system volume(system volume information怎么删除)

macOS下命令行 切换Mac的声音输出设备和控制音量大小

如何快速切换Mac的声音输出设备，可以直接点菜单栏的图标，或者按住Option键【一般按这个会有意外惊喜，比如按住Wi-Fi的图标之类的】，然后选择就可以了

对于键盘党来说可能觉得不够效果 ，所以我检索了下，有开源的方式可以实现，安装switchaudio-osx

Switch Audio Outputs with a Keyboard Shortcut on OS X

A command-line utility to switch the audio source on Mac OS X.

https://github.com/deweller/switchaudio-osx

http://apetronix.com/switch-audio-outputs-with-a-keyboard-shortcut-on-os-x/

➜ ~ brew install switchaudio-osx

Updating Homebrew...

==> Downloading https://homebrew.bintray.com/bottles/switchaudio-osx-1.0.0.catalina

######################################################################## 100.0%

==> Pouring switchaudio-osx-1.0.0.catalina.bottle.2.tar.gz

/usr/local/Cellar/switchaudio-osx/1.0.0: 8 files, 62.4KB

关于帮助：

Usage-----AudioSwitcher [-a] [-c] [-t type] [-n] -s device_name - **-a** : shows all devices - **-c** : shows current device - **-t** _type_ : device type (input/output/system). Defaults to output. - **-n** : cycles the audio device to the next one - **-s** _device_name_ : ts the audio device to the given device by name

比如我的设备如下：

➜ ~ SwitchAudioSource -a

External Microphone (input)

MacBook Pro Microphone (input)

External Headphones (output)

MacBook Pro Speakers (output)

当前连接的设备

➜ ~ SwitchAudioSource -a -c

MacBook Pro Speakers

切换到我的有线耳机上

➜ ~ SwitchAudioSource -a -c -s "External Headphones"

output audio device t to "External Headphones"

切换到我的Macbook Pro本上

➜ ~ SwitchAudioSource -a -c -s "MacBook Pro Speakers"

output audio device t to "MacBook Pro Speakers"

当然可以通过设置alias来快速切换

➜~ cat .zshrc|tail -n 4#➜~ SwitchAudioSource -a -c -s "External Headphones"#➜~ SwitchAudioSource -a -c -s "MacBook Pro Speakers"alias erji="/usr/local/bin/SwitchAudioSource -a -c -s "External Headphones""alias mac="/usr/local/bin/SwitchAudioSource -a -c -s "MacBook Pro Speakers""

顺带看下如何通过命令行来控制音量大小：

➜ ~ neofetch 'c. lex@Mac ,xNMM. ------- .OMMMMo OS: macOS Catalina 10.15.7 19H2 x86_64 OMMM0, Host: MacBookPro15,1 .;loddo:' loolloddol;. Kernel: 19.6.0 cKMMMMMMMMMMNWMMMMMMMMMM0: Uptime: 4 days, 17 hours, 30 mins .KMMMMMMMMMMMMMMMMMMMMMMMWd. Packages: 144 (brew) XMMMMMMMMMMMMMMMMMMMMMMMX. Shell: zsh 5.7.1;MMMMMMMMMMMMMMMMMMMMMMMM: Resolution: 1680x1050:MMMMMMMMMMMMMMMMMMMMMMMM: DE: Aqua.MMMMMMMMMMMMMMMMMMMMMMMMX. WM: Quartz Compositor kMMMMMMMMMMMMMMMMMMMMMMMMWd. WM Theme: Blue (Dark) .XMMMMMMMMMMMMMMMMMMMMMMMMMMk Terminal: iTerm2 .XMMMMMMMMMMMMMMMMMMMMMMMMK. Terminal Font: MesloLGSForPowerline-BoldItalic 17 kMMMMMMMMMMMMMMMMMMMMMMd CPU: Intel i7-8850H (12) @ 2.60GHz ;KMMMMMMMWXXWMMMMMMMk. GPU: Intel UHD Graphics 630, Radeon Pro 560X .cooc,. .,coo:. Memory: 25360MiB / 32768MiB设置音量大小方式如下：可以不用sudo的t Volume 3 - 10➜ ~ sudo osascript -e "t Volume 3"➜ ~ sudo osascript -e "t volume output volume 30"➜ ~ sudo osascript -e "t volume output volume 50➜ ~ osascript -e "get volume ttings"output volume:30, input volume:50, alert volume:100, output muted:fal➜ ~ osascript -e "t volume output volume 50"➜ ~ osascript -e "t volume output volume 60"设置静音开启和关闭➜ ~ osascript -e "t volume output muted true"➜ ~ osascript -e "t volume output muted fal"

反正是多一种方式。哈 就当学习了