forked from https://gist.github.com/fire1ce/65d3e370120750a5deb283abe1d74491
opkg update && opkg install ca-certificates ca-bundle zsh curl git-http
sh -c "$(curl -fsSL https://raw.githubusercontent.com/robbyrussell/oh-my-zsh/master/tools/install.sh)"
#sed -i -- 's:/bin/ash:/usr/bin/zsh:g' /etc/passwd
which zsh && sed -i -- 's:/bin/ash:'`which zsh`':g' /etc/passwd
# -- reboot, all done.