Question 112496 in Ubuntu Question posted in
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Compress many files group by month/year with modification/creation on ubuntu

I’ve a SFTP service using ubuntu server now it have many files and take too many space like:

-rwxrwxrwx 1 systemd-network systemd-journal    7190 Jul  1  2020 'document_1.xlsx'
-rw-r--r-- 1 systemd-network systemd-journal    1606 Jul  1  2021 'document_1.csv'
-rw-r--r-- 1 systemd-network systemd-journal    7191 Jul  1  2021 'document_2.xlsx'
-rw-r--r-- 1 systemd-network systemd-journal    1606 Jul  1 03:10 'document_2.csv'
-rw-r--r-- 1 systemd-network systemd-journal    7191 Jul  1 03:10 'document_3.xlsx'
-rwxrwxrwx 1 systemd-network systemd-journal    1606 Aug  1  2020 'document_3.csv'
-rwxrwxrwx 1 systemd-network systemd-journal    7190 Aug  1  2020 'document_4.xlsx'
-rw-r--r-- 1 systemd-network systemd-journal    1606 Aug  1  2021 'document_4.csv'

Now I want optimal space of server but I can’t delete those.
If better can we compress by filetype and/or month/year and/or modification/creation and/or delete.

Example:

document_2021.gzip
document_2021_csv.gzip
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2

Answers


  1. 0

    You gave multiple options for a solution, so here’s a simple one for the first option – To compress files by filetype.
    Of course, please test any commands on sample files before running on your important ones. Also, always have a backup before doing anything like this. But you already knew that.
    You can compress each file by type using the following command from the directory you want to work on:

        find ./ -type f -name "*.xlsx" -exec gzip {} ;

    Depending on how your shell is set up, if you need to end the command with ; or simply ;
    The result will compress your files in place, like document_1.xlsx.gz, document_2.xlsx.gz, etc.

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  2. 0

    Yes, you can string multiple -exec commands after the find by separating with semicolons.
    In this example, I first find all files with .csv extension. Then, get their size with -du (disk usage), followed by a long listing.

        find ./ -type f -name "*.csv" -exec du -sh {}; -exec ls -l {};

    You mentioned possibly using rm like this, and I would highly discourage using rm in a string of -exec commands.
    Only because you wouldn’t want the rm to happen if the previous command failed. So that would be risky.

    I rarely do multiple -exec commands. For stringing many commands together, I’d more likely do that in Python. But if doing just a few commands, I’d just run a separate command for each one I wanted. That allows a chance to inspect the result of one command before running the next.

    What would be the specific commands you are wanting to run together?

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