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Full Discussion: ksh scripting SSH to Compare File Sizes
Top Forums Shell Programming and Scripting ksh scripting SSH to Compare File Sizes Post 303025349 by Abstract3000 on Wednesday 31st of October 2018 08:39:00 AM
Old 10-31-2018
I appreciate the advice, I was kind of thinking the same thing myself while looking at it that I needed some sort of for loop to iterate through the servers executing the same command while storing file locations in variables and simply comparing each server to the 1st. I don't really have any idea of how i could apply a for loop to ssh multiple servers that were in an Array for instance. Though I did rework the code a bit and came up with the following solution, though you couldn't be as specific in your output you could easily spot an error.

Code:
#!/bin/ksh


FILE1=/root/directory1/files/file1.fil
FILE2=/root/directory2/files/file2.fil
FILESZ1==$(stat -c%s "$FILE1")
FILESZ2==$(stat -c%s "$FILE2")

filecheck() {
CHKFILE1=$(stat -c%s "$FILE1")
CHKFILE2=$(stat -c%s "$FILE2")
if [[ $FILESZ1 = $CHKFILE1 ]]; then
	print "file sizes match"
else
	print "file sizes do not match"
fi
if [[ $FILESZ2 = $CHKFILE3 ]]; then
	print "file sizes match"
else
	print "file sizes do not match"
fi
}

ssh user@server2 "$(typeset -f filecheck); filecheck;
ssh user@server3 "$(typeset -f filecheck); filecheck;
ssh user@server4 "$(typeset -f filecheck); filecheck;

Would the following code do the trick or am I missing something?
Thanks for the suggestions.
 

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LEARN ABOUT CENTOS

comm

COMM(1) 							   User Commands							   COMM(1)

NAME

       comm - compare two sorted files line by line

SYNOPSIS

       comm [OPTION]... FILE1 FILE2

DESCRIPTION

       Compare sorted files FILE1 and FILE2 line by line.

       With  no  options,  produce three-column output.  Column one contains lines unique to FILE1, column two contains lines unique to FILE2, and
       column three contains lines common to both files.

       -1     suppress column 1 (lines unique to FILE1)

       -2     suppress column 2 (lines unique to FILE2)

       -3     suppress column 3 (lines that appear in both files)

       --check-order
	      check that the input is correctly sorted, even if all input lines are pairable

       --nocheck-order
	      do not check that the input is correctly sorted

       --output-delimiter=STR
	      separate columns with STR

       --help display this help and exit

       --version
	      output version information and exit

       Note, comparisons honor the rules specified by 'LC_COLLATE'.

EXAMPLES

       comm -12 file1 file2
	      Print only lines present in both file1 and file2.

       comm -3 file1 file2
	      Print lines in file1 not in file2, and vice versa.

       GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report comm translation bugs to <http://translationproject.org/team/>

AUTHOR

       Written by Richard M. Stallman and David MacKenzie.

COPYRIGHT

       Copyright (C) 2013 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       join(1), uniq(1)

       The full documentation for comm is maintained as a Texinfo manual.  If the info and comm programs are properly installed at your site,  the
       command

	      info coreutils 'comm invocation'

       should give you access to the complete manual.

GNU coreutils 8.22						     June 2014								   COMM(1)
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