p7zip 命令

常用示例

说明

p7zip is the Unix port of 7-Zip, providing high-ratio compression. The 7z format typically achieves 30-70% better compression than ZIP using LZMA/LZMA2 algorithms. The package provides three commands: 7z (full-featured), 7za (standalone), and 7zr (reduced, 7z format only). Most users use 7z or 7za. Archive format support includes: 7z, ZIP, GZIP, BZIP2, XZ, TAR, and extraction from many others (RAR, CAB, ISO, DMG, etc.). The -t option overrides automatic format detection. Solid archives (-ms=on) compress files as a single block, improving compression when archiving many similar files. However, this means extracting one file requires decompressing all preceding files. Encryption uses AES-256. The -mhe option encrypts filenames in addition to content, hiding what's in the archive. Password can be provided on command line (visible in process list) or prompted interactively.

参数

a

Add files to archive.

x

Extract with full paths.

e

Extract to current directory.

l

List archive contents.

t

Test archive integrity.

d

Delete from archive.

u

Update files in archive.

-mx= _LEVEL_

Compression level (0=store, 1=fastest, 5=normal, 7=maximum, 9=ultra).

-p_PASSWORD_

Set password (no space between switch and value; prompts interactively if omitted).

-mhe=on

Encrypt header so filenames inside the archive are also hidden.

-o_DIR_

Output directory for `x`/`e` (no space between `-o` and the path).

-r

Recurse subdirectories.

-y

Assume yes to all prompts.

-t _TYPE_

Archive type: 7z, zip, tar, gzip, bzip2.

-v _SIZE_

Create volumes of specified size.

-m0= _METHOD_

Compression method: lzma, lzma2, bzip2, ppmd.

-ms=on

Enable solid archive mode.