linux scripting file check if this the last added user

i want to say that he is not the last user that is created. Or that he is the last user that is created.

我想说他不是最后创建的用户。或者他是最后创建的用户。

this is my script i've created:

这是我创建的脚本:

#!/bin/bash
$laatst = $(cut -d: -f1 /etc/passwd)
$laatste= $(tail -1 $laatst)

if [ $user = $laatste]
then echo "i am $user and i am created at last"
else echo "i am $user and i am not created as last"
echo "the last created user is $laatste"
fi

error: ./lastuser.sh: line 5: =root: command not found

错误:./lastuser.sh:第5行:= root:找不到命令

does anyone know why this doesn't get the last added user name and some other errors?

有谁知道为什么这不会得到最后添加的用户名和一些其他错误?

1 个解决方案

#1

There is no space before or after the '='. Also when setting a variable there is no dollar sign in front of the variable.

'='之前或之后没有空格。此外,在设置变量时,变量前面没有美元符号。

Also the evaluation of the string is what you are looking for and that is what is applied to your tail command.

此外,字符串的评估是您正在寻找的,这是应用于您的tail命令。

your if check needs spaces.

如果检查需要空格。

I don't see $user ever getting initialized to anything.

我没有看到$ user被初始化为任何东西。

#!/bin/bash

laatst='cut -d: -f1 /etc/passwd'
laatste=$($laatst | tail -1)
if [[ $user == $laatste ]]
then echo "i am $user and i am created at last"
else 
    echo "i am $user and i am not created as last"
    echo "the last created user is $laatste"
fi

#1