Passing array variable in shell_exec Post: 302536091

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LEARN ABOUT FREEBSD

realhostname

REALHOSTNAME(3) 					   BSD Library Functions Manual 					   REALHOSTNAME(3)

NAME

     realhostname -- convert an IP number to the real host name

LIBRARY

     System Utilities Library (libutil, -lutil)

SYNOPSIS

     #include <libutil.h>

     int
     realhostname(char *host, size_t hsize, const struct in_addr *ip);

DESCRIPTION

     The function realhostname() converts ip to the corresponding host name.  This is done by resolving ip to a host name and then ensuring that
     the host name resolves back to ip.

     host must point to a buffer of at least hsize bytes, and will always be written to by this function.

     If the name resolution does not work both ways or if the host name is longer than hsize bytes, inet_ntoa(3) is used to convert ip to an ASCII
     form.

     If the string written to host is hsize bytes long, host will not be NUL terminated.

RETURN VALUES

     The realhostname() function will return one of the following constants which are defined in <libutil.h>:

	HOSTNAME_FOUND
	     A valid host name was found.

	HOSTNAME_INCORRECTNAME
	     A host name was found, but it did not resolve back to the passed ip.  host now contains the numeric value of ip.

	HOSTNAME_INVALIDADDR
	     ip could not be resolved.	host now contains the numeric value of ip.

	HOSTNAME_INVALIDNAME
	     A host name was found, but it could not be resolved back to any ip number.  host now contains the numeric value of ip.

SEE ALSO

     gethostbyaddr(3), gethostbyname(3), inet_ntoa(3), realhostname_sa(3)

BSD
								   April 6, 1999							       BSD

10 More Discussions You Might Find Interesting

1. Programming

Passing by value a char array

Discussion started by: rkraj

2. Shell Programming and Scripting

passing line into array

Discussion started by: mrwatkin

3. Shell Programming and Scripting

[bash] passing array to function

Discussion started by: ASGR

4. Programming

Passing two dimensional array to a function

Discussion started by: Shang