Linux systems rely on TAR for grouping files and preserving permissions, while 7Z is preferred for maximum space saving. This guide compares their structures and best use cases.
7Z uses LZMA/LZMA2 to pack files tightly, utilizing large dictionary sizes. TAR has no compression overhead, making it extremely fast to group directory structures.
| Feature | TAR Archive | 7Z Archive |
|---|---|---|
| Compression | No (bundling only) | Yes (LZMA/LZMA2 standard) |
| Unix Permissions | Preserved natively | Not preserved natively |
| Speed | Instant (no byte calculation) | Slow compression, fast decompression |
| Structure | Sequential blocks | Indexed central headers |
| Licensing | POSIX standard | Open Source (GNU LGPL) |
TAR is native on Unix-like operating systems. 7Z is native to the 7-Zip software but supported globally on PC tools and web decoders.
7Z supports AES-256 password security and header encryption. TAR has no encryption standards.
TAR was created to write files to tape drives sequentially. Compression is added by piping the TAR to tools like Gzip or Xz.
Not natively. To preserve Linux permissions, you should bundle files in a TAR first, and then compress the TAR file into a 7Z archive.
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This basic version supports standard, unencrypted ZIP, RAR, 7z, and TAR archives. Support for password-protected archives is not currently active.
The file size exceeds the supported safety limit.