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       geng - [-x#X#] n [mine[:maxe]] [res/mod] [file]


       geng [-cCmtfbd#D#] [-uygsnh] [-lvq]


              [-x#X#] n [mine[:maxe]] [res/mod] [file]

              Generate all graphs of a specified class.

       n      : the number of vertices (1..32)

              mine:maxe : a range for the number of edges

              #:0 means ’# or more’ except in the case 0:0

              res/mod : only generate subset res out of subsets 0..mod-1

       -c     : only write connected graphs

       -C     : only write biconnected graphs

       -t     : only generate triangle-free graphs

       -f     : only generate 4-cycle-free graphs

       -b     : only generate bipartite graphs

              (-t, -f and -b can be used in any combination)

       -m     : save memory at the expense of time (only makes a

              difference in the absence of -b, -t, -f and n <= 28).

       -d#    : a lower bound for the minimum degree

       -D#    : a upper bound for the maximum degree

       -v     : display counts by number of edges

       -l     : canonically label output graphs

       -u     : do not output any graphs, just generate and count them

       -g     : use graph6 output (default)

       -s     : use sparse6 output

       -y     : use the obsolete y-format instead of graph6 format

       -h     : for graph6 or sparse6 format, write a header too

       -q     : suppress auxiliary output (except from -v)

              See program text for much more information.