[英]Setting system volume in a bash script (in linux)
I need to set the system volume in a bash script, but I have no idea how to do this. 我需要在bash脚本中设置系统卷,但我不知道如何执行此操作。 Should I use alsactl
? 我应该使用alsactl
吗? Are there some values in /proc
or /sys
that I could use? 我可以使用/proc
或/sys
中的某些值吗?
You can also use pactl
. 你也可以使用pactl
。
pactl set-sink-volume 0 60% # set absolute
pactl set-sink-volume 0 +10% # set relative
pactl set-sink-mute 0 0 # unmute
In particular, the pactl set-sink-mute 0 0
unmute command works on my computer where amixer set Master unmute
doesn't. 特别是, pactl set-sink-mute 0 0
amixer set Master unmute
命令在我的计算机上工作,其中amixer set Master unmute
没有。
I've got a nice vol script in my ~/bin to help me do the trick ... 我的〜/ bin中有一个很棒的vol脚本来帮助我做到这一点......
#!/bin/sh
export XDIALOG_NO_GMSGS=1
case ${1} in
+|-) VOL=( $(amixer set Master 10dB${1} |tail -1|tr -d "[]") )
Xdialog --no-buttons --title "Vol" --infobox ${VOL[3]} 50x30+32+32 ;;
*[0-9]) VOL=( $(amixer set Master "${1}%" |tail -1|tr -d "[]") )
Xdialog --no-buttons --title "Vol" --infobox ${VOL[3]} 50x30+32+32 ;;
*) printf "Usage: vol [+]|[-]|[0-100]\n" >&2 ;;
esac
If you don't have Xdialog installed a simple echo ${VOL[3]} will give you some alsamixer feedback. 如果你没有安装Xdialog一个简单的echo $ {VOL [3]}会给你一些alsamixer反馈。
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