Sorry过回想起来点，发的零零散散，你说了要看图或下载的

IrfanView download | SourceForge.net
https://sourceforge.net/projects/irfanview
Oct 23, 2016 · IrfanView. IrfanView is a fast and compact image viewer/converter. It is trying to be simple for beginners and powerful for professionals. It supports file formats and features. Features include: multi-language support, Thumbnail option, Painting, slideshow, toolbar skins, fast directory browsing, batch conversion/editing, multipage editing, file search, change color depth, scanning, …
    User rating: 4.8/5
    Ratings: 6
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    Operating System: Windows
我一直用这个看图，你可以不用管那么多格式

下载：wget, curl, netcat

Wget - GNU Project - Free Software Foundation
www.gnu.org/software/wget

GNU Wget is a free software package for retrieving files using HTTP, HTTPS, FTP and FTPS the most widely-used Internet protocols. It is a non-interactive commandline tool, so it may easily be called from scripts, cron jobs, terminals without X-Windows support, etc.

curl
https://curl.haxx.se

curl is used in command lines or scripts to transfer data. It is also used in cars, television sets, routers, printers, audio equipment, mobile phones, tablets, settop boxes, media players and is the internet transfer backbone for thousands of software applications affecting billions of humans daily.

The GNU Netcat -- Official homepage
netcat.sourceforge.net

Netcat is a featured networking utility which reads and writes data across network connections, using the TCP/IP protocol. It is designed to be a reliable "back-end" tool that can be used directly or easily driven by other programs and scripts.
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