SERVICES_MKDB(8) FreeBSD System Manager's Manual SERVICES_MKDB(8)


services_mkdbgenerate the services database


services_mkdb [ -b | -l][ -q][ -o database][ file]

services_mkdb -u [ file]


The services_mkdb utility creates a db(3) database for the specified file. If no file is specified, then /etc/services is used. The database is installed into /var/db/services.db. The file must be in the correct format (see services(5)).

The options are as follows:

Use big-endian byte order for database metadata.
Use little-endian byte order for database metadata.
-o database
Put the output databases in the named file.
Do not warn about duplicate services.
Print the services file to stdout, omitting duplicate entries and comments.

The databases are used by the C library services routines (see

The -b and -l flags are mutually exclusive. The default byte ordering is the current host order. getservent(3)).


The current services database.
A temporary file.
The current services file.


The services_mkdb utility exits 0 on success, and >0 if an error occurs.


Because services_mkdb guarantees not to install a partial destination file it must build a temporary file in the same file system and if successful use rename(2) to install over the destination file.

If services_mkdb fails it will leave the previous version of the destination file intact.

April 4, 2010 FreeBSD