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Full Discussion: Bash Question: HowTo Exit Script with User Input While Process is Running Mid-Loop?
Top Forums Shell Programming and Scripting Bash Question: HowTo Exit Script with User Input While Process is Running Mid-Loop? Post 302891284 by hilltop_yodeler on Tuesday 4th of March 2014 06:48:56 PM
Old 03-04-2014
Bash Question: HowTo Exit Script with User Input While Process is Running Mid-Loop?
Hi, I have written a script that allows me to repetitively play a music file $N times, which is specified through user input. However, if I want to exit the script before it has finished looping $N times, if I use CTRL+c, I have to CTRL+c however many times are left in order to complete the loop. For instance, if I specified that the song is to repeat 5 times, if during the first iteration through the loop, if I use CTRL+c to exit the script, I will have to press CTRL+c four more times before the script will terminate.

My objective is to be able to type 'q' or some character in order to quit the process. I have found limited information about this topic online, and what I have found has not worked for me.

Although my script provides more options than what is listed below, here it is in its most basic form (note - I'm using mplayer to play the audio file):

Code:
#!/bin/bash

echo -n "Enter the name of the song that you would like to play: "
read fileName
echo ""

echo -n "How many times would you like to repeat the song? "
read num
echo ""

for ((i=1; i<= $num; i++))
    do mplayer $fileName
done

Does anyone have any recommendations on how I can exit from the script using keyboard input in such a way that I'm not stuck in the loop and that the script actually terminates?

Thank you!
 

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LEARN ABOUT SUSE

xmms2-et

XMMS2-ET(1)						      General Commands Manual						       XMMS2-ET(1)

NAME

       xmms2-et - transmits an anonymous informative packet to the XMMS2 team on each song change

SYNOPSIS

       xmms2-et

DESCRIPTION

       XMMS2  is  a redesign of the XMMS (http://www.xmms.org) music player. It features a client-server model, allowing multiple (even simultane-
       ous!) user interfaces, both textual and graphical. All common audio formats are supported using plugins. On top of this, there is a  flexi-
       ble media library to organize your music.

       xmms2-et  is the ET Phone Home Client for XMMS2.  xmms2-et is designed to transmit a packet of information to the XMMS2 team whenever a new
       song is played. The packet is anonymous and does not contain metadata about the song being played. The specifics of what data is  transmit-
       ted to the XMMS2 team can be found in the ET PACKET section of this manual page.

       xmms2-et  is  used  for release engineering by the XMMS2 team. During a release cycle, the usage of various plugins, operating systems, and
       XMMS2 components is collected from data transmitted by the xmms2-et client. A release is made when sufficient testing has occured as deter-
       mined by the number of related xmms2-et packets that the XMMS2 team has received.

ET PACKET

       The following data is transmitted with every packet transmitted by xmms2-et:

       XMMS2-ET status
	      Begins  XMMS2-ET packets; status gives a descriptive message denoting what this packet is about. (e.g. Clean shutdown, Unclean shut-
	      down, New media)

       version=version
	      contains the version of the XMMS2 daemon

       system=os
	      contains the name and release of the operating system on which xmms2d is running

       output=output_plugin
	      contains the output plugin being used to playback audio by xmms2d

       starttime=start_time
	      contains the time at which the xmms2-et client was started

       uptime=xmms2d_uptime
	      contains the uptime of the xmms2-et client

       playlistloads=times
	      contains the number of times a playlist has been loaded from the Media Library

       mlibresolves=times
	      contains the number of times that metadata has been resolved for media in the Media Library

       The following data is different for each song being played:

       decoder=plugin
	      contains the decoder plugin used to playback the last played song

       transport=plugin
	      contains the transport plugin used to read the last played song

       samplefmt:in=in_fmt
	      contains the sample format of the original audio file of the last played song

       samplefmt:out=out_fmt
	      contains the sample format that was sent to the output plugin for the last played song

       samplerate:in=in_rate
	      contains the sample rate of the original audio file of the last played song

       samplerate:out=out_rate
	      contains the sample rate that was sent to the output plugin for the last played song

       channels:in=number_in
	      contains the number of channels of the original audio file of the last played song

       channels:out=number_out
	      contains the number of channels that were sent to the output plugin for the last played song

ENVIRONMENTAL VARIABLES

       XMMS_PATH
	      The URL path to xmms2d.  See IPC SOCKET in xmms2d(8) for details of possible values for this variable

SEE ALSO

       xmms2(1), xmms2d(8), http://xmms2.xmms.org

HISTORY

       The XMMS2 Project was started by Tobias Rundstrom and Anders Gustafsson. It is developed with their lead by a small group  of  contributers
       from all over the world.

AUTHOR

       This manual page was written by Alexander Botero-Lowry <alex@foxybanana.com>

																       XMMS2-ET(1)
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