| -a | Behave as though the options -m -, -n -, -r -, -s , and -v were specified. |
| -i | Write the kernel ident to standard output. |
| -m | Write the type of the current hardware platform to standard output. |
| -n | Write the name of the system to standard output. |
| -p | Write the type of the machine processor architecture to standard output. |
| -r | Write the current release level of the operating system to standard output. |
| -s | Write the name of the operating system implementation to standard output. |
| -v | Write the version level of this release of the operating system to standard output. |
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