*** UNIX MANUAL PAGE BROWSER ***

A Nergahak database for man pages research.

Navigation

Directory Browser

1Browse 4.4BSD4.4BSD
1Browse Digital UNIXDigital UNIX 4.0e
1Browse FreeBSDFreeBSD 14.3
1Browse MINIXMINIX 3.4.0rc6-d5e4fc0
1Browse NetBSDNetBSD 10.1
1Browse OpenBSDOpenBSD 7.7
1Browse UNIX v7Version 7 UNIX
1Browse UNIX v10Version 10 UNIX

Manual Page Search

Manual Page Result

0 Command: AnyDBM_File | Section: 3p | Source: OpenBSD | File: AnyDBM_File.3p
AnyDBM_File(3p) Perl Programmers Reference Guide AnyDBM_File(3p) NAME AnyDBM_File - provide framework for multiple DBMs SYNOPSIS use AnyDBM_File; DESCRIPTION This module is a "pure virtual base class"--it has nothing of its own. It's just there to inherit from one of the various DBM packages. It prefers ndbm for compatibility reasons with Perl 4, then Berkeley DB (See DB_File), GDBM, SDBM (which is always there--it comes with Perl), and finally ODBM. This way old programs that used to use NDBM via dbmopen() can still do so, but new ones can reorder @ISA: BEGIN { @AnyDBM_File::ISA = qw(DB_File GDBM_File NDBM_File) } use AnyDBM_File; Having multiple DBM implementations makes it trivial to copy database formats: use Fcntl; use NDBM_File; use DB_File; tie %newhash, 'DB_File', $new_filename, O_CREAT|O_RDWR; tie %oldhash, 'NDBM_File', $old_filename, 1, 0; %newhash = %oldhash; DBM Comparisons Here's a partial table of features the different packages offer: odbm ndbm sdbm gdbm bsd-db ---- ---- ---- ---- ------ Linkage comes w/ perl yes yes yes yes yes Src comes w/ perl no no yes no no Comes w/ many unix os yes yes[0] no no no Builds ok on !unix ? ? yes yes ? Code Size ? ? small big big Database Size ? ? small big? ok[1] Speed ? ? slow ok fast FTPable no no yes yes yes Easy to build N/A N/A yes yes ok[2] Size limits 1k 4k 1k[3] none none Byte-order independent no no no no yes Licensing restrictions ? ? no yes no [0] on mixed universe machines, may be in the bsd compat library, which is often shunned. [1] Can be trimmed if you compile for one access method. [2] See DB_File. Requires symbolic links. [3] By default, but can be redefined. SEE ALSO dbm(3), ndbm(3), DB_File(3), perldbmfilter perl v5.40.1 2025-01-28 AnyDBM_File(3p)

Navigation Options