opkg configuration file resides here:
/etc/opkg.conf
default file content is:
root@OpenWrt:/# cat /etc/opkg.conf src/gz snapshots http://downloads.openwrt.org/snapshots/trunk/ramips/packages dest root / dest ram /tmp lists_dir ext /var/opkg-lists option overlay_root /overlay
When you start up carambola you must update package list. Otherwise you will not see many available packages. This list is saved in /tmp, after you reboot package list is erased. You save some precious space on your carambola.
opkg update
opkg install <package>
opkg remove <package>
opkg remove --autoremove package_name
or remove with all dependent packages
opkg remove --force-removal-of-dependent-packages
opkg list
opkg list_installed
opkg files package_name