05-09-2013
I have a vague recollection of the address space layout shifting a few times with changes in CPU architectures. First there was the IBM 360 architecture, then the 16-bit address space PDP-11, then the 17-bit address space PDP-11, then the VAX, then the 3B20, 3B2, 3B5, M68K, SPARC, PA RISC, etc., and the segmented address space of the various x86 and similar processors. The people that did the ports to each new architecture decided at that time where code, text, heap, and stack would be placed for that architecture. For various reasons, they were not all in the same order. But, once an order was chosen for a particular processor type, ABI considerations tended to use the same layout for all systems based on that architecture. (Some companies (e.g., Intel) caused some unnecessary incompatibilities by not letting various contractors working on different OSes for the same architecture talk to each other and giving different answers to trivial questions like whether some numbers were presented in decimal or octal in tables that Intel created and then shared with the contractors.)
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avahi-dnsconfd.action
avahi-dnsconfd.action(8) System Manager's Manual avahi-dnsconfd.action(8)
NAME
avahi-dnsconfd.action - avahi-dnsconfd action script
SYNOPSIS
/etc/avahi/avahi-dnsconfd.action
DESCRIPTION
avahi-dnsconfd.action is the action script that is called whenever a new unicast DNS server is found or removed by avahi-dnsconfd. The
default script as shipped with avahi patches /etc/resolv.conf to reflect the changed unicast DNS server configuration.
PARAMETERS
argv[1] Contains the character "+" if the DNS server is new, "-" when it shall be removed from the DNS server list.
argv[2] The IP address of the DNS server.
argv[3] Numerical network interface number this DNS server was found on.
argv[4] Numerical protocol number this DNS server was found on. (usually 2 for IPv4 and 10 for IPv6)
ENVIRONMENT
AVAHI_INTERFACE Contains the textual interface name the corresponds with argv[3]. (e.g. "eth0")
AVAHI_INTERFACE_DNS_SERVERS Contains a list of all DNS servers that avahi-dnsconfd found on the interface $AVAHI_INTERFACE, separated by
spaces.
AVAHI_DNS_SERVERS Contains a list of all DNS server that avahi-dnsconfd found on all interfaces, separated by spaces.
AUTHORS
The Avahi Developers <avahi (at) lists (dot) freedesktop (dot) org>; Avahi is available from http://avahi.org/
SEE ALSO
avahi-dnsconfd(8), avahi-daemon(8)
COMMENTS
This man page was written using xml2man(1) by Oliver Kurth.
Manuals User avahi-dnsconfd.action(8)