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https://github.com/FunKey-Project/FunKey-OS.git
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29 lines
538 B
Bash
Executable File
29 lines
538 B
Bash
Executable File
#!/bin/sh
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VOLUME_FILE=/etc/current_volume
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VOLUME_DEFAULT_VALUE=50
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# Check args
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if [ ${#} -ne 0 ]; then
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echo "Usage: $(basename ${0})"
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exit 1
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fi
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# Sanity check: File does not exist
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if [ ! -f ${VOLUME_FILE} ]; then
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rw
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echo ${VOLUME_DEFAULT_VALUE} > ${VOLUME_FILE}
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ro
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fi
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# Sanity check: Check if integer
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volume=$(cat "${VOLUME_FILE}")
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if ! [ ! "${volume}" -ne "${volume}" ] 2> /dev/null; then
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rw
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echo ${VOLUME_DEFAULT_VALUE} > ${VOLUME_FILE}
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ro
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volume=${VOLUME_DEFAULT_VALUE}
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fi
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echo ${volume}
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exit 0
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