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       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 (

       remove For  each fqdn in fqdns, remove all TYPE A records for fqdn from


       IP     The environment variable IP overrides  the  default  IP  address
              (‘‘’’)  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).




       tinydyndns-update(8), tinydyndns-conf(8)


       Gerrit Pape <>