su

• Command Function
• Syntax
• Parameters
• Usage
• Example
• Output

Command Function

This command is used to switch the user.

Syntax

su [uid] [gid]

Parameters

Table 1 Parameter description

Usage

• The su command is used to switch to user root by default. The default value for both uid and gid is 0.
• If the uid and gid parameters are specified, this command can switch to the user with the specified uid and gid.
• If the input parameter is out of the range, an error message will be printed.

Example

Run su 1000 1000.

Output

Figure 1 Switching to the user whose uid and gid are both 1000