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setnetent(3)
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GETNETENT !!!GETNETENT NAME SYNOPSIS DESCRIPTION RETURN VALUE FILES CONFORMING TO SEE ALSO ---- !!NAME getnetent, getnetbyname, getnetbyaddr, setnetent, endnetent - get network entry !!SYNOPSIS __#include __''name''__); struct netent *getnetbyaddr(long__ ''net''__, int__ ''type''__); void setnetent(int__ ''stayopen''__); void endnetent(void); __ !!DESCRIPTION The __getnetent()__ function reads the next line from the file ''/etc/networks'' and returns a structure ''netent'' containing the broken out fields from the line. The ''/etc/networks'' file is opened if necessary. The __getnetbyname()__ function returns a ''netent'' structure for the line from ''/etc/networks'' that matches the network ''name''. The __getnetbyaddr()__ function returns a ''netent'' structure for the line that matches the network number ''net'' of type ''type''. The __setnetent()__ function opens and rewinds the ''/etc/networks'' file. If ''stayopen'' is true (1), then the file will not be closed between calls to __getnetbyname()__ and __getnetbyaddr()__. The __endservent()__ function closes ''/etc/networks''. The ''netent'' structure is defined in '''' as follows: struct netent { char *n_name; /* official network name */ char **n_aliases; /* alias list */ int n_addrtype; /* net address type */ unsigned long int n_net; /* network number */ } The members of the ''netent'' structure are: ''n_name'' The official name of the network. ''n_aliases'' A zero terminated list of alternative names for the network. ''n_addrtype'' The type of the network number; always AF_INET. ''n_net'' The network number in host byte order. !!RETURN VALUE The __getnetent()__, __getnetbyname()__ and __getnetbyaddr()__ functions return the ''netent'' structure, or a NULL pointer if an error occurs or the end of the file is reached. !!FILES /etc/networks networks database file !!CONFORMING TO BSD 4.3 !!SEE ALSO getprotoent(3), getservent(3), networks(5) RFC 1101 ----
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