<operating system>

1. Internal fragmentation. Space allocated to a disk file but not actually used to store useful information.


2. In the theology of the Church of the SubGenius, a mystical substance or quality that is the prerequisite of all human happiness.

Since Unix files are stored compactly, except for the unavoidable wastage in the last block or fragment, it might be said that "Unix has no slack".

See ha ha only serious.

[Jargon File]

Last updated: 1995-03-01


<operating system>

A distribution of the Linux operating system by Patrick Volkerding <[email protected]>, <[email protected]>.


Sunsite Linux archives.

Sunsite mirrors.

Last updated: 1995-03-01



1. Simulation Language for Alternative Modeling.

2. A continuous simulation language.

["SLAM - A New Continuous Simulation Language", N.A. Wallington et al, in SCS Simulation Council Proc Series: Toward Real-Time Simulation (Languages, Models and Systems), R.E. Crosbie et al eds, 6(1):85-89 (Dec 1976)].

Last updated: 1995-03-03


1. R.A. Sibley. CACM 4(1):75-84 (Jan 1961).

2. Set LANGuage. Jastrzebowski, ca 1990. C extension with set-theoretic data types and garbage collection. "The SLANG Programming Language Reference Manual, Version 3.3", W. Jastrzebowski <[email protected]>, 1990.

3. Structured LANGuage. Michael Kessler, IBM. A language based on structured programming macros for IBM 370 assembly language. "Project RMAG: SLANG (Structured Language) Compiler", R.A. Magnuson, NIH-DCRT-DMB-SSS-UG105, NIH, DHEW, Bethesda, MD 20205 (1980).

4. "SLANG: A Problem Solving Language for Continuous-Model Simulation and Optimisation", J.M. Thames, Proc 24th ACM Natl Conf 1969.



A small but highly functional embedded interpreter. S-Lang was a stack-based postfix language resembling Forth and BC/DC with limited support for infix notation. Now it has a C-like infix syntax. Arrays, stings, integers, floating-point and autoloading are all suported. The editor JED embeds S-lang.

S-Lang is available under the GNU Library General Public License. It runs on MS-DOS, Unix, and VMS.

E-mail: John E. Davis <[email protected]>.

Last updated: 2000-10-30

slap on the side

(Also called a sidecar, or abbreviated "SOTS"). A type of external expansion hardware marketed by computer manufacturers (e.g. Commodore for the Amiga 500/1000 series and IBM for the hideous failure called IBM PCjr). Various SOTS boxes provided necessities such as memory, hard drive controllers, and conventional expansion slots.

[Jargon File]


oblique stroke

slashdot effect


An effect where a document on a WWW server is linked to from another, popular, site, with the resultant traffic overloading the server so that a connection cannot be made to it. This is especially likely if the server is running Microsoft IIS.

The term was coined by readers of the Unix advocacy web site

Last updated: 1998-10-24

slave tty

(/dev/ttyp*) The half of a pseudo-tty which programs (e.g. getty) read from and write to as though it was an ordinary serial line.

Nearby terms:

skulkerSLslSL5slackslackwareSLAMSLANGS-Langslap on the side

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