What is cksum?
cksum computes a cyclic redundancy check (CRC) checksum for files and counts the number of bytes of a file.
2 cksum Examples
1. Find the cksum of a file
The cksum command displays the calculated 32 bit CRC code and also count the number of bytes of the input file.
$ ls -l sample.txt -rw-r--r-- 1 root root 91 2011-01-05 03:44 sample.txt $ cksum sample.txt 3704359389 91 sample.txt
2. Check whether two files are identical
You may find out whether two files are identical by checking the CRC of both the files as follows,
# cksum file1.txt file2.txt 3704359389 91 file1.txt 3704359389 91 file2.txt
Normally, when the file gets copied to remote system, you might do the CRC matching between the source file and the destination file to ensure full copy.
Syntax and Options
|Short Option||Long Option||Option Description|
|–help||to display help page and exit|
|–version||to display the version information and exit|