Jigdo

Jigdo（"Jigsaw download"，曲線下載）是為Debian套件設計的下載工具，可以從幾個鏡像站點下載不同的文件，然後再生成一個CD image。

Jigdo的標準程序包括一個jigdo-file工具。用戶要收集一個CD image，先得下載一個非常小的imagename.jigdo文件。jigdo-file工具就將這個文件作為參量，從網絡上獲取相應的文件：imagename.template和一系列.deb包（在.jigdo文件中已經列出）。然後通過mkisofs工具生成一個ISO image。

Jigdo was implemented in Debian in order to reduce the need to have many CD image mirror sites, locations with sufficient disk space and bandwidth to serve numerous 650 MB files (and in more recent times, 4.7 GB files for DVD images). Instead, Jigdo files allow mirrors to carry the regular Debian archive, where packages are not grouped together in image files and instead kept separately where they're also apt-gettable, and still allow for the making of CD/DVD images.

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