ADVZIP(1)

✨ NAME ✨

okay so bestie, the manual name is advzip - AdvanceCOMP ZIP Compression Utility 🎀 that's the whole vibe!

🦋 SYNOPSIS 🦋

advzip [-a, --add] [-x, --extract] [-l, --list]
     [-z, --recompress] [-t, --test] [-0, --shrink-store]
     [-1, --shrink-fast] [-2, --shrink-normal] [-3, --shrink-extra]
     [-4, --shrink-insane] [-i, --iter N]
     [-k, --keep-file-time] [-p, --pedantic] [-q, --quiet]
     [-h, --help] [-V, --version] ARCHIVES... [FILES...]

💖 DESCRIPTION 💖

okay so the main purpose of this utility is to recompress and test zip archives so they end up the smallest possible size 🫶 literally iconic.

For recompression, it uses the libdeflate implementation 🌸 this one generally gives 5-10% more compression than the zLib Deflate implementation, and it's also generally faster. no cap 💅

For experimental purposes, there's also the 7-Zip LZMA algorithm, available with the -N option 🧪 but be careful, because the zips it makes are not usable by any other program. To make them usable again, you have to recompress them without the -N option. Generally this algorithm gives 10-20% more compression than the zLib Deflate implementation.

⚠️ bestie, with -N the generated zips WILL NOT BE USABLE by any other program! recompress them without -N before you share them 😭

🌈 OPTIONS 🌈

• -a, --add ARCHIVE FILES... — makes a brand new archive with the files you give it 🎀 you can only specify one archive, so no double-dipping.
• -x, --extract ARCHIVE — extracts everything from the archive you name 📦 again, only one archive allowed.
• -l, --list ARCHIVES... — lists what's inside each archive you pass in 👀
• -z, --recompress ARCHIVES... — recompresses the archives you name ✨ if you use -1, -2, -3, or -4, it keeps the smallest file out of three options: the previous compressed data, the new compression, and the uncompressed format 🧚 if you use -0, the archive is always rewritten with no compression at all.
• -t, --test ARCHIVES... — tests the archives you name 🔍 you can level it up with -p.
• -k, --keep-file-time — when you recompress with -z, this keeps the .zip file's time 🕰️
• -p, --pedantic — be extra picky about zip tests 🙈 when this is on, some more intense integrity checks run, and these usually aren't done by other zip utilities. very main character.
• -0, --shrink-store — turns compression off, so files are just stored 🍓 super handy for expanding archives full of .png and .mp3 files, since those are already compressed and squishing them again is a total waste of time and resources 💀
• -1, --shrink-fast — sets the compression level to "fast" using the zlib compressor ⚡
• -2, --shrink-normal — sets the compression level to "normal" using the libdeflate compressor 💜 this is the default level, so you get it if you don't pick anything!
• -3, --shrink-extra — sets the compression level to "extra" using the 7z compressor 🔥 you can tune its iterations with -i, --iter.
• -4, --shrink-insane — sets the compression level to "insane" using the zopfli compressor 🌋 you can tune its iterations with -i, --iter too.
• -i, --iter N — sets an extra number of iterations for the 7z and zopfli compressors when using -3 and -4 🧮 more iterations usually means better compression, but they can take a lot more time, so try numbers like 10, 15, 20, and so on.

🫶 COPYRIGHT 🫶

this file is Copyright (C) 2002 Andrea Mazzoleni, Filipe Estima 👑 props to the legends who made it!

🔗 SEE ALSO 🔗

check out advpng(1), advmng(1), and advdef(1) next, they're the squad 🦋

That's the whole tea, bestie 💖 you just finished reading the AdvanceCOM...ion Utility(1) page, so you're officially a zip compression expert now 🎀 periodt 💅✨