unalz

ALZ archive extractor written in Rust.

Usage

unalz archive.alz                 # extract all files
unalz archive.alz file.txt        # extract a specific file
unalz -d output/ archive.alz      # extract into a directory
unalz -P SECRET archive.alz       # extract an encrypted archive
unalz -l archive.alz              # list contents
unalz -p archive.alz file.txt     # extract to stdout
cat archive.alz | unalz -l -      # read from stdin

Option		Description
-l	--list	list contents instead of extracting
-d	--output-dir DIR	extract into DIR (default: current directory)
-p	--pipe	extract to stdout
-P	--password PW	decryption password
-q	--quiet	suppress progress messages
-h	--help	show help and exit
-V	--version	show version and exit

Install

cargo install unalz

Supported Features

Compression

• Store (no compression)
• Deflate
• Bzip2 (ALZ-modified)

Encryption

• ZipCrypto (traditional PKWARE)

Archive types

• Split (multi-volume) archives (.alz, .a00, .a01, ...)

Other

• CP949/EUC-KR filename decoding to UTF-8
• CRC32 verification
• DOS timestamp preservation
• Truncated archives (a missing volume, an interrupted download) still yield every complete file, with a warning

Exit Codes

Code	Meaning
0	everything extracted
1	extracted what was there, archive truncated
2	failed

Docs

https://github.com/alkegi/docs

References

• kippler/unalz

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Part of the alkegi (알깨기) project.