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How to compare two file contents which created within one hour?

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# 1  
Old 07-29-2014
How to compare two file contents which created within one hour?
Hi Gurus,

I need to compare two file contents and log the difference. the detail as below:
in current directory there is file
Code:
 
abc20140728_1020.txt
abc20140728_1110.txt

I need to find the files which created within 60 minutes first then compare the contents.
I am able to use find command find the files but I don't know how to compare these two file contents.

Code:
 
for filename in `find srch_dir -cmin -60 -name abc2014*`
do
here i don't know how to store the first file then use diff $filename1 $filename2
done

Please help me on this issue.

thanks in advance
Last edited by ken6503; 07-29-2014 at 01:18 PM..
# 2  
Old 07-29-2014
I must admit that I don't know either. Perhaps an alternate logic might help though:-
  • List all the files that match your criteria and write them to a file (listfile)
  • Get top line of listfile and set that as your main file (file1)
  • Get all other lines of your listfile and in a loop, compare them to file1
Would that be suitable?

In any case, if you have files a, b, c, d & e though, how will you decide which is the main file to be compared to, i.e. file1




Robin
# 3  
Old 07-29-2014
Assuming that any file is suitable as the file to be compared against all of the others, try something like:
Code:
find srch_dir -cmin -60 -name 'abc2014*' | (
	read file1
	while read file2
	do	diff "$file1" "$file2"
	done
)

This User Gave Thanks to Don Cragun For This Post:
ken6503
# 4  
Old 07-29-2014
Quote:
Originally Posted by Don Cragun
Assuming that any file is suitable as the file to be compared against all of the others, try something like:
Code:
find srch_dir -cmin -60 -name 'abc2014*' | (
    read file1
    while read file2
    do    diff "$file1" "$file2"
    done
)

thanks Don Cragun

my unix is solaris. when I run
Code:
 
find srch_dir -cmin -60 -name

I got error.
any idea how to convert this to Solaris command.

thanks in advance.
# 5  
Old 07-29-2014
Dear ken6503,

It would be helpful if you posted the error.



Robin
# 6  
Old 07-29-2014
As long as you don't run it any day before 1am, you could try something like:
Code:
#!/bin/ksh
IAm=${0##*/}
read x y z <<-EOF
	$(date +'%m%d %H %M%n')
EOF
trap 'rm -f "$IAm.$$"' EXIT
touch -t $(printf '%s%02d%s' $x $((${y#0} - 1)) $z) "$IAm.$$"
find srch_dir -newer "$IAm.$$" -name 'abc2014*' | (
	read file1
	while read file2
	do	diff "$file1" "$file2"
	done
)

Last edited by Don Cragun; 07-29-2014 at 05:55 PM..
This User Gave Thanks to Don Cragun For This Post:
ken6503
# 7  
Old 07-29-2014
Quote:
Originally Posted by rbatte1
Dear ken6503,

It would be helpful if you posted the error.



Robin
Hi Robin

the error as below:
Code:
 
 
find: bad option -cmin
find: [-H | -L] path-list predicate-list

thanks in advance
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