how about cksum - that is far easier to use. It gives a filesize. Or you can use the check sum, either way.
This code assumes your cksum implmentation gives:
hi all,
in my server there are some specific application files which are spread through out the server... these are spread in folders..sub-folders..chid folders...
please help me, how can i find the total size of these specific files in the server... (3 Replies)
Hi,
Could anyone help me to solve this problem?
I have two files "f1" and "f2" having 2 fields in each, a) file size and b) file name. The data are almost same in both the files except for few and new additional lines. Now, I have to find out and print the output as, the difference in the... (3 Replies)
hi,
Please help me to write a command to delete duplicate lines from a file. And the size of file is 50 MB. How to remove duplicate lins from such a big file. (6 Replies)
Hi !
I wonder if anyone can help on this : I have a directory: /xyz that has the following files:
chsLog.107.20130603.gz
chsLog.115.20130603
chsLog.111.20130603.gz
chsLog.107.20130603
chsLog.115.20130603.gz
As you ca see there are two files that are the same but only with a minor... (10 Replies)
Hi champs,
I have one of the requirement, where I need to compare two files line by line and ignore duplicates. Note, I hav files in sorted order.
I have tried using the comm command, but its not working for my scenario.
Input file1
srv1..development..employee..empname,empid,empdesg... (1 Reply)
Hello,
I have a huge directory (with millions of files) and need to find out duplicates based on BOTH file name and File size.
I know fdupes but it calculates MD5 which is very time-consuming and especially it takes forever as I have millions of files.
Can anyone please suggest a script or... (7 Replies)
Discussion started by: prvnrk
7 Replies
LEARN ABOUT SUSE
cksum
cksum(n) Cyclic Redundancy Checks cksum(n)
__________________________________________________________________________________________________________________________________________________NAME
cksum - Calculate a cksum(1) compatible checksum
SYNOPSIS
package require Tcl 8.2
package require cksum ?1.1.2?
::crc::cksum ?-format format? ?-chunksize size? [ -channel chan | -filename file | string ]
::crc::CksumInit
::crc::CksumUpdate token data
::crc::CksumFinal token
_________________________________________________________________DESCRIPTION
This package provides a Tcl 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? ?-chunksize size? [ -channel chan | -filename file | string ]
The command takes string data or a channel or 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 -channel name
Return a checksum for the data read from a channel. The command will read data from the channel until the eof is true. If you need
to be able to process events during this calculation see the PROGRAMMING INTERFACE section
-filename name
This is a convenience option that opens the specified file, sets the encoding to binary and then acts as if the -channel option had
been used. The file is closed on completion.
-format string
Return the checksum using an alternative format template.
PROGRAMMING INTERFACE
The cksum package implements the checksum using a context variable to which additional data can be added at any time. This is expecially
useful in an event based environment such as a Tk application or a web server package. Data to be checksummed may be handled incrementally
during a fileevent handler in discrete chunks. This can improve the interactive nature of a GUI application and can help to avoid excessive
memory consumption.
::crc::CksumInit
Begins a new cksum context. Returns a token ID that must be used for the remaining functions. An optional seed may be specified if
required.
::crc::CksumUpdate token data
Add data to the checksum identified by token. Calling CksumUpdate $token "abcd" is equivalent to calling CksumUpdate $token "ab"
followed by CksumUpdate $token "cb". See EXAMPLES.
::crc::CksumFinal token
Returns the checksum value and releases any resources held by this token. Once this command completes the token will be invalid. The
result is a 32 bit integer value.
EXAMPLES
% crc::cksum "Hello, World!"
2609532967
% crc::cksum -format 0x%X "Hello, World!"
0x9B8A5027
% crc::cksum -file cksum.tcl
1828321145
% set tok [crc::CksumInit]
% crc::CksumUpdate $tok "Hello, "
% crc::CksumUpdate $tok "World!"
% crc::CksumFinal $tok
2609532967
AUTHORS
Pat Thoyts
BUGS, IDEAS, FEEDBACK
This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category crc of
the Tcllib SF Trackers [http://sourceforge.net/tracker/?group_id=12883]. Please also report any ideas for enhancements you may have for
either package and/or documentation.
SEE ALSO
crc32(n), sum(n)
KEYWORDS
checksum, cksum, crc, crc32, cyclic redundancy check, data integrity, security
COPYRIGHT
Copyright (c) 2002, Pat Thoyts
crc 1.1.2 cksum(n)