面试题答案
一键面试#!/bin/bash
start_time=$(date +%s%3N)
ls
end_time=$(date +%s%3N)
elapsed_time=$((end_time - start_time))
echo "执行时间:${elapsed_time} 毫秒"
#!/bin/bash
start_time=$(date +%s%3N)
ls
end_time=$(date +%s%3N)
elapsed_time=$((end_time - start_time))
echo "执行时间:${elapsed_time} 毫秒"