pdmenu from shells project

对于 CentOS 5，请以根用户 root 运行下面命令：

cd /etc/yum.repos.d/
wget https://download.opensuse.org/repositories/shells/CentOS_5/shells.repo
yum install pdmenu

对于 openSUSE Tumbleweed，请以根用户 root 运行下面命令：

zypper addrepo https://download.opensuse.org/repositories/shells/openSUSE_Tumbleweed/shells.repo
zypper refresh
zypper install pdmenu

对于 15.6，请以根用户 root 运行下面命令：

zypper addrepo https://download.opensuse.org/repositories/shells/15.6/shells.repo
zypper refresh
zypper install pdmenu

对于 15.5，请以根用户 root 运行下面命令：

zypper addrepo https://download.opensuse.org/repositories/shells/15.5/shells.repo
zypper refresh
zypper install pdmenu

对于 openSUSE Leap 15.4，请以根用户 root 运行下面命令：

zypper addrepo https://download.opensuse.org/repositories/shells/openSUSE_Leap_15.4/shells.repo
zypper refresh
zypper install pdmenu

对于 SLE 12 SP1，请以根用户 root 运行下面命令：

zypper addrepo https://download.opensuse.org/repositories/shells/SLE_12_SP1/shells.repo
zypper refresh
zypper install pdmenu