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Different ways to check a file

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# 1  
Old 01-05-2018
Different ways to check a file
to get the checksum of a file on unix systems, you can just use the "cksum" command.

i discovered there are some watered down versions of unix systems i have to do some work on. surprisingly, these systems have perl installed on them and awk.

so if the cksum command is not available on a system, how else can someone get the cksum of a file with either perl or awk, using their built in functions.?
# 2  
Old 01-05-2018
Since you are mentioning cksum, I assume that you mean the CRC checksum.

Look at this article for a Pure-Perl implementation:

Perl-only CRC32 function (without C code)

Make sure that you don't mix the CRC calculation by cksum and your Perl implementation. If you go for the Perl way, use this one consistently.
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