使用sed命令插入行

Question

文件中的文本如下所示：

[homes]
        comment = Home Directories
        path = 
        browseable = 
        writable = yes
        valid users = %S
        valid users = MYDOMAIN\%S

[printers]
        comment = All Printers
        path = /var/spool/samba
        browseable = no
        guest ok = no
        writable = no
        printable = yes

我希望输出为：

[homes]
        comment = Home Directories
        path = /data
        browseable = yes
        writable = yes
        valid users = %S
        valid users = MYDOMAIN\%S

[printers]
        comment = All Printers
        path = /var/spool/samba
        browseable = no
        guest ok = no
        writable = no
        printable = yes

我正在使用此命令：

sed -i "\#path# s#.*#& /data#" file

它会对路径所在文件中的所有位置进行更改。

谁能帮我这个？

Answer 1

sed '/path[ ]*=[ ]*$/s#$#/data#'

在具有任意空格的结尾行之前，在path =的行上，将结尾行$替换为替换字符串。