21 lines
541 B
Bash
Executable File
21 lines
541 B
Bash
Executable File
#!/bin/bash
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mod_bl () {
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# Customizable configuration constants
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local -r DEFAULT_PRE=' '
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local -r DEFAULT_SUF='%'
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local -r pre="${1-${DEFAULT_PRE}}"
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local -r suf="${2-${DEFAULT_SUF}}"
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local bl_file bl max_bl_file max_bl
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bl_file="$(find /sys/class/backlight/*/brightness | head -n 1)"
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max_bl_file="$(dirname "${bl_file}")/max_brightness"
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read -r bl < "${bl_file}"
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read -r max_bl < "${max_bl_file}"
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# Use printf to do floating point arithmetic
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printf '%b%3.0f%b' "${pre}" "$((bl * 1000 / max_bl))e-1" "${suf}"
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}
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