Found 16 records for the .BDF file extension name
There are 15 other file types using the BDF file extension:
.bdf - Adobe Glyph Bitmap Distribution Format
.bdf - Bdiff Bupdate binary update file
.bdf - Egret data file
.bdf - NuGraf scene file
.bdf - West Point Bridge designer file
.bdf - Backup definition file
.bdf - Brother BES-100E Embroidery Software
.bdf - NEi Nastran data file
.bdf - Backup to CD-RW backup definition file
.bdf - E-Mail Detective binary data fragment
.bdf - NEi Nastran bulk data file
.bdf - Quartus II block design file
.bdf - RD Birthday Reminder data file
.bdf - TXRDWIN X-ray diffraction pattern
.bdf - X11 Bitmap Distribution Format
file extension BDF - UNIX font file
File extension BDF description:
For each directory argument, mkfontdir reads all of the font files in the directory searching for properties named "FONT", or (failing that) the name of the file stripped of its suffix. These are converted to lower case and used as font names, and, along with the name of the font file, are written out to the file "fonts.dir" in the directory. The X server and font server use "fonts.dir" to find font files.
The kinds of font files read by mkfontdir depend on configuration parameters, but typically include PCF (suffix ".pcf"), SNF (suffix ".snf") and BDF (suffix ".bdf"). If a font exists in multiple formats, mkfontdir will first choose PCF, then SNF and finally BDF.
The first line of fonts.dir gives the number of fonts in the file. The remaining lines list the fonts themselves, one per line, in two fields. First is the name of the font file, followed by a space and the name of the font.
Associated applications to file extension BDF:
Company / developer:
The Open Group
Unix
Unix operating systems are widely used in both servers and workstations. The Unix environment and the client-server program model were essential elements in the development of the Internet and the reshaping of computing as centered in networks rather than in individual computers.
Both Unix and the C programming language were developed by AT&T and distributed to government and academic institutions, causing both to be ported to a wider variety of machine families than any other operating system. As a result, Unix became synonymous with "open systems".
Unix was designed to be portable, multi-tasking and multi-user in a time-sharing configuration. Unix systems are characterized by various concepts: the use of plain text for storing data; a hierarchical file system; treating devices and certain types of inter-process communication (IPC) as files; and the use of a large number of software tools, small programs that can be strung together through a command line interpreter using pipes, as opposed to using a single monolithic program that includes all of the same functionality. These concepts are known as the Unix philosophy.
Under Unix, the "operating system" consists of many of these utilities along with the master control program, the kernel. The kernel provides services to start and stop programs, handle the file system and other common "low level" tasks that most programs share, and, perhaps most importantly, schedules access to hardware to avoid conflicts if two programs try to access the same resource or device simultaneously. To mediate such access, the kernel was given special rights on the system, leading to the division between user-space and kernel-space.
The microkernel concept was introduced in an effort to reverse the trend towards larger kernels and return to a system in which most tasks were completed by smaller utilities. In an era when a "normal" computer consisted of a hard disk for storage and a data terminal for input and output (I/O), the Unix file model worked quite well as most I/O was "linear". However, modern systems include networking and other new devices. As graphical user interfaces developed, the file model proved inadequate to the task of handling asynchronous events such as those generated by a mouse, and in the 1980s non-blocking I/O and the set of inter-process communication mechanisms was augmented (sockets, shared memory, message queues, semaphores), and functionalities such as network protocols were moved out of the kernel.