tinydyndns-data - add or remove TYPE A record to or from data.cdb
tinydyndns-data add|remove fqdns
fqdns consists of one or more argument, each specifying a fully
qualified domain name (fqdn).
tinydyndns-data adds a TYPE A record to or removes it from data.cdb in
the current directory. Other than tinydns-data(8), tinydyndns-data
does not know about the source file data but changes the binary
database data.cdb directly.
tinydyndns-data reads data.cdb and copies its data to data.tmp. While
reading the records, tinydyndns-data checks for each fqdn in fqdns if
this hostname has a TYPE A record in data.cdb, drops the record when
called with the option remove, or refuses to add the record when called
with the option add.
When called with the option add, tinydyndns-data then adds all new
fqdns to data.tmp. The data of the newly created records can
optionally be controlled through the environment, see below. Finally
tinydyndns-data renames data.tmp to data.cdb.
add For each fqdn in fqdns, add a TYPE A record for fqdn to data.cdb
with the default IP address (127.14.14.14).
remove For each fqdn in fqdns, remove all TYPE A records for fqdn from
IP The environment variable IP overrides the default IP address
(‘‘127.14.14.14’’) for newly created records. $IP must be a
valid IP address.
TTL time-to-live. The environment variable TTL overrides the
default time-to-live in seconds (0 if TTD is set, otherwise 5).
$TTL must be an integer.
TTD time-to-die. $TTD must be an integer, specifying a number of
seconds. If TTD is set, the timestamp of newly created records
is set to the current time plus $TTD seconds, and TTL is set to
zero by default, so that tinydns(8) interpretes the timestamp as
time-to-die. Note: you probably want to adjust SOA ttl, or
create a wildcard record, to prevent DNS caches from caching
nxdomain, when using this feature.
LOC location. $LOC must be two characters long. If LOC is set, it
specifies the client location for newly created records.
tinydyndns-data exits 111 if anything goes wrong and leaves data.cdb
tinydyndns-data exits 0 if all fqdns were processed and the new
data.cdb was written.
For each fqdn in fqdns that tinydyndns-data was not able to remove or
add (e.g., not there, or already there), it increases the exit code by
one and exits non-zero (maximum is 100).
Gerrit Pape <firstname.lastname@example.org>