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getsebool – Query the boolean value of each rule in the SElinux policy

The getsebool command is a Linux utility that is used to query the boolean value of each rule in the SElinux policy. SElinux is a Linux kernel security module that provides a mechanism for enforcing access control policies on Linux systems. SElinux policies are defined using a set of rules, and the getsebool command can be used to query the boolean value of each rule in the policy.

Overview

The getsebool command is used to query the boolean value of each rule in the SElinux policy. The syntax for the command is as follows:

getsebool [OPTION]... [BOOLEAN]...

The OPTION argument specifies any options that you want to use with the command, while the BOOLEAN argument specifies the name of the boolean that you want to query.

For example, to query the boolean value of the httpd_can_network_connect rule in the SElinux policy, you would use the following command:

getsebool httpd_can_network_connect

This command will output either on or off, depending on the current boolean value of the httpd_can_network_connect rule.

You can also use the getsebool command to list all of the available booleans in the SElinux policy. To do this, you would use the following command:

getsebool -a

This command will output a list of all of the available booleans in the SElinux policy, along with their current boolean values.

Options

The following table lists all of the available options for the getsebool command:

Option Description
-h, --help Display a help message and exit.
-V, --version Display version information and exit.
-a, --all List all of the available booleans in the SElinux policy, along with their current boolean values.
-n, --name Display the name of the boolean, but do not display its current boolean value.
-C, --compare Compare the current boolean value of the specified boolean with its default value.
-F, --file Query the boolean value of the specified file context.
-P, --policy Query the boolean value of the specified policy.

Troubleshooting tips

If you are having trouble using the getsebool command, there are a few things that you can try:

  • Make sure that you are using the correct syntax for the command. The syntax for the command is getsebool [OPTION]... [BOOLEAN]....
  • Check the SElinux policy to make sure that the boolean that you are trying to query exists.
  • Make sure that you have the necessary permissions to query the SElinux policy. You may need to be logged in as the root user or have sudo privileges.

Notes

  • The getsebool command is part of the policycoreutils package, which is typically installed on most Linux systems by default.
  • The boolean values returned by the getsebool command are case-sensitive. This means that on and ON are not equivalent.
  • The getsebool command can be used in conjunction with other SElinux utilities, such as setsebool and semanage, to manage the SElinux policy on a Linux system.

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