创建仓库，生成 Packages.gz

git clone git://git.yoctoproject.org/opkg-utils
cd opkg-utils
./opkg-make-index /home/xxx/repo/packages/ > /homexxx/repo/packages/Packages
cd /home/xxx/repo/packages
gzip Packages

SSH 连接路由器后执行命令
查看 OPKG 源配置:

cat /etc/opkg.conf

编辑源:

vim /etc/opkg.conf

更新包:

opkg update

查看已安装包:

opkg list-installed

查询目标包:

opkg list | grep luci-theme-nonnicolor

安装目标包:

opkg install luci-theme-nonnicolor

删除目标包:

opkg remove

也可使用我的源地址
x86:

src/gz openwrt_core https://nonnix.cn/repo/all/targets/x86/64/packages
src/gz openwrt_base https://nonnix.cn/repo/all/packages/x86_64/base
src/gz openwrt_luci https://nonnix.cn/repo/all/packages/x86_64/luci
src/gz openwrt_packages https://nonnix.cn/repo/all/packages/x86_64/packages
src/gz openwrt_routing https://nonnix.cn/repo/all/packages/x86_64/routing
src/gz openwrt_telephony https://nonnix.cn/repo/all/packages/x86_64/telephony

MT7621A:

src/gz openwrt_core https://nonnix.cn/repo/all/targets/ramips/mt7621/packages
src/gz openwrt_base https://nonnix.cn/repo/all/packages/mipsel_24kc/base
src/gz openwrt_luci https://nonnix.cn/repo/all/packages/mipsel_24kc/luci
src/gz openwrt_packages https://nonnix.cn/repo/all/packages/mipsel_24kc/packages
src/gz openwrt_routing https://nonnix.cn/repo/all/packages/mipsel_24kc/routing
src/gz openwrt_telephony https://nonnix.cn/repo/all/packages/mipsel_24kc/telephony

经常会有依赖错误问题，可以尝试把各种包都放到opkg软件源里，方便安装依赖
在 /etc/opkg.d 里的每个文件都加入一行指令:

find /etc/opkg.d/ -name '*.conf' | xargs sed -i '2isrc/gz openwrtio https://nonnix.com/repo/packages/x86_64/packages'