Copyright (c) 1983 Eric P. Allman
Copyright (c) 1988, 1993 The Regents of the University of California. All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
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Copyright (c) 2009, Sun Microsystems, Inc. All Rights Reserved.
Copyright (c) 2019 Peter Tribble.
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).
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.
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 sendmail.cf. 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 sendmail.cf.
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 insert.
Ignore safety checks on maps being created. This includes checking for hard or symbolic links in world writable directories.
Use the specified delimiter (delim) instead of whitespace.
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: mapname
File name of the database map being created.
Specifies the database format. The following maptype parameters are available: dbm
Specifies DBM format maps.
Specifies B-Tree format maps.
Specifies hash format maps.
attributes (7), editmap (8), sendmail (8)