Scroll to navigation

GAP(1) User Commands GAP(1)

NAME

GAP - Groups, Algorithms and Programming

SYNOPSIS

gap [OPTIONS] [FILES]

DESCRIPTION

GAP is a system for computational discrete algebra, with particular emphasis on Computational Group Theory. GAP provides a programming language, a library of thousands of functions implementing algebraic algorithms written in the GAP language as well as large data libraries of algebraic objects. GAP is used in research and teaching for studying groups and their representations, rings, vector spaces, algebras, combinatorial structures, and more.
-h, --help
print this help and exit
-b, --banner
disable/enable the banner
-q, --quiet
enable/disable quiet mode
-e
disable/enable quitting on <ctr>-D
-f
force line editing
-n
prevent line editing
-E, --readline
disable/enable use of readline library (if possible)
-x, --width
<num> set line width
-y, --lines
<num> set number of lines
-g, --gasinfo
show GASMAN messages (full/all/no garbage collections)
-m, --minworkspace
<mem> set the initial workspace size
-o, --maxworkspace
<mem> set workspace size where GAP will warn about excessive memory usage (GAP may allocate more)
-K, --limitworkspace <mem>
set maximal workspace size (GAP never allocates more)
-s
<mem> set the initially mapped virtual memory
-a
<mem> set amount to pre-malloc-ate postfix 'k' = *1024, 'm' = *1024*1024, 'g' = *1024*1024*1024
-l, --roots
<paths> set the GAP root paths Directories are separated using ';'. Putting ';' on the start/end of list appends directories to the end/start of existing list of root paths
-r
disable/enable user GAP root dir GAPInfo.UserGapRoot
-A
disable/enable autoloading of suggested GAP packages
-B
<name> current architecture
-D
enable/disable debugging the loading of files
-M
disable/enable loading of compiled modules
-N
do not use hidden implications
-O
disable/enable loading of obsolete files
-T, --nobreakloop
disable/enable break loop and error traceback
--alwaystrace
always print error traceback (overrides behaviour of -T)
--quitonbreak
quit GAP with non-zero return value instead of entering break loop
-L
<file> restore a saved workspace
-R
prevent restoring of workspace (ignoring -L)
-p
enable/disable package output mode
--prof
<file> Run ProfileLineByLine(<filename>) on GAP start
--memprof
<file> Run ProfileLineByLine(<filename>) with recordMem := true on GAP start
--cover
<file> Run CoverageLineByLine(<filename>) on GAP start
--norepl
Disable the GAP read-evaluate-print loop (REPL)
--nointeract
Start GAP in non-interactive mode (disable read-evaluate-print loop (REPL) and\
break loop)
--bare
Attempt to start GAP without even needed packages (developer tool)
-c
<expr> execute the given expression
Boolean options toggle the current value each time they are called. Default actions are indicated first.

AUTHORS

The GAP Group <http://www.gap-system.org>

COPYRIGHT

Copyright (1988--2020) by its authors.

GAP is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

SEE ALSO

gac(1) update-gap-workspace(1)

You can read the complete manual in /usr/share/gap/doc or you can use the online help system. Type ?help inside GAP to access it. Type

?Reference: options!under UNIX

to access the full documentation of options.

May 2020 The GAP team