root@beaglebone:~/debian-wheezy-minimal-armhf-2012-03-29# opkg install u-boot-mkimage dosfstools btrfs-tools pv
Unknown package 'u-boot-mkimage'.
Unknown package 'dosfstools'.
Unknown package 'btrfs-tools'.
Unknown package 'pv'.

Collected errors:
 * opkg_install_cmd: Cannot install package u-boot-mkimage.
 * opkg_install_cmd: Cannot install package dosfstools.
 * opkg_install_cmd: Cannot install package btrfs-tools.
 * opkg_install_cmd: Cannot install package pv.
root@beaglebone:~/debian-wheezy-minimal-armhf-2012-03-29#