暴力測試音頻硬體shell指令碼

以下Linux shell指令碼用來結音頻配件進行暴力測試。如有更好指令碼，歡迎提供。

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#! /bin/sh

while true

do

         aplay /root/test.wav & 

         sleep 8                 # sleep sometime < audio time length

         id=`ps | grep aplay | awk '{print $1}' | head -n 1`   # get the process id

        echo $id                # print the process id 

         kill -9 $id              # kill the aplay process
         sleep 20              # sleep 20 seconds
         sh /root/play.sh  # re-start this scripts

done

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註：此處為什麼用head，因為在buildroot下面，用ps | grep aplay會列印下面資訊：

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# ps | grep aplay
920 root aplay test.wav
922 root grep aplay

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