DB(1) NetBSD General Commands Manual DB(1) NAME db -- manipulate db(3)'s btree(3) and hash(3) databases SYNOPSIS db [-KiNqV] [-E endian] [-f infile] [-O str] [-S chr] [-T str] [-X str] type database [key [...]] db -d [-iNq] [-E endian] [-f infile] [-U chr] type database [key [...]] db -w [-CDiNqR] [-E endian] [-F sep] [-f infile] [-m mode] [-U chr] type database [key value [...]] DESCRIPTION db allows manipulation of btree(3) and hash(3) (db(3)) databases. db has three modes of operation: read Displays the given keys, and keys described in infile. If no keys and no infile is specified, the entire database is displayed. This is the default mode of operation. delete Enabled with -d. Deletes the given keys, and keys described in infile. write Enabled with -w. Writes the given keys and values, and keys and values described in infile (in the latter case, entries are separated by sep). There are two mandatory arguments: type is the database type; either `btree' or `hash', and database is the database file to manipulate. Options valid for all modes are: -E endian Set the endianness of the database. endian may be one of: B Big endian H Host endian L Little endian Defaults to `H' (host endian). -f infile Contains a list of keys (for read and delete), or sep separated keys and values (for write) to be used as arguments to the given mode. If infile is `-', stdin is used. -i Keys are converted to lower case before manipulation. -N Do not include the NUL byte at the end of the key or value. -q Quiet operation. In read mode, missing keys are not considered to be an error. In delete (-d) and write (-w) modes, the result of various operations is sup- pressed. Read mode specific options are: -K Display key. -O str Field separator string between key and value. Defaults to a single tab (`\t'). -S chr Specify items to strvis(3) encode. The chr option- argument is a character specifying if the key (k), the value (v) or both (b) should be encoded. -T str Control how the items specified by the -S option are encoded. The str option-argument is a string specify- ing strvis(3) options. The string consists of the specification characters b, c, o, s, t, and w. See vis(1)'s corresponding options for the meaning of these characters. -V Display value. -X str When encoding items with -S option also encode charac- ters in str, per svis(3). (If neither of -K or -V is given, both options are enabled.) Write mode specific options are: -C Create new database, and truncate existing databases. -D Allow duplicate entries. (Requires -R to be useful.) -F sep Field separator between key and value used when parsing infile. Defaults to a single space (` '). -m mode Octal mode of created database. Defaults to `0644'. -R Overwrite existing entries. If not specified, writing to an existing entry raises an error. Write and delete mode specific options are: -U chr Specify items to strunvis(3) decode. The chr option- argument is a character specifying if the key (k), the value (v) or both (b) should be decoded. SEE ALSO vis(1), btree(3), db(3), hash(3), strunvis(3), strvis(3), svis(3), makemap(8) HISTORY The db command appeared in NetBSD 2.0. AUTHORS Luke Mewburn <lukem@NetBSD.org>. NetBSD 3.1 May 19, 2003 NetBSD 3.1