MAKEMAP(8) Maintenance Procedures MAKEMAP(8)


makemap - create database maps for sendmail


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


makemap creates the database maps used by the keyed map lookups in
sendmail(8). makemap reads from the standard input and outputs to the
specified mapname.

In all cases, makemap reads lines from the standard input consisting of
two words separated by whitespace. 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.

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


The following options are supported:

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

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

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

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

Allow empty value (right hand side).

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

List supported map types.

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

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

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

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

-t delim
Use the specified delimiter (delim) instead of

Dump (unmap) the content of the database to standard
output. Note that, if the -t option is also provided,
the specified delimiter is used when the content is
dumped instead of whitespace.

Verbosely print keys and values being added.


The following operands are supported:

File name of the database map being created.

Specifies the database format. The following maptype
parameters are available:

Specifies DBM format maps.

Specifies B-Tree format maps.

Specifies hash format maps.


attributes(7), editmap(8), sendmail(8)

January 21, 2019 MAKEMAP(8)