NAME

rwsetunion - Merge the union of multiple IPset files into a single file

SYNOPSIS

  rwsetunion [--compression-method=COMP_METHOD] IPSET_OUT
        IPSET_IN1 [[IPSET_IN2] ...]

DESCRIPTION

Note: It is recommended that you use rwsettool in place of rwsetunion.

rwsetunion takes multiple binary IPset files and performs the union operation, writing the union of the contents of these files to the specified output file.

rwsetunion requires at leasts file arguments; it will exit with an error if it does not receive at least two arguments. Note the name of the output file precedes the name of the input file(s).

For the output, rwsetunion accepts stdout to write the binary IPset to the standard output; likewise, stdin used as an input name cause rwsetunion to read the binary IPset from the standard input. rwsetunion will write an error message and fail when reading or writing a binary IPset on a terminal.

OPTIONS

Option names may be abbreviated if the abbreviation is unique or is an exact match for an option. A parameter to an option may be specified as --arg=param or --arg param, though the first form is required for options that take optional parameters.

--compression-method=COMP_METHOD

Set the compression method of the output to COMP_METHOD. Some SiLK tools can use an external library to compress their binary output. The list of available compression methods and the default method are set when SiLK is compiled (the --help and --version switches print the available and default compression methods) and depend on which supported libraries are found. SiLK can support:

none

Do not compress the output using an external library

zlib

Use the zlib(3) library for compressing the output

lzo1x

Use the lzo1x algorithm from the LZO real time compression library for compression

best

Use whichever available method gives the best compression in general, though not necessarily the best for this particular output.

SEE ALSO

rwsettool(1), rwset(1), rwsetbuild(1), rwsetcat(1)

NOTES

rwsettool supersedes rwsetunion. Modify your use of rwsetunion as follows:

  Change:
    rwsetunion DEST_SET SET1 SET2 ...
  To:
    rwsettool --union --output=DEST_SET SET1 SET2 ...