NAME
makemap —
create database maps for
sendmail
SYNOPSIS
makemap |
[-C file]
[-N] [-c
cachesize] [-D
commentchar] [-d]
[-e] [-f]
[-l] [-o]
[-r] [-s]
[-t delim]
[-u] [-v]
maptype mapname |
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 whitespace. The first is
the database key, the second is the value. The value may contain
``%n'' strings to indicated 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(8) which puts a special token into the data base
that is required by
sendmail(8).
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
-Cfile- Use the specified
sendmail(8) configuration file for looking up
the
TrustedUseroption. -N- Include the null byte that terminates strings in the map. This must match
the
-Nflag 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
-fflag 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
makemapcomplains 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
HISTORY
The makemap command appeared in
4.4BSD.