nauty-copyg(1) convert format and select subset

SYNOPSIS

copyg [,-gszfp#:#qhx/] [,infile /[,outfile/]]

DESCRIPTION

Copy a file of graphs with possible format conversion.
-g
Use graph6 format for output
-s
Use sparse6 format for output
-z
Use digraph6 format for output
-i
Use incremental sparse6 format for output
In the absence of -g, -s, -z or -i, the format depends on the header or, if none, the first input line. As an exception, digraphs are always written in digraph6.
-p# -p#:#
Specify range of input lines (first is 1) This can fail if the input has incremental lines. -f With -p, assume input lines of fixed length
(ignored if header or first line has sparse6 format).
-I# Have at most this number of incremental steps
in a row.
Implies -i.
-h
Write a header.
-x
Don't write a header.
In the absence of -h and -x, a header is written if there is one in the input.
-q
Suppress auxiliary output.