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)