| -n | Print devices out by major/minor instead of name. |
| -h | "Human-readable" output. Use unit suffixes when printing swap partition sizes: Byte, Kilobyte, Megabyte, Gigabyte, Terabyte and Petabyte. |
| -k | Print sizes in kilobytes, regardless of the setting of the BLOCKSIZE environment variable. |
| -T | Print the number of used and free slots in several system tables. This is useful for checking to see how large system tables have become if the system is under heavy load. |
| -f | Print the open file table with these headings: |
| LOC | The core location of this table entry. |
| TYPE | The type of object the file table entry points to. |
| FLG | Miscellaneous state variables encoded thus: |
| R | open for reading |
| W | open for writing |
| A | open for appending |
| I | signal pgrp when data ready |
|
| -s | Print information about swap space usage on all the swap areas compiled into the kernel. The first column is the device name of the partition. The next column is the total space available in the partition. The Used column indicates the total blocks used so far; the Available column indicates how much space is remaining on each partition. The Capacity reports the percentage of space used. If more than one partition is configured into the system, totals for all of the statistics will be reported in the final line of the report. |
| -t | Print table for terminals with these headings: |
| LINE | Device name. |
| RAW | Number of characters in raw input queue. |
| CAN | Number of characters in canonicalized input queue. |
| OUT | Number of characters in output queue. |
| IHIWT | High water mark for input. |
| ILOWT | Low water mark for input. |
| OHWT | High water mark for output. |
| LWT | Low water mark for output. |
| COL | Calculated column position of terminal. |
| STATE | Miscellaneous state variables encoded thus: |
| T | delay timeout in progress |
| W | waiting for open to complete |
| O | open |
| F | outq has been flushed during DMA |
| C | carrier is on |
| c | connection open |
| B | busy doing output |
| A | process is waiting for space in output queue |
| a | process is waiting for output to complete |
| X | open for exclusive use |
| S | output stopped (ixon flow control) |
| m | output stopped (carrier flow control) |
| o | output stopped (CTS flow control) |
| d | output stopped (DSR flow control) |
| K | input stopped |
| Y | send SIGIO for input events |
| D | state for lowercase ‘\’ work |
| E | within a ‘\.../’ for PRTRUB |
| L | next character is literal |
| P | retyping suspended input (PENDIN) |
| N | counting tab width, ignore FLUSHO |
| l | block mode input routine in use |
| s | i/o being snooped |
| Z | connection lost |
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