Describes system parameters.
Certain parameters vary for different hardware that uses the operating system. These parameters are defined in the /usr/include/sys/param.h file. The most significant parameters are:
| Item | Description |
|---|---|
| NCARGS | Indicates the default number of characters, including terminating null characters, that can be passed using the exec subroutine. |
| UBSIZE | The unit used by the statistics subroutines for returning block sizes of files. |
This file also contains macros for manipulating machine-dependent fields.
Programs that are intended to comply with the POSIX standard should include the /usr/include/sys/limits.h file rather than the param.h file.