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a2query:tldr:304cf
The command "sudo a2query -s" is used to check the currently enabled sites on an Apache server.
Here's a breakdown of the command:
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"sudo" is a command that allows a user with administrative privileges (often called "superuser" or "root" privileges) to execute a command as another user, typically the root user. It provides elevated permissions to carry out system-level tasks.
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"a2query" is a command used on Linux systems with Apache installed. It is specifically used to query information about Apache configuration files and modules.
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"-s" is an option or flag used with the "a2query" command. In this case, the "-s" flag stands for "sites", indicating that we want to query information about enabled sites.
When you run the "sudo a2query -s" command, it will check the Apache configuration files and display a list of the currently enabled sites. The command requires administrative privileges (hence "sudo") because it accesses system-level configuration files.