!! wget 
! COMMAND OPTION
https://www.atmarkit.co.jp/ait/articles/1606/20/news024.html

! PROXT

 HTTP の PROXY
 wget -e HTTP_PROXY=http://192.168.1.10:8080 http://down.load.host/down_load.zip
 
 HTTPS の PROXY
 wget -e HTTPS_PROXY=http://192.168.1.10:8080 https://down.load.host/down_load.zip

! List-File
 wget -e HTTP_PROXY=http://192.168.1.10:8080 -c -i LlistFile.txt
 ## -c は -continue

 LlistFile.txt
 http://ftp-srv2.kddilabs.jp/Linux/packages/CentOS/7.8.2003/isos/x86_64/CentOS-7-x86_64-DVD-2003.iso 
 http://ftp-srv2.kddilabs.jp/Linux/packages/CentOS/6.10/isos/x86_64/CentOS-6.10-x86_64-bin-DVD1.iso
 http://ftp-srv2.kddilabs.jp/Linux/packages/CentOS/6.10/isos/x86_64/CentOS-6.10-x86_64-bin-DVD1.iso
 http://ftp-srv2.kddilabs.jp/Linux/packages/CentOS/6.10/isos/i386/CentOS-6.10-i386-bin-DVD1.iso
 http://ftp-srv2.kddilabs.jp/Linux/packages/CentOS/7.8.2003/isos/x86_64/CentOS-7-x86_64-DVD-2003.iso 
 
 http://ftp-srv2.kddilabs.jp/Linux/packages/opensuse/distribution/leap/15.2/iso/openSUSE-Leap-15.2-DVD-x86_64.iso 
 http://ftp-srv2.kddilabs.jp/Linux/packages/opensuse/distribution/leap/15.2/iso/openSUSE-Leap-15.2-DVD-x86_64.iso.sha256 
 
 http://ftp-srv2.kddilabs.jp/Linux/packages/opensuse/distribution/leap/15.2/iso/openSUSE-Leap-15.2-NET-x86_64.iso 
 
 http://ftp-srv2.kddilabs.jp/Linux/packages/opensuse/distribution/leap/15.2/iso/openSUSE-Leap-15.2-NET-x86_64.iso.sha256 

!CheckSUM

 CentOS> sha256sum -c ./openSUSE-Leap-15.2-DVD-x86_64.iso.sha256 
 openSUSE-Leap-15.2-DVD-x86_64.iso: 完了
 sha256sum: 警告: 書式が不適切な行が 14 行あります