opkg update 做了什么？

lhbc

2016-06-04 22:17:03 +08:00

opkg update 就是下载仓库里的软件包信息，等同以下脚本

````
#!/bin/sh

architecture=${1-ramips}
chip=${2-mt7620}

wget "https://downloads.openwrt.org/chaos_calmer/15.05/${architecture}/${chip}/packages/base/Packages.gz" -O /var/opkg-lists/chaos_calmer_base
wget "https://downloads.openwrt.org/chaos_calmer/15.05/${architecture}/${chip}/packages/base/Packages.sig" -O /var/opkg-lists/chaos_calmer_base.sig
wget "https://downloads.openwrt.org/chaos_calmer/15.05/${architecture}/${chip}/packages/luci/Packages.gz" -O /var/opkg-lists/chaos_calmer_luci
wget "https://downloads.openwrt.org/chaos_calmer/15.05/${architecture}/${chip}/packages/luci/Packages.sig" -O /var/opkg-lists/chaos_calmer_luci.sig
wget "https://downloads.openwrt.org/chaos_calmer/15.05/${architecture}/${chip}/packages/management/Packages.gz" -O /var/opkg-lists/chaos_calmer_management
wget "https://downloads.openwrt.org/chaos_calmer/15.05/${architecture}/${chip}/packages/management/Packages.sig" -O /var/opkg-lists/chaos_calmer_management.sig
wget "https://downloads.openwrt.org/chaos_calmer/15.05/${architecture}/${chip}/packages/packages/Packages.gz" -O /var/opkg-lists/chaos_calmer_packages
wget "https://downloads.openwrt.org/chaos_calmer/15.05/${architecture}/${chip}/packages/packages/Packages.sig" -O /var/opkg-lists/chaos_calmer_packages.sig
wget "https://downloads.openwrt.org/chaos_calmer/15.05/${architecture}/${chip}/packages/routing/Packages.gz" -O /var/opkg-lists/chaos_calmer_routing
wget "https://downloads.openwrt.org/chaos_calmer/15.05/${architecture}/${chip}/packages/routing/Packages.sig" -O /var/opkg-lists/chaos_calmer_routing.sig
wget "https://downloads.openwrt.org/chaos_calmer/15.05/${architecture}/${chip}/packages/telephony/Packages.gz" -O /var/opkg-lists/chaos_calmer_telephony
wget "https://downloads.openwrt.org/chaos_calmer/15.05/${architecture}/${chip}/packages/telephony/Packages.sig" -O /var/opkg-lists/chaos_calmer_telephony.sig
````

luofeiyu

2016-06-04 22:52:46 +08:00

请注意
1 opkg update
2 opkg install tcpdump
3 opkg install blkid
4 opkg update
5 opkg install blkid
这 5 条命令之间没有间隔，连续执行的。
opkg update 已经做过一次了，为何还要在安装完一个软件后，立即再来一次？
我不理解。

airqj

2016-06-05 00:23:03 +08:00

@luofeiyu 多此一举而已

luofeiyu

2016-06-05 07:16:51 +08:00

不是多此一举，我发现，很多情况下，必须再次来个 opkg update ，否则后面的安装无法完成。

ayaseangle

2016-06-05 07:24:16 +08:00

更新软件包索引。。

McContax

2016-06-05 07:28:38 +08:00

为什么不把第三条的报错发上来？。。

cye3s

2016-06-05 08:10:28 +08:00

也可能是第一次 opkg update 某些库索引没下载成功，国外地址嘛

lee015

2016-06-05 09:55:51 +08:00

清华开源镜像有 openwrt 了

wxg4net

2016-06-05 10:11:25 +08:00

没有遇到过. 难道是 flash 出坏块了？。我的 wndr4300 那个不能正常使用的 90M 空间，还没怎么用呢就有多达 200 多的坏块了，基本上不能放文件了。目前因为这个吓的我不敢继续折腾了

crystom

2016-06-05 11:55:04 +08:00

没遇到过这种情况， opkg update 需要在重启之后重新执行，但是不是装一次就执行一次