep [-delay] <# of seconds> [-cell] <cell name> [-noauth] [-localauth] [-force] pts sl [-d] <# of seconds> [-c] <cell name> [-n] [-l] [-f] DESCRIPTION
The pts sleep pauses for a specified number of seconds. The command can be run from the command line or interactively, although from the command line it's essentially equivalent to the sleep command. It is intended for use in interactive mode to pause for a few seconds between batch commands to allow the Protection Server to catch up. CAUTIONS
Prior to OpenAFS 1.4.5 and OpenAFS 1.5.23, the pts sleep command was only available on Unix or Linux and when OpenAFS was compiled with the supergroups option (disabled by default). As of OpenAFS 1.4.5 and 1.5.23, it is always available. OPTIONS
Although they have no effect, pts sleep takes the following standard pts options: -cell <cell name> Names the cell in which to run the command. For more details, see pts(1). -force Enables the command to continue executing as far as possible when errors or other problems occur, rather than halting execution at the first error. -help Prints the online help for this command. All other valid options are ignored. -localauth Constructs a server ticket using a key from the local /etc/openafs/server/KeyFile file. Do not combine this flag with the -cell or -noauth options. For more details, see pts(1). -noauth Assigns the unprivileged identity anonymous to the issuer. For more details, see pts(1). OUTPUT
This command produces no output. EXAMPLES
Here is an example of a pts interactive session: % pts interactive pts> sleep 5 pts> quit % SEE ALSO
pts(1), pts_interactive(1) COPYRIGHT
Copyright 2007 Jason Edgecombe <jason@rampaginggeek.com> This documentation is covered by the BSD License as written in the doc/LICENSE file. This man page was written by Jason Edgecombe for OpenAFS. OpenAFS 2014-04-08 PTS_SLEEP(1)
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