OSX system volume (sound) GET / SET via Terminal / bash

Source: Coderwall.com

Manipulate the volume settings on an OSX machine via command line:

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Get volume

# Echos a number from 0 to 100
osascript -e ‘output volume of (get volume settings)’

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Set volume

# Where 50 is a number from 0 to 100
osascript -e ‘set volume output volume 50’

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Get mute state

# Echos a string of ‘true’ or ‘false’
osascript -e ‘output muted of (get volume settings)’

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Set mute state

# Where ‘true’ can be ‘true’ or ‘false’
osascript -e ‘set volume output muted true’

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