How do you check disk space usage in Linux?

The command used to check disk space usage in Linux is commonly executed with "df -h." This command provides a report on disk space usage for file systems, presenting the available space, used space, and total space in a human-readable format (the "-h" flag allows for easier interpretation of sizes, using units like Megabytes and Gigabytes).

Using "df -h" is particularly useful for quickly assessing how much disk space is left and how much is already utilized across mounted file systems, making it an essential tool for system administrators when managing storage resources.

While "du -h" is related and is used to estimate file and directory space usage, it operates on specific files or directories rather than providing an overview of mounted file systems. The command "ls -l" lists files and directories with detailed information, such as permissions, sizes, and timestamps, but does not summarize disk usage. On the other hand, "free -m" is utilized to check memory usage, not disk space. Thus, "df -h" is the most appropriate choice for checking disk space utilization.