GAP - Groups, Algorithms and Programming
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.
- -q, --quiet
- enable/disable quiet mode
- -e
- disable/enable quitting on <ctrl>-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
- -p
- enable/disable package output mode (for use by XGAP and similar
interfaces)
- (may use postfix 'k' = *1024, 'm' = *1024*1024,
- 'g' = *1024*1024*1024):
- -g, --gasinfo
- show GASMAN messages (full/all/no garbage collections) (only available if
GAP uses GASMAN)
- -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) (only available if GAP uses GASMAN)
- -K, --limitworkspace
<mem>
- set maximal workspace size (GAP never allocates more)
- -s
- <mem> set the initially mapped virtual memory (only available if GAP
uses GASMAN)
- -l, --roots
- <paths> set or modify 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
- -D
- enable/disable debugging the loading of files
- -M
- disable/enable loading of compiled modules
- -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
- --norepl
- Disable the GAP read-evaluate-print loop (REPL)
- --nointeract
- Start GAP in non-interactive mode (disable REPL and break loop)
- (only available if GAP uses GASMAN) -L <file> restore a saved
workspace -R prevent restoring of workspace (ignoring
-L)
- --prof
- <file> Run ProfileLineByLine(<file>) on GAP start
- --memprof
- <file> Run ProfileLineByLine(<file>) on GAP start with
recordMem := true
- --cover
- <file> Run CoverageLineByLine(<file>) on GAP start
Internal developer tools
- -N
- do not use hidden implications
- -O
- disable/enable loading of obsolete files
- --bare
- Attempt to start GAP without even needed packages
- Boolean options toggle the current value each time they are called.
Default actions are indicated first.
The GAP Group <http://www.gap-system.org>
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.
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.