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)

       --systemfile
              Read this file after 'lib/system.g'

       --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.