16.8 Cyclic Redundancy Check: crc32

Launching
The crc32 command line is:

tclsh oommf.tcl crc32 [standard options] [-binary|-text] \
   [-decimal|-hex] [-v level] [file ...]

where

-binary|-text

Select binary (default) or text input mode.

-decimal|-hex

Output CRC value in decimal (default) or hexadecimal format.

-v level

Verbosity (informational message) level, with 0 generating only error messages and minimal CRC output, and larger numbers generating additional information. The level value is an integer, defaulting to 1.

file …

List of files to process. If no files are listed, then input is read from stdin.

For each file in the input file list, the CRC-32 is computed and output. By default, the computation is on the raw byte stream (binary mode). However, if text mode is selected, then text mode translations, e.g., carriage return + newline $\to$ newline conversion, is performed before the CRC-32 computation. Text mode translations usually have no effect on Unix systems. For additional information on text mode, see the Tcl documentation for fconfigure, specifically “-translation auto.”