计时Shell脚本

usage()

{

echo "回车输出当前已用时间"

echo "Ctrl+C结束计时"

}



print()

{

now=$(date "+%s")

time=$((now-start))

minute=$((time/60))

second=$((time-minute*60))



if [ $minute -eq 0 ]

then

echo -n $second秒

else

echo -n $minute分

echo -n $second秒

fi

}



usage

start=$(date "+%s")

trap 'echo; print; echo; exit;' 2



while read

do

print

done