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It works on Windows, Linux, and Mac systems, so you should be covered on all of your platforms.
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I feel good knowing that 7-Zip is a free, open source utility that requires no fees or registration to use.
7-Zip's simplicity, speed, compression, and encryption make it a must-have for sysadmins who need those features for your archives. Your directories and files are intact with the proper permissions. Now, untar the tarred files in the usual way.
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Decryptionįirst, decrypt the archive from the compressed, encrypted 7z file and supply your encryption password.
Generically, this is my archive and encrypt command: $ tar -cf directory.tar
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I don't supply any special compression switches, but I do turn on header encryption, and I always supply a strong password (encryption key) for each archive. The following example is my standard one for encrypting a tarball. You should turn on data and header encryption (-mhe=on) so that no one can see your file list in the archive file before entering the password (key). You don't need any extra settings to obtain that encryption level. 7z format are encrypted with AES-256 encryption by default. This installs p7zip, p7zip-plugins, and p7zip-doc from the EPEL repository. I use the * to download every package related to 7-Zip.
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To grab the entire suite of 7-Zip plugins and documentation along with the main 7-Zip package, use the following command: # dnf install -y p7zip* Installationħ-Zip isn't a base product, so you'll have to install it.
On Linux/Unix, in order to backup directories, you must use tar. On the man page for 7-Zip, you find the following warning:ĭO NOT USE the 7-Zip format for backup purposes on Linux/Unix because 7-zip does not store the owner/group of the file. While 7-Zip's encryption and compression features are good, its backup features are weak. Check the man page for more information on compression settings. There are several switches and configurations available to obtain different compression levels for your archives. But this article focuses on encryption rather than compression.