Startup volume control

[Hairyplotter]

Sometimes while listening to music or watching a movie on my laptop, I will shut the computer down and forget to lower the volume.

So I wrote a small script and placed it in ~/.kde/Autostart to lower the volume to 30 if the current volume is higher than 30.

#!/bin/bash

# Is the current volume level greater than 30
if [ `aumix -q | grep vol | cut -d' ' -f3` -gt 30 ]; then
# YES, so lower the volume to 30
  aumix -v 30
fi

[DeBaas]

Handy little jewels

[musonio]

Thanks. Very useful for me.

[canajun]

HUH 

It sounds useful, but how about a step by step ?

Apparently i have to copy and paste this into something, but what, and what do I save it as?

Is "fi" part of the script, or is that your sig ?

[dixonpete]

Coincidentally yesterday I discovered that in SMPlayer you can set the starting volume via Options/General/Audio. Great for late night movie watching in an apt.

[Was_Just19]

Coincidentally yesterday I discovered that in SMPlayer you can set the starting volume via Options/General/Audio. Great for late night movie watching in an apt.

I have an alsaplayer link created to play at a particular volume and directly to my wireless headset.
Just some minor options in the command determines what hardware it sends the sound to and at what volume.

I find it useful.

[Hairyplotter]

HUH 

It sounds useful, but how about a step by step ?

Apparently i have to copy and paste this into something, but what, and what do I save it as?

Is "fi" part of the script, or is that your sig ?

1) Open up kwrite and paste the following:

Code: [Select]

#!/bin/bash
if [ `aumix -q | grep vol | cut -d' ' -f3` -gt 30 ]; then
  aumix -v 30
fi

2) Select "File" -> "Save As" then type in: ~/.kde/Autostart/volume.sh
3) Click "Save"
4) Open Konsole then type: chmod u+x ~/.kde/Autostart/volume.sh
5) Press <enter> and your all set.

Depending on how loud you want the volume to be by default, you can adjust it by changing the 30 in line 2 and 3 of the code above.

[canajun]

1) Open up kwrite and paste the following:

Code: [Select]

#!/bin/bash
if [ `aumix -q | grep vol | cut -d' ' -f3` -gt 30 ]; then
  aumix -v 30
fi

2) Select "File" -> "Save As" then type in: ~/.kde/Autostart/volume.sh
3) Click "Save"
4) Open Konsole then type: chmod u+x ~/.kde/Autostart/volume.sh
5) Press <enter> and your all set.

Depending on how loud you want the volume to be by default, you can adjust it by changing the 30 in line 2 and 3 of the code above.

thanks !! 

[gseaman]

Is "fi" part of the script, or is that your sig ?

I think "fi" is short for endif.

Galen

[Woo58]

I tried this script but could not get this to work?

I found that running the script with the volume set at 58% the line

if [ `aumix -q | grep vol | cut -d' ' -f3` -gt 30 ]; then

cut kept returning ' 58, Integer expected'

changing the line to

if [ `aumix -q | grep vol | cut -d"," -f2` -gt 30 ]; then

worked as expected.

Looks like the " " delimiter in cut was causing ',' to end up in the result.

Anyone else had this happen?

[Hairyplotter]

I found a cleaner way of doing it.

Code: [Select]


#!/bin/bash
if [ `aumix -q | grep vol | awk '{ print $NF }'` -gt 30 ]; then
  aumix -v 30
fi



[dixonpete]

I figured the fi was joke but it really is a part of the Bash language. Go figure.

http://tldp.org/LDP/Bash-Beginners-Guide/html/sect_07_01.html

I found a cleaner way of doing it.

Code: [Select]


#!/bin/bash
if [ `aumix -q | grep vol | awk '{ print $NF }'` -gt 30 ]; then
  aumix -v 30
fi



[Hairyplotter]

If ends with fi and case ends with esac.

[Woo58]

Could not get this to work?

Code: [Select]


#!/bin/bash
if [ `aumix -q | grep vol | awk '{ print $NF }'` -gt 30 ]; then
  aumix -v 30
fi



The result of awk '{print $NF}' is 'P' so gives "Integer Expected Error"

I modified the code as follows to compare strings, this now works.

Code: [Select]

#!/bin/bash
if [ `aumix -q | grep vol | awk '{ print $3 }'` \> "30," ]; then
  aumix -v 30
fi

[Was_Just19]

I don't understand ........ why not just set the volume to 30 or 20 or whatever regardless what level it was at when shutdown?