diff -up hostname/Makefile.rh hostname/Makefile --- hostname/Makefile.rh 2013-11-04 10:12:59.670379153 +0100 +++ hostname/Makefile 2013-11-04 10:15:04.957314495 +0100 @@ -10,21 +10,17 @@ OBJS=hostname.o hostname: $(OBJS) $(CC) $(CFLAGS) -o $@ $(OBJS) $(LDFLAGS) -lnsl - ln -fs hostname dnsdomainname - ln -fs hostname domainname - ln -fs hostname ypdomainname - ln -fs hostname nisdomainname install: hostname install -d ${BASEDIR}$(MANDIR)/man1 - install -o root -g root -m 0644 hostname.1 ${BASEDIR}$(MANDIR)/man1 + install -m 0644 hostname.1 ${BASEDIR}$(MANDIR)/man1 ln -fs hostname.1 ${BASEDIR}$(MANDIR)/man1/dnsdomainname.1 ln -fs hostname.1 ${BASEDIR}$(MANDIR)/man1/domainname.1 ln -fs hostname.1 ${BASEDIR}$(MANDIR)/man1/ypdomainname.1 ln -fs hostname.1 ${BASEDIR}$(MANDIR)/man1/nisdomainname.1 install -d ${BASEDIR}$(BINDIR) - install -o root -g root -m 0755 hostname ${BASEDIR}$(BINDIR) + install -m 0755 hostname ${BASEDIR}$(BINDIR) ln -fs hostname ${BASEDIR}$(BINDIR)/dnsdomainname ln -fs hostname ${BASEDIR}$(BINDIR)/domainname ln -fs hostname ${BASEDIR}$(BINDIR)/nisdomainname diff -up hostname/hostname.1.rh hostname/hostname.1 --- hostname/hostname.1.rh 2013-11-03 15:24:23.000000000 +0100 +++ hostname/hostname.1 2013-11-04 10:12:59.670379153 +0100 @@ -80,6 +80,28 @@ complete FQDN of the system is returned .B "THE FQDN" below). +.LP +The function +.BR gethostname(2) +is used to get the hostname. When the +.BR "hostname \-a, \-d, \-f or \-i" +is called will +.BR gethostbyname(3) +be called. The difference in +.BR gethostname(2) +and +.BR gethostbyname(3) +is that +.BR gethostbyname(3) +is network aware, so it consults +.IR /etc/nsswitch.conf +and +.IR /etc/host.conf +to decide whether to read information in +.IR /etc/hostname +or +.IR /etc/hosts + .SS "SET NAME" When called with one argument or with the .B \-\-file @@ -105,8 +127,7 @@ command (see .B "THE FQDN" below). .LP -The host name is usually set once at system startup in -.I /etc/init.d/hostname.sh +The host name is usually set once at system startup (normally by reading the contents of a file which contains the host name, e.g. .IR /etc/hostname ).