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AIX find duplicate backup files

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# 1  
Old 01-23-2020
AIX find and delete old backup files
I would like find and delete old backup files in aix. How would I go about doing this? For example:

Code:
server1_1-20-2020
server1_1-21-2020
server1_1-22-2020
server1_1-23-2020
server2_1-20-2020
server2_1-21-2020
server2_1-22-2020
server2_1-23-2020

How would I go about finding and deleting old backup files? I would like to be left with only this after deleting the old backups.

Code:
server1_1-23-2020
server12_1-23-2020

Last edited by cokedude; 01-24-2020 at 02:47 PM..
# 2  
Old 01-24-2020
Duplicate means has the same identical data. From your comment I think you want something else - like the intent - what the file represents.

If you really mean duplicate, a simple checksum cksum will do as a start:
Code:
cksum  server1_1* | sort -n

If you want filetimes or something else please give the specifics.
# 3  
Old 01-24-2020
I guess you mean the file names?
Then consider sort and unique to sort out duplicates.
Show the duplicate file names:
Code:
$ sort your_example | uniq -d
server2_1-23-2020

Show the non-duplicates:
Code:
$ sort your_example | uniq -u
server1_1-20-2020
server1_1-21-2020
server1_1-22-2020
server2_1-20-2020
server2_1-21-2020
server2_1-22-2020

Show each file name once
Code:
$ sort your_example | uniq
$ sort -u your_example
server1_1-20-2020
server1_1-21-2020
server1_1-22-2020
server2_1-20-2020
server2_1-21-2020
server2_1-22-2020
server2_1-23-2020

# 4  
Old 01-24-2020
Quote:
Originally Posted by jim mcnamara
Duplicate means has the same identical data. From your comment I think you want something else - like the intent - what the file represents.

If you really mean duplicate, a simple checksum cksum will do as a start:
Code:
cksum  server1_1* | sort -n

If you want filetimes or something else please give the specifics.
I apologize for the bad title and description. I have updated the title and description.
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