Which command is commonly used to check the current disk usage in a directory?

The command commonly used to check the current disk usage in a directory is "du -sh." This command stands for "disk usage" and is specifically designed to summarize disk space usage of files and directories. The "-s" option stands for "summarize," which means it provides a total usage for the specified directory rather than listing individual files, while the "-h" option means "human-readable," making the output easier to understand by displaying sizes in a format that is easy to read, such as KB, MB, or GB.

This makes "du -sh" a practical choice when you want to quickly assess how much disk space a directory is consuming, without getting bogged down in the details of its contents.