SRCCRC(8) System Manager's Manual SRCCRC(8)NAME
srccrc - compute CRC checksums of the entire source tree
SYNOPSIS
srccrc
OPTIONS EXAMPLES DESCRIPTION
Srccrc traverses the entire /usr/include and /usr/src tree to run the crc command on all files found. The result is a long list of file-
names with their checksums. The filenames are relative to /usr.
The command makes an effort to remove most junk files such as .o, .bak and files in bin directories. It cannot find single binaries how-
ever, so you will have to run make clean in /usr/src to be able to make a crc list that contains only source files.
Two crc files can be compared easily with the diff command. A crc list of the original source tree can be found in /usr/src/crclist.
SEE ALSO crc(1).
SRCCRC(8)
Check Out this Related Man Page
CRC32(3) User Contributed Perl Documentation CRC32(3)NAME
String::CRC32 - Perl interface for cyclic redundency check generation
SYNOPSIS
use String::CRC32;
$crc = crc32("some string");
$crc = crc32("some string", initvalue);
$somestring = "some string";
$crc = crc32($somestring);
open(SOMEFILE, "location/of/some.file");
$crc = crc32(*SOMEFILE);
close(SOMEFILE);
DESCRIPTION
The CRC32 module calculates CRC sums of 32 bit lenghts. It generates the same CRC values as ZMODEM, PKZIP, PICCHECK and many others.
Despite its name, this module is able to compute the checksum of files as well as strings.
EXAMPLES
$crc = crc32("some string");
results in the same as
$crc = crc32(" string", crc32("some"));
This is useful for subsequent CRC checking of substrings.
You may even check files:
open(SOMEFILE, "location/of/some.file");
$crc = crc32(*SOMEFILE);
close(SOMEFILE);
A init value may also been supplied in the above example.
AUTHOR
Soenke J. Peters <peters__perl@opcenter.de>
Please be so kind as to report any bugs/suggestions to the above address.
COPYRIGHT
CRC algorithm code taken from CRC-32 by Craig Bruce. The module stuff is inspired by a similar perl module called String::CRC by David
Sharnoff & Matthew Dillon. Horst Fickenscher told me that it could be useful to supply an init value to the crc checking function and so I
included this possibility.
The author of this package disclaims all copyrights and releases it into the public domain.
perl v5.16.3 2005-04-04 CRC32(3)
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