Question

我有一个脚本，询问用户以下问题：

read -p "Input time duration of simulation in HH:MM:SS format" -e Time

现在我如何确保用户输入$ Time的正确表格在实际使用变量$ Time之前？

Answer 1

我假设您需要检查小时＆lt; 24分钟＆lt; 60秒，＆lt; 60？

read -p "Input time duration of simulation in HH:MM:SS format " -e Time

while :; do
  if [[ $Time =~ ^([0-9]{2}):([0-9]{2}):([0-9]{2})$ ]]; then
    if (( BASH_REMATCH[3] < 60 ))\
       && (( BASH_REMATCH[2] < 60 ))\
       && (( BASH_REMATCH[1] < 24 )); then
       break
    fi
  fi
  read -p "Wrong format. Please use the HH:MM:SS format " -e Time
done

# Do something with $Time

Answer 2

你可以这样测试：

if [[ $Time =~ ^[0-9][0-9]:[0-9][0-9]:[0-9][0-9]$ ]]; then
    echo "format is ok"
else
    echo >&2 "format is wrong"
fi

确保bash中的时间格式正确

2 个答案: