55 lines
1.2 KiB
Bash
55 lines
1.2 KiB
Bash
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#!/bin/bash
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VERSION=01
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if [ "$1" == "--help" ]; then
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echo "
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MacBook LED indicator (v$VERSION) Jason Parekh <jasonparekh@gmail.com>
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Put that SPDIF-out to use! http://jasonparekh.com/linux-on-macbook
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Usage: $0 <type> [dev]
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type Choose between 'disk' (default) or 'net' indicator
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dev Use the 'dev' device (eg: 'sda1' or even just 'sda' for all partitions)
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Examples:
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$0 Monitors all block devices activity (disk and CD/DVD drives)
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$0 disk sda Monitors all disk drives activity
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$0 net eth0 Monitors LAN activity
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$0 net Monitors all network activity (WARNING: wlan0 will pickup ANY wifi activity)
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$0 net ath0 Monitors wireless activity
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"
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exit
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fi
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STATS_FILE="/proc/diskstats"
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if [ "$1" == "net" ]; then
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STATS_FILE="/proc/net/dev"
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fi
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STATS_CMD="cat $STATS_FILE"
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if [ "$2" != "" ]; then
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STATS_CMD="grep $2 $STATS_FILE"
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fi
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renice 19 -p $$ >/dev/null 2>&1
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while [ 1 ]; do
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CUR_STATS=`$STATS_CMD`
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if [ "$CUR_STATS" != "$LAST_STATS" ]; then
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if [ "$LAST_OP" != "ACTIVE" ]; then
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amixer set IEC958 on >/dev/null 2>&1
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fi
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LAST_OP="ACTIVE"
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else
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if [ "$LAST_OP" != "IDLE" ]; then
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amixer set IEC958 off >/dev/null 2>&1
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fi
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LAST_OP="IDLE"
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fi
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LAST_STATS="$CUR_STATS"
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sleep 0.2
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done
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