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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 DEBIAN

rpld-store

rpld-*(1)					       System User's Manual: rpld-deprecated						 rpld-*(1)

NAME

       rpld-deprecated - Deprecated RoarAudio PlayList Daemon control programs

SYNOPSIS

       rpld-play

       rpld-stop

       rpld-next [--ifcurple PLE]

       rpld-prev

       rpld-addplaylist PLI

       rpld-delplaylist PLI

       rpld-store

DESCRIPTION

       The  RoarAudio  PlayList  Daemon is a daemon which manages playlists and can play files or streams from those lists using a RoarAudio Sound
       Server.

       This is a set of deprecated tools to do simple control of the server.  All those tools has be replaced by rpld-ctl(1).

       The following tools are deprecated:

       rpld-play
	      Start playback if not yet started.

	      Replaced by: rpld-ctl play

       rpld-stop
	      Stop playback.

	      Replaced by: rpld-ctl stop

       rpld-next [--ifcurple PLE]
	      Skip current song.

	      if --ifcurple and a PLE is given the song is only skiped if the currently played song matches the given PLE.

	      This tool has only been deprecated in case --ifcurple is not used.  Replaced by: rpld-ctl next

       rpld-prev
	      Go back to previous song.

	      Replaced by: rpld-ctl prev

       rpld-addplaylist PLI
	      Add playlist with name PLI.

	      Replaced by: rpld-ctl addplaylist PLI

       rpld-delplaylist PLI
	      Delete playlist PLI.

	      Replaced by: rpld-ctl delplaylist PLI

       rpld-store
	      Store current state to disk.

	      This tool should not be needed to be called by a user at all for normal use cases.

	      Replaced by: rpld-ctl store

SEE ALSO

       rpld-tools(1), rpld(7), RoarAudio(7).

HISTORY

       For history information see RoarAudio(7).

rpld-deprecated 						     May 2012								 rpld-*(1)
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