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makemap - create database maps for sendmail
makemap [-C file] [-N] [-c cachesize] [-d] [-e] [-f] [-l] [-o] [-r]
[-s] [-u] [-v] maptype mapnam
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.
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
-C Use the specified sendmail configuration file for looking up the
-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 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
-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
-u dump (unmap) the content of the database to standard output.
-v Verbosely print what it is doing.
The makemap command appeared in 4.4BSD.
November 16, 1992 MAKEMAP(8)