bash 意外标记“then”附近的语法错误
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syntax error near unexpected token `then'
提问by Jone Jamson
I created a script that helps administrators add and remove users from text file instead of doing it manually. I ran into this error and i'm having trouble solving it.
我创建了一个脚本来帮助管理员从文本文件中添加和删除用户，而不是手动进行。我遇到了这个错误，我无法解决它。
[ec2-user@ip-172-31-15-55 ~]$ ./account-manager user add
./account-manager: line 21: syntax error near unexpected token `then'
./account-manager: line 21: ` then'
How could I fix this error?
我该如何解决这个错误？
#!/bin/bash
file=
action=
if [ -z "$file" ]
then
echo " Please enter a file with your users"
exit 0
fi
if [ -z "$action" ]
then
echo " Please define an account to remove or deleete"
exit 0
fi
for user in `cat $file`
do
if[ "$action" == "add" ]
then
echo adding user: $user
useradd $user -m -p password
fi
if[ "$action" == "remove" ]
then
echo removing user: $user
userdel -r $user
fi
done
回答by v7d8dpo4
You should add a space between ifand [in lines 20 and 25. Your code should be like this.
您应该在第 20 和 25 行之间if和[中添加一个空格。您的代码应该是这样的。
#!/bin/bash
file=
action=
if [ -z "$file" ]
then
echo " Please enter a file with your users"
exit 0
fi
if [ -z "$action" ]
then
echo " Please define an account to remove or deleete"
exit 0
fi
for user in `cat $file`
do
if [ "$action" == "add" ]
then
echo adding user: $user
useradd $user -m -p password
fi
if [ "$action" == "remove" ]
then
echo removing user: $user
userdel -r $user
fi
done
回答by Julian
Pay attention to spacing around your ifstatements, make use of a tool such as http://www.shellcheck.net/to understand where you might have made mistakes.
注意if语句周围的间距，使用诸如http://www.shellcheck.net/之类的工具来了解您可能出错的地方。
