The 7z command is a powerful archiving tool that supports multi-threaded compression (LZMA2) and split archiving. Here is a write-up summarizing key technical considerations when using 7z:

7z can be used to archive the contents of block devices, such as /dev/sda1 , by piping data from cat or similar commands. Typical Scenarios

Tell gzip/bzip2/7z/etc not to compress already-compressed files?

K42.7z May 2026

The 7z command is a powerful archiving tool that supports multi-threaded compression (LZMA2) and split archiving. Here is a write-up summarizing key technical considerations when using 7z:

7z can be used to archive the contents of block devices, such as /dev/sda1 , by piping data from cat or similar commands. Typical Scenarios K42.7z

Tell gzip/bzip2/7z/etc not to compress already-compressed files? The 7z command is a powerful archiving tool