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Re: any program that search for same files?

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On 10/14/18 3:06 PM, Long Wind wrote:
> given two directories, the program can print files that are in both 
> directories
> 
> to make it easy, if file name and size are same, then they are same
> 
> i've to admit my memory is poor, if good, who need such program?
> 
> i'm about to write it in java, it can be completed in a few hours but
> i think there might be simple solution


On 10/14/18 3:19 PM, The Wanderer wrote:
> Sounds like a perfect case for rdfind.


On 10/14/18 3:39 PM, Håkon Alstadheim wrote:
> fdupes or jdupes fit the bill.


On 10/14/18 6:11 PM, Erik Christiansen wrote:
> What I use with full satisfaction is just "diff -qr dir1 dir2"...


On 10/15/18 8:14 AM, Andrew McGlashan wrote:
> diff -s


On 10/16/18 12:53 AM, Long Wind wrote:
> it seems all those packages compare contents of files but my 
> definition of same file is same name and size and should run much 
> fast
> 
> and they seem to search all directories for same files and this is 
> different from my requirement
> 
> my ideal program should take two directories as argument and print 
> files that are in both directories
> 
> i don't care same files within one directory
> 
> my ideal program can also take one directory as argument and print 
> same file in it if more than two directories are given, then first 
> directory is searched, all files that are also in other directories 
> are printed
> 
> it seems i have to write it in java
> 
> is there users' interest for such program?


It sounds like you want a script to meet your specific needs.


It is my belief that writing a general-purpose file system metadata
search utility is a non-trivial task.  Take a look at find(1) to get an
idea of the scope of the most obvious related utility:

     https://www.gnu.org/software/findutils/


Here is a Perl 5 script I wrote years ago to compare the modification 
times of same-named files in two directory trees:

     https://sourceforge.net/projects/dirdiff/

It could be modified to meet your requirements.


I suggest that you start at the small end -- writing scripts to meet 
specific needs:

1.  Pick a scripting language.

2.  Define the requirements of the script.

3.  Design, construct, test, debug, and document the script.

4.  Integrate the script into your system administration processes.


Bonuses include:

1.  Use a version control system.

2.  Use an issue tracking system.


While you could use Java, understand that a Java runtime environment 
must be installed for Java apps to work.  sh, bash, perl, and/or python 
are supported OOTB by many OS distributions, which makes it easier to 
run your scripts inside fresh install, rescue, live, and other 
restricted environments.


David

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Thread

any program that search for same files? Long Wind <longwind2@yahoo.com> - 2018-10-15 00:10 +0200
  Re: any program that search for same files? The Wanderer <wanderer@fastmail.fm> - 2018-10-15 00:20 +0200
    Re: any program that search for same files? Håkon Alstadheim <hakon@alstadheim.priv.no> - 2018-10-15 00:40 +0200
      Re: any program that search for same files? Long Wind <longwind2@yahoo.com> - 2018-10-15 01:00 +0200
        Re: any program that search for same files? The Wanderer <wanderer@fastmail.fm> - 2018-10-15 01:40 +0200
          Re: any program that search for same files? Long Wind <longwind2@yahoo.com> - 2018-10-15 02:20 +0200
      Re: any program that search for same files? Long Wind <longwind2@yahoo.com> - 2018-10-15 01:10 +0200
  Re: any program that search for same files? Erik Christiansen <dvalin@internode.on.net> - 2018-10-15 03:20 +0200
  Re: any program that search for same files? Andrew McGlashan <andrew.mcglashan@affinityvision.com.au> - 2018-10-15 17:20 +0200
    Re: any program that search for same files? Long Wind <longwind2@yahoo.com> - 2018-10-16 10:00 +0200
  Re: any program that search for same files? David Christensen <dpchrist@holgerdanske.com> - 2018-10-17 06:20 +0200
    Re: any program that search for same files? Long Wind <longwind2@yahoo.com> - 2018-10-17 13:20 +0200

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