從 Debian 下載時有沒有辦法查詢源文件的大小？

當我們跑步時apt，apt-get或者aptitude我們總是知道需要多少空間/以及它的孩子（/home/$username當然除外）。

現在，當我們apt-get source（在使用者空間中）進行操作時，在下載源文件之前無法知道它們的大小，以免在最後一刻遇到任何意外。

我會分享一個真實的例子來描述這個問題。

二進制未知範圍大約是 305 MB 未壓縮 -

[$] aptitude show unknown-horizons

Package: unknown-horizons                
Version: 2014.1+git160920-1
State: installed
Automatically installed: no
Priority: optional
Section: games
Maintainer: Debian Games Team <pkg-games-devel@lists.alioth.debian.org>
Architecture: all
Uncompressed Size: 305 M
Depends: ttf-unifont, python, python-enet, python-fife (>= 0.3.5+git160920), python-yaml, python:any (< 2.8), python:any (>= 2.7.5-5~)
Description: 2D realtime strategy simulation
Unknown Horizons is a 2D realtime strategy simulation with an emphasis on economy and city building. Expand your small settlement to a strong
and wealthy colony, collect taxes and supply your inhabitants with valuable goods. Increase your power with a well balanced economy and with
strategic trade and diplomacy.
Homepage: http://www.unknown-horizons.org

現在，如果我要下載原始碼，它要麼下載整個 305 MB 或更多的未壓縮包，要麼只是下載/debian幾乎不會超過 MB 或更多的目錄。有沒有辦法做到這一點 ？

我猜它要麼需要像apt-file這樣的元數據 -

$ sudo apt-file update 

您可以使用以下命令找出源 tarball 的大小apt-cache showsrc：

$ apt-cache showsrc unknown-horizons
Package: unknown-horizons
Binary: unknown-horizons
Version: 2014.1+git160920-1
Maintainer: Debian Games Team <pkg-games-devel@lists.alioth.debian.org>
Uploaders: Christoph Egger <christoph@debian.org>
Build-Depends: debhelper (>= 10), dh-python, docbook-xml, docbook-xsl, imagemagick, intltool, python, xsltproc
Architecture: all
Standards-Version: 3.9.8
Format: 3.0 (quilt)
Files:
152652f8ecb6961a5f02d3cab67b8cfa 2290 unknown-horizons_2014.1+git160920-1.dsc
bec6e49f621f3f961454cf41c7e13346 197217496 unknown-horizons_2014.1+git160920.orig.tar.xz
dccaafd51d0fbe3aaebe874715bc1d93 12512 unknown-horizons_2014.1+git160920-1.debian.tar.xz
Vcs-Browser: https://anonscm.debian.org/cgit/pkg-games/unknown-horizons.git
Vcs-Git: https://anonscm.debian.org/git/pkg-games/unknown-horizons.git
Checksums-Sha256:
af9fc7592567b75fa84189ca4e823df103e74fcb51e3fe34ea1162a53d08434d 2290 unknown-horizons_2014.1+git160920-1.dsc
9342154d2ede6e152175c1c69d84f3a51ba2704a77a286103590da40f0d02482 197217496 unknown-horizons_2014.1+git160920.orig.tar.xz
c6db7500f4dfe4a544ae660f92dd9acdc8248ecdc798a45d4bce0be6992d8a6f 12512 unknown-horizons_2014.1+git160920-1.debian.tar.xz
Homepage: http://www.unknown-horizons.org
Package-List: 
unknown-horizons deb games optional arch=all
Directory: pool/main/u/unknown-horizons
Priority: source
Section: games

注意Files:條目：.origtarball（包含上游源）大小為 188MiB，.debiantarball 為 12KiB。這並沒有告訴您提取 tarball 需要多少空間，但它提供了一些指示。

您可以debian通過僅下載 tarball 來僅下載目錄，.debian無論是從源包的頁面，還是使用apt-get source --diff-only.

引用自：https://unix.stackexchange.com/questions/338583