bash - 追加 groupID newusers

Question

我有一个结构错误的文件，我使用 while..read 循环将其转换为正确的结构

userid1:john doe smith:group1
userid2:jane doe smith:group2
userid3:paul rudd :group2

到目前为止的代码:

while IFS=: read userid username; do 
        userid=`echo $username|cut -d ":" -f 1`
             echo "$userid:password:$username:/home/$userid/bin/bash";
        done <  users.txt > newusers.txt

这给了我这个输出，

userid1:password123:John Doe Smith:/home/userid1/bin/bash
userid2:password123:Jane Doe Smith:/home/userid2/bin/bash
userid3:password123:Paul Rudd:/home/userid3/bin/bash

现在我需要附加 uid(自动生成，所以空白)和 gid，不知道该怎么做，我已经有了用 2020 和 2040 创建的组。

期望的输出:

userid1:password123::2020:John Doe Smith:/home/userid1/bin/bash
userid2:password123::2040:Jane Doe Smith:/home/userid2/bin/bash
userid3:password123::2040:Paul Rudd:/home/userid3/bin/bash

干杯。

Answer 1

我认为您的代码可能如下所示:

while IFS=: read -r userid username group; do 
        if [ "$group" = "group1" ]; then
           groupid=2020
         elif [ "$group" = "group2" ]; then
           groupid=2040
         else
           echo "Unknown groupid"
           do something with error.
         fi
         echo "$userid:password123::$groupid:$username:/home/$userid/bin/bash";
done <  users.txt > newusers.txt