我把操作系统从Windows改成了Linux。在Windows中，我安装gitflow没有遇到任何问题。但是我作为Linux的新手，在安装gitflow时卡住了。
我使用了
wget --no-check-certificate -q -O - https://github.com/nvie/gitflow/raw/develop/contrib/gitflow-installer.sh | sudo sh
我也尝试过
wget --no-check-certificate -q -O - https://github.com/nvie/gitflow/raw/develop/contrib/gitflow-installer.sh | sudo bash
但是遇到了这个错误：
woppi@woppi-ThinkCentre-M80:~$ wget --no-check-certificate -q -O -
https://github.com/nvie/gitflow/raw/develop/contrib/gitflow-installer.sh | sudo sh
[sudo] password for woppi:
### gitflow no-make installer ###
Installing git-flow to /usr/local/bin
Cloning repo from GitHub to gitflow
Cloning into gitflow...
error: Failed connect to github.com:80; Connection refused while accessing
http://github.com/nvie/gitflow.git/info/refs
fatal: HTTP request failed
Updating submodules
cd: 78: can't cd to gitflow
fatal: Not a git repository (or any of the parent directories): .git
fatal: Not a git repository (or any of the parent directories): .git
install: cannot stat `gitflow/git-flow': No such file or directory
install: cannot stat `gitflow/git-flow-init': No such file or directory
install: cannot stat `gitflow/git-flow-feature': No such file or directory
install: cannot stat `gitflow/git-flow-hotfix': No such file or directory
install: cannot stat `gitflow/git-flow-release': No such file or directory
install: cannot stat `gitflow/git-flow-support': No such file or directory
install: cannot stat `gitflow/git-flow-version': No such file or directory
install: cannot stat `gitflow/gitflow-common': No such file or directory
install: cannot stat `gitflow/gitflow-shFlags': No such file or directory
我按照 Github 的 git 安装指南和 nvie 的 gitflow 安装指南进行了安装，但我无法确定我错过了什么。非常感谢任何帮助！谢谢！ :)