Provided by: db5.3-util_5.3.28-3ubuntu3_amd64 bug

NAME

       db5.2_load - Load data from standard input

SYNOPSIS

       db5.2_load  [-nTV]  [-c  name=value]  [-f file] [-h home] [-P password] [-t btree | hash |
       queue | recno] file

       db5.2_load [-r lsn | fileid] [-h home] [-P password] file

DESCRIPTION

       The db5.2_load utility reads from the standard input and loads it into the database  file.
       The database file is created if it does not already exist.

       The  input to db5.2_load must be in the output format specified by the db5.0_dump utility,
       utilities, or as specified for the -T below.

OPTIONS

       -c     Specify configuration options ignoring any value they may have based on the  input.
              The  command-line  format  is name=value.  See the Supported Keywords section below
              for a list of keywords supported by the -c option.

       -f     Read from the specified input file instead of from the standard input.

       -h     Specify a home directory for the database environment.

              If a home directory is specified, the database  environment  is  opened  using  the
              DB_INIT_LOCK,  DB_INIT_LOG, DB_INIT_MPOOL, DB_INIT_TXN, and DB_USE_ENVIRON flags to
              DB_ENV->open.  (This means that db5.2_load can be used to load data into  databases
              while they are in use by other processes.) If the DB_ENV->open call fails, or if no
              home directory is specified, the database is still updated, but the environment  is
              ignored; for example, no locking is done.

       -n     Do  not  overwrite  existing  keys  in  the  database  when loading into an already
              existing database.  If a key/data pair cannot be loaded into the database for  this
              reason,  a  warning  message  is  displayed  on  the standard error output, and the
              key/data pair are skipped.

       -P     Specify an environment password.  Although Berkeley DB utilities overwrite password
              strings  as  soon  as  possible, be aware there may be a window of vulnerability on
              systems where unprivileged users can see command-line arguments or where  utilities
              are not able to overwrite the memory containing the command-line arguments.

       -r     Reset the database's file ID or log sequence numbers (LSNs).

              All  database  pages  in  transactional  environments  contain  references  to  the
              environment's log records.  In order to copy a database into a  different  database
              environment,  database page references to the old environment's log records must be
              reset, otherwise data corruption can occur when the database is modified in the new
              environment.  The -r lsn option resets a database's log sequence numbers.

              All  databases  contain  an ID string used to identify the database in the database
              environment cache.  If a database is copied, and used in the  same  environment  as
              another  file with the same ID string, corruption can occur.  The -r fileid  option
              resets a database's file ID to a new value.

              In both cases, the physical file specified by the file  argument  is  modified  in-
              place.

       -T     The  -T  option  allows non-Berkeley DB applications to easily load text files into
              databases.

              If the database to be created is of type Btree or Hash,  or  the  keyword  keys  is
              specified  as  set, the input must be paired lines of text, where the first line of
              the pair is the key item, and the second line of the pair is its corresponding data
              item.  If the database to be created is of type Queue or Recno and the keyword keys
              is not set, the input must be lines of text, where each line is a new data item for
              the database.

              A  simple escape mechanism, where newline and backslash (\) characters are special,
              is applied to the  text  input.   Newline  characters  are  interpreted  as  record
              separators.   Backslash  characters  in  the text will be interpreted in one of two
              ways: If the backslash character precedes another  backslash  character,  the  pair
              will  be  interpreted  as a literal backslash.  If the backslash character precedes
              any other character, the two characters following the backslash will be interpreted
              as a hexadecimal specification of a single character; for example, \0a is a newline
              character in the ASCII character set.

              For this reason, any backslash or newline characters that naturally  occur  in  the
              text input must be escaped to avoid misinterpretation by db5.2_load.

              If  the -T option is specified, the underlying access method type must be specified
              using the -t option.

       -t     Specify the underlying access method.  If no -t option is specified,  the  database
              will  be loaded into a database of the same type as was dumped; for example, a Hash
              database will be created if a Hash database was dumped.

              Btree and Hash databases may be converted from one to the other.  Queue  and  Recno
              databases  may  be converted from one to the other.  If the -k option was specified
              on the call to db5.2_dump then Queue and Recno databases may be converted to  Btree
              or Hash, with the key being the integer record number.

       -V     Write the library version number to the standard output, and exit.

       The db5.2_load utility may be used with a Berkeley DB environment (as described for the -h
       option, the environment variable DB_HOME, or because the utility was run  in  a  directory
       containing  a  Berkeley  DB  environment).   In order to avoid environment corruption when
       using a Berkeley DB environment, db5.2_load should always be given the  chance  to  detach
       from  the environment and exit gracefully.  To cause db5.2_load to release all environment
       resources and exit cleanly, send it an interrupt signal (SIGINT).

       The db5.2_load utility exits 0 on success, 1 if one or more key/data pairs were not loaded
       into the database because the key already existed, and >1 if an error occurs.

EXAMPLES

       The  db5.2_load  utility  can be used to load text files into databases.  For example, the
       following command loads the standard UNIX /etc/passwd file into a database, with the login
       name as the key item and the entire password entry as the data item:

       awk -F: '{print $1; print $0}' < /etc/passwd |
               sed 's/\\/\\\\/g' | db5.2_load -T -t hash passwd.db

       Note  that  backslash  characters  naturally  occurring  in  the text are escaped to avoid
       interpretation as escape characters by db5.2_load.

ENVIRONMENT

       DB_HOME
              If the -h option is not specified and the environment variable DB_HOME is  set,  it
              is used as the path of the database home, as described in DB_ENV->open.

SUPPORTED KEYWORDS

       The  following  keywords  are  supported  for  the -c command-line ption to the db5.2_load
       utility.  See DB->open for further discussion of these keywords and what values should  be
       specified.

       The  parenthetical  listing  specifies  how  the  value  part  of  the  name=value pair is
       interpreted.  Items listed as (boolean) expect value to be 1 (set) or  0  (unset).   Items
       listed  as  (number)  convert  value to a number.  Items listed as (string) use the string
       value without modification.

       bt_minkey (number)
              The minimum number of keys per page.

       chksum (boolean)
              Enable page checksums.

       database (string)
              The database to load.

       db_lorder (number)
              The byte order for integers in the stored database metadata.

       db_pagesize (number)
              The size of database pages, in bytes.

       duplicates (boolean)
              The value of the DB_DUP flag.

       dupsort (boolean)
              The value of the DB_DUPSORT flag.

       extentsize (number)
              The size of database extents, in pages,  for  Queue  databases  configured  to  use
              extents.

       h_ffactor (number)
              The density within the Hash database.

       h_nelem (number)
              The size of the Hash database.

       keys (boolean)
              Specify whether keys are present for Queue or Recno databases.

       re_len (number)
              Specify fixed-length records of the specified length.

       re_pad (string)
              Specify the fixed-length record pad character.

       recnum (boolean)
              The value of the DB_RECNUM flag.

       renumber (boolean)
              The value of the DB_RENUMBER flag.

       subdatabase (string)
              The subdatabase to load.

AUTHORS

       Sleepycat  Software, Inc. This manual page was created based on the HTML documentation for
       db_load from Sleepycat, by Thijs Kinkhorst <thijs@kinkhorst.com>, for  the  Debian  system
       (but may be used by others).

                                         22 November 2009                           DB5.2_LOAD(1)