To check the disk space on a Solaris system, you can use the `df` command. This command will display the amount of free and used space on all mounted file systems. The output of the `df` command is divided into several columns, including the following:
- Filesystem: The name of the file system.
- Size: The total size of the file system in blocks.
- Used: The number of blocks that are currently being used.
- Avail: The number of blocks that are still available.
- Use%: The percentage of the file system that is currently being used.
- Mounted on: The directory where the file system is mounted.
The `df` command can be used to check the disk space on a single file system or on all mounted file systems. To check the disk space on a single file system, specify the name of the file system as an argument to the `df` command. For example, to check the disk space on the `/home` file system, you would use the following command: