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rwcompare(1)			SiLK Tool Suite			  rwcompare(1)

NAME
       rwcompare - Compare the records in two SiLK Flow	files

SYNOPSIS
	 rwcompare [--quiet] [--site-config-file] FILE1	FILE2

	 rwcompare --help

	 rwcompare --version

DESCRIPTION
       rwcompare opens the two files named on the command and compares the
       SiLK Flow records they contain.	If the records are identical,
       rwcompare exits with status 0.  If any of the records differ, rwcompare
       prints a	message	and exits with status 1.  If there is an issue reading
       either file, an error is	printed	and the	exit status is 2.  Use the
       --quiet switch to suppress all output (error messages included).	 You
       may use "-" or "stdin" for one of the file names, in which case
       rwcompare reads from the	standard input.

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.

       --quiet
	   Do not print	a message if the files differ, and do not an print
	   error message if a file cannot be opened or read.

       --site-config-file=FILENAME
	   Read	the SiLK site configuration from the named file	FILENAME.
	   When	this switch is not provided, rwcombine searches	for the	site
	   configuration file in the locations specified in the	"FILES"
	   section.

       --help
	   Print the available options and exit.

       --version
	   Print the version number and	information about how SiLK was
	   configured, then exit the application.

EXAMPLES
       In the following	examples, the dollar sign ($) represents the shell
       prompt.	Some input lines are split over	multiple lines in order	to
       improve readability, and	a backslash (\)	is used	to indicate such
       lines.  The examples assume the existence of the	file data.rw that
       contains	SiLK Flow records.  The	exit status of the most	recent command
       is available in the shell variable $?.

       Compare a file with itself:

	$ rwcompare data.rw data.rw
	$ echo $?
	0

       Compare a file with itself, where one instance of the file is read from
       the standard input:

	$ rwcat	data.rw	| rwcompare - data.rw
	$ echo $?
	0

       Use rwsort(1) to	modify one instance of the file	and compare the
       results:

	$ rwsort --fields=proto	data.rw	| rwcompare - data.rw
	- data.rw differ: record 1
	$ echo $?
	1

       Run the command again and use the --quiet switch:

	$ rwsort --fields=proto	data.rw	| rwcompare --quiet - data.rw
	$ echo $?
	1

       Compare the file	with input containing two copies of the	file:

	$ rwcat	data.rw	data.rw	| rwcompare data.rw -
	data.rw	- differ: EOF data.rw
	$ echo $?
	1

       Compare the file	with /dev/null:

	$ rwcompare --quiet /dev/null data.rw
	$ echo $?
	2

       rwcompare checks	whether	two files have the same	records	in the same
       order.  To compare two arbitrary	files, use rwsort(1) to	reorder	the
       records.	 Make certain to provide enough	fields to the rwsort command
       so that the records are in the same order.

	$ rwsort --fields=1-10,12-15,20-29 data.rw > /tmp/sorted-data.rw
	$ rwsort --fields=1-10,12-15,20-29 other-data.rw   \
	  | rwcompare /tmp/sorted-data.rw -
	/tmp/sorted-data.rw - differ: record 103363

ENVIRONMENT
       SILK_CONFIG_FILE
	   This	environment variable is	used as	the value for the
	   --site-config-file when that	switch is not provided.

       SILK_DATA_ROOTDIR
	   This	environment variable specifies the root	directory of data
	   repository.	As described in	the "FILES" section, rwcombine may use
	   this	environment variable when searching for	the SiLK site
	   configuration file.

       SILK_PATH
	   This	environment variable gives the root of the install tree.  When
	   searching for configuration files, rwcombine	may use	this
	   environment variable.  See the "FILES" section for details.

FILES
       ${SILK_CONFIG_FILE}
       ${SILK_DATA_ROOTDIR}/silk.conf
       /data/silk.conf
       ${SILK_PATH}/share/silk/silk.conf
       ${SILK_PATH}/share/silk.conf
       /usr/local/share/silk/silk.conf
       /usr/local/share/silk.conf
	   Possible locations for the SiLK site	configuration file which are
	   checked when	the --site-config-file switch is not provided.

SEE ALSO
       rwfileinfo(1), rwcat(1),	rwsort(1), silk(7)

SiLK 3.22.2			  2025-11-01			  rwcompare(1)

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