10-28-2004
Quote:
Originally posted by RTM
Why didn't you try it to see???
You can't run checksum on a directory (or I couldn't).
To do a checksum on the files in the directory,
$ sum ./directory/*.*
Note that it won't do hidden files.
LOL..
I did try it. It worked for me.
I'm running digital unix tru64 4.0f.
%cksum dir_A
% 12345678 8908 dir_A
I changed a file in dir_A and got another number.
I was just curious if the number computed can be reliable or am I missing something...
Thanks for the replies...
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LEARN ABOUT OPENSOLARIS
sum
sum(1) User Commands sum(1)
NAME
sum - print checksum and block count for a file
SYNOPSIS
sum [-r] [file]...
DESCRIPTION
The sum utility calculates and prints a 16-bit checksum for the named file and the number of 512-byte blocks in the file. It is typically
used to look for bad spots, or to validate a file communicated over some transmission line.
OPTIONS
The following options are supported:
-r Use an alternate (machine-dependent) algorithm in computing the checksum.
OPERANDS
The following operands are supported:
file A path name of a file. If no files are named, the standard input is used.
USAGE
See largefile(5) for the description of the behavior of sum when encountering files greater than or equal to 2 Gbyte ( 2^31 bytes).
ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of sum: LC_CTYPE, LC_MESSAGES, and
NLSPATH.
EXIT STATUS
The following exit values are returned.
0 Successful completion.
>0 An error occurred.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------------------------------------+
| ATTRIBUTE TYPE ATTRIBUTE VALUE |
|Availability SUNWesu |
|CSI Enabled |
+-----------------------------------------------------------+
SEE ALSO
cksum(1), sum(1B), wc(1), attributes(5), environ(5), largefile(5)
DIAGNOSTICS
Read error is indistinguishable from end of file on most devices. Check the block count.
NOTES
Portable applications should use cksum(1).
sum and usr/ucb/sum (see sum(1B)) return different checksums.
SunOS 5.11 7 Nov 1995 sum(1)