NAME

cksum -
calculate a cksum(1) compatible checksum

SYNOPSIS

package require Tcl 8.2
package require cksum  ? 1.0.1 ?
::crc::cksum  ? -format format ?  message
::crc::cksum  ? -format format ?  -filename file

DESCRIPTION

This package provides a Tcl-only implementation of the cksum(1) algorithm based upon information provided at in the GNU implementation of this program as part of the GNU Textutils 2.0 package.

COMMANDS

::crc::cksum ? -format format ? message
::crc::cksum ? -format format ? -filename file
The command takes string data or a file name and returns a checksum value calculated using the cksum(1) algorithm. The result is formatted using the format(n) specifier provided or as an unsigned integer (%u) by default.

OPTIONS

-filename name
Return a checksum for the file contents instead of for parameter data.
-format string
Return the checksum using an alternative format template.

EXAMPLES

% crc::cksum "Hello, World!"
2609532967

% crc::cksum -format 0x%X "Hello, World!"
0x9B8A5027

% crc::cksum -file cksum.tcl
1828321145

AUTHORS

Pat Thoyts

SEE ALSO

sum(n), crc32(n)

KEYWORDS

cksum, checksum, crc, crc32, cyclic redundancy check, data integrity, security