Which command is used to display disk space usage for file systems in Linux?

The command used to display disk space usage for file systems in Linux is "df -h." This command stands for "disk free" and provides information on the amount of disk space used and available on all mounted file systems. The "-h" flag stands for "human-readable," meaning the command will display the sizes in a format that's easy for users to understand, such as KB, MB, or GB, rather than in raw block counts.

Using "df -h" is particularly useful for system administrators and users who need a quick and comprehensive overview of their system's disk usage, especially when managing resources or troubleshooting storage issues. It helps users identify if any file systems are nearing capacity, enabling them to take necessary actions to free up space or extend their storage resources.

In contrast, while "du -sh" provides disk usage for individual files and directories, it does not give an overview of the file systems. "lsblk" lists block devices and their mount points but does not show disk usage. "findmnt" is used to find and report mounted filesystems and their properties, but it is also not focused on displaying disk space usage.