Question

#!/usr/bin/env zsh ./client localhost 5000 Bryan (my command)

我想检查我的命令参数是否正确，在脚本zsh中表示：

if 
first argument = int
second argument = int
third argument = string
fi

Answer 1

为了清楚起见，所有这些条件必须为真，以便脚本继续，是吗？另外，请注意＆＃34;字符串＆＃34;几乎意味着任何字符（A-Z，0-9，标点符号） - 控制字符以外的任何字符。假设是这样的，那么这样的事情：

  re='^[0-9]+$'
  echo " "
  echo "Parm 1: $1"
  if ! [[ "$1" =~ $re ]]; then
     echo "The first parameter must be an integer."
     exit 1
  fi

  echo " "
  echo "Parm 2: $2"
  if ! [[ $2 =~ $re ]]; then
     echo "The second parameter must be an integer."
     exit 2
  fi

  re='^[[:graph:]]+$'
  echo " "
  echo "Parm 3: $3"
  if ! [[ $3 =~ $re ]]; then
     echo "The third parameter must be an string."
     exit 3
  fi
  echo " "
  echo "Congratulations -- your parms are valid\!"
  echo " "

编辑：以下是一些示例运行：

~/test1$
~/test1$./tmp 123 456 abdc

Parm 1: 123

Parm 2: 456

Parm 3: abdc

Congratulations -- your parms are valid\!

~/test1$./tmp abc 123 456

Parm 1: abc
The first parameter must be an integer.
~/test1$./tmp 12b 123 abc

Parm 1: 12b
The first parameter must be an integer.
~/test1$./tmp 123 4h5 abc

Parm 1: 123

Parm 2: 4h5
The second parameter must be an integer.
~/test1$./tmp 123 jkl asdf

Parm 1: 123

Parm 2: jkl
The second parameter must be an integer.
~/test1$
~/test1$

希望这有帮助！

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