This interface is specified by
IEEE Std 1003.1-2001 ("
POSIX.1").
A more flexible (but non-portable) interface is provided by
sysctl(3).
The
confstr()
function provides a method for applications to get configuration
defined string values.
Shell programmers needing access to these parameters should use the
getconf(1)
utility.
The
name
argument specifies the system variable to be queried.
Symbolic constants for each name value are found in the include file
<unistd.h>.
The
len
argument specifies the size of the buffer referenced by the
argument
buf.
If
len
is non-zero,
buf
is a non-null pointer, and
name
has a value, up to
len
- 1 bytes of the value are copied into the buffer
buf.
The copied value is always null terminated.
The available values are as follows:
|
| _CS_PATH
|
| |
Return a value for the
PATH
environment variable that finds all the standard utilities.
|
|
