## Linux and UNIX Man Pages

Test Your Knowledge in Computers #267
Difficulty: Easy
In 1935, at the age of 22, Alan Turning was elected a fellow of King's on the strength of a dissertation in which he proved the central limit theorem.
True or False?

# genders_testattr(3) [bsd man page]

```GENDERS_TESTATTR(3)						    LIBGENDERS						       GENDERS_TESTATTR(3)

NAME
genders_testattr - test if a node has an attribute

SYNOPSIS
#include <genders.h>

int genders_testattr(genders_t handle, const char *node, const char *attr, char *val, int len);

int genders_testattrval(genders_t handle, const char *node, const char *attr, const char *val);

DESCRIPTION
genders_testattr()  tests  if  the node pointed to by node contains the attribute pointed to by attr.  If node is NULL, the current node is
tested.	If the attribute is found, its value is stored in the buffer pointed to by val.  len should indicate the length of the buffer.	If
the attribute value is not needed, val can be set to NULL.

To avoid passing in an attribute value buffer that is not large enough to store the attribute value, genders_getmaxvallen(3) should be used
to determine the minimum buffer size that should be used.

genders_testattrval() tests if the node pointed to by node contains the attribute pointed to by attr and if that attribute is equal to  the
attribute value pointed to by val.  If val is NULL, only the attribute is tested.

RETURN VALUES
For genders_testattr(), if the node contains the attribute, 1 is returned.  0 is returned if the node does not contain the attribute.

For  genders_testattrval(), if the node contains the attribute and it is equal to the attribute value, 1 is returned.  0 is returned if the
node does not contain the attribute, or if the attribute is not equal to the attribute value.

For both genders_testattr() and genders_testattrval(), -1 is returned on error, and an error code is returned in handle.   The  error  code
can  be	retrieved  via	genders_errnum(3) , and a description of the error code can be retrieved via genders_strerror(3).  Error codes are
defined in genders.h.

ERRORS
GENDERS_ERR_NULLHANDLE
The handle parameter is NULL.  The genders handle must be created with genders_handle_create(3).

GENDERS_ERR_OVERFLOW
The buffer pointed to by val is not large enough to store the attribute value.

GENDERS_ERR_PARAMETERS
An incorrect parameter has been passed in.

GENDERS_ERR_NOTFOUND
The node pointed to by node cannot be found in the genders file or if node=NULL, the machine genders is running on is not listed	in
the genders database.

GENDERS_ERR_MAGIC
handle  has  an  incorrect  magic  number.   handle  does not point to a genders handle or handle has been destroyed by genders_han-
dle_destroy(3).

FILES
/usr/include/genders.h

libgenders(3), genders_handle_create(3), genders_load_data(3), genders_getmaxvallen(3), genders_errnum(3), genders_strerror(3)

LLNL								    August 2003 					       GENDERS_TESTATTR(3)```

## Check Out this Related Man Page

```GENDERS_TESTATTR(3)						    LIBGENDERS						       GENDERS_TESTATTR(3)

NAME
genders_testattr - test if a node has an attribute

SYNOPSIS
#include <genders.h>

int genders_testattr(genders_t handle, const char *node, const char *attr, char *val, int len);

int genders_testattrval(genders_t handle, const char *node, const char *attr, const char *val);

DESCRIPTION
genders_testattr()  tests  if  the node pointed to by node contains the attribute pointed to by attr.  If node is NULL, the current node is
tested.	If the attribute is found, its value is stored in the buffer pointed to by val.  len should indicate the length of the buffer.	If
the attribute value is not needed, val can be set to NULL.

To avoid passing in an attribute value buffer that is not large enough to store the attribute value, genders_getmaxvallen(3) should be used
to determine the minimum buffer size that should be used.

genders_testattrval() tests if the node pointed to by node contains the attribute pointed to by attr and if that attribute is equal to  the
attribute value pointed to by val.  If val is NULL, only the attribute is tested.

RETURN VALUES
For genders_testattr(), if the node contains the attribute, 1 is returned.  0 is returned if the node does not contain the attribute.

For  genders_testattrval(), if the node contains the attribute and it is equal to the attribute value, 1 is returned.  0 is returned if the
node does not contain the attribute, or if the attribute is not equal to the attribute value.

For both genders_testattr() and genders_testattrval(), -1 is returned on error, and an error code is returned in handle.   The  error  code
can  be	retrieved  via	genders_errnum(3) , and a description of the error code can be retrieved via genders_strerror(3).  Error codes are
defined in genders.h.

ERRORS
GENDERS_ERR_NULLHANDLE
The handle parameter is NULL.  The genders handle must be created with genders_handle_create(3).

GENDERS_ERR_OVERFLOW
The buffer pointed to by val is not large enough to store the attribute value.

GENDERS_ERR_PARAMETERS
An incorrect parameter has been passed in.

GENDERS_ERR_NOTFOUND
The node pointed to by node cannot be found in the genders file or if node=NULL, the machine genders is running on is not listed	in
the genders database.

GENDERS_ERR_MAGIC
handle  has  an  incorrect  magic  number.   handle  does not point to a genders handle or handle has been destroyed by genders_han-
dle_destroy(3).

FILES
/usr/include/genders.h