Shulou(Shulou.com)06/01 Report--

Visodu is used to edit sudo, such as vi. It comes with error checking. It must be capitalized. The change will take effect at that time.

Sudo-l look at the commands that can be executed by the current user-b execute commands in the background. Note that the password verified by sudo is the password of the current user.

To enter a password in sudo format:

User or% group or user category name loggable host = (transformable identity) executable command 1, executable command 2

Password-free sudo format:

User or% group or user category name loggable host = (changeable identity) NOPASSWD: executable command 1, executable command 2

Example:

Location 1, position 2, position 3, position 4.

Root ALL= (ALL) ALL

% wheel ALL= (ALL) NOPASSWD: ALL

Position 3 is used to write changeable identities, such as root

Host_Alias SERVER=no1,no2192.168.1.0/24 defines the host or network segment that can be logged in, and it is written in location 2. It is basically useless and generally uses ALL.

User_Alias ADMINS=liming,gem defines a user class alias, written in location 1

Cmnd_Alias SHUTDOWN=/usr/sbin/halt,/usr/sbin/shutdown defines the category name of the command, if you want to prohibit the execution of the command, add it before! To write the absolute path, write in position 4

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