System Info
df
Report filesystem disk space usage for mounted filesystems.
Synopsis
syntax
df [OPTION]... [FILE]...
Examples
Show disk usage in human-readable format
df -h
Show with filesystem types
df -hT
Check specific mount point
df -h /home
Check inode usage
df -i
Common options
| Flag | Description |
|---|---|
| -h | Human-readable sizes |
| -T | Show filesystem type |
| -i | Show inode usage |
| -x | Exclude filesystem type |
| --total | Show grand total |
About df
The `df` command report filesystem disk space usage for mounted filesystems. System information commands provide insight into hardware, kernel, memory, disk, and user session details.
These are typically the first tools you reach for when diagnosing system problems, capacity planning, or auditing a server's configuration. They work across most Linux distributions without additional packages.
The command accepts 5 commonly used flags shown above, though the full set of options is available in the man page (`man df`). The 4 examples on this page cover typical real-world usage patterns that you can copy and adapt for your own workflows.
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