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
(cachesize).
-C file
Use the specified sendmail configuration file
(file) for looking up the TrustedUser option.
-d
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 '#'.
-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 behavior. 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.
-N
Include the null byte that terminates strings in the map.
This must match the -N flag in the K line in
sendmail.cf.
-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 delim
Use the specified delimiter (delim) instead of
whitespace.
-u
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.
-v
Verbosely print keys and values being added.
The following operands are supported:
mapname
File name of the database map being created.
maptype
Specifies the database format. The following
maptype parameters are available:
dbm
Specifies DBM format maps.
btree
Specifies B-Tree format maps.
hash
Specifies hash format maps.