1. Download the file
curl -O http://man.linuxde.net/text.iso #O大写，不用O只是打印内容不会下载
wget http://www.linuxde.net/text.iso #不用参数，直接下载文件
2. Download the file and rename it
curl -o rename.iso http://man.linuxde.net/text.iso #o小写
wget -O rename.zip http://www.linuxde.net/text.iso #O大写
3. Resume uploading
curl -O -C -URL http://man.linuxde.net/text.iso #C大写
wget -c http://www.linuxde.net/text.iso #c小写
4. Speed limit download
curl --limit-rate 50k -O http://man.linuxde.net/text.iso
wget --limit-rate=50k http://www.linuxde.net/text.iso
5. Display response header information
curl -I http://man.linuxde.net/text.iso
wget --server-response http://www.linuxde.net/test.iso
6.wget tool-package download website
wget --mirror -p --convert-links -P /var/www/html http://man.linuxde.net/