bionic (8) makemap.8.gz

Provided by: sendmail-bin_8.15.2-10_amd64 bug

NAME

       makemap - create database maps for sendmail

SYNOPSIS

       makemap [-C file] [-N] [-c cachesize] [-d] [-D commentchar] [-e] [-f] [-l] [-o] [-r] [-s] [-t delim] [-u]
       [-v] maptype mapnam

DESCRIPTION

       Makemap creates the database maps used by the keyed map lookups in sendmail(8).  It reads input from  the
       standard input and outputs them to the indicated mapname.

       Depending  on  how it is compiled, makemap handles up to three different database formats, selected using
       the maptype parameter.  They may be

       dbm    DBM format maps.  This requires the ndbm(3) library.

       btree  B-Tree format maps.  This requires the new Berkeley DB library.

       hash   Hash format maps.  This also requires the Berkeley DB library.

       In all cases, makemap reads lines from the standard input consisting of  two  words  separated  by  white
       space.   The first is the database key, the second is the value.  The value may contain ``%n'' strings to
       indicate parameter substitution.  Literal percents should be doubled (``%%'').   Blank  lines  and  lines
       beginning with ``#'' are ignored.

       Notice:  do  not  use  makemap to create the aliases data base, but newaliases which puts a special token
       into the data base that is required by sendmail.

       If the TrustedUser option is set in the sendmail configuration file and makemap is invoked as  root,  the
       generated files will be owned by the specified TrustedUser.

   Flags
       -C     Use the specified sendmail configuration file for looking up the TrustedUser option.

       -N     Include  the  null  byte  that  terminates strings in the map.  This must match the -N flag in the
              sendmail.cf ``K'' line.

       -c     Use the specified hash and B-Tree cache size.

       -D     Use to specify the character to use to indicate a  comment  (which  is  ignored)  instead  of  the
              default of '#'.

       -d     Allow  duplicate  keys  in the map.  This is only allowed on B-Tree format maps.  If two identical
              keys are read, they will both be inserted into the map.

       -e     Allow empty value (right hand side).

       -f     Normally all upper case letters in the key are folded to lower  case.   This  flag  disables  that
              behaviour.   This is intended to mesh with the -f flag in the K line in sendmail.cf.  The value is
              never case folded.

       -l     List supported map types.

       -o     Append to an old file.  This allows you to augment an existing file.

       -r     Allow replacement of existing keys.  Normally makemap complains if you repeat a key, and does  not
              do the insert.

       -s     Ignore  safety checks on maps being created.  This includes checking for hard or symbolic links in
              world writable directories.

       -t     Use the specified delimiter instead of white space (also for dumping a map).

       -u     dump (unmap) the content of the database to standard output.

       -v     Verbosely print what it is doing.

SEE ALSO

       sendmail(8), newaliases(1)

HISTORY

       The makemap command appeared in 4.4BSD.

                                          $Date: 2013-11-22 20:51:52 $                                MAKEMAP(8)