The opkg utility (an ipkg fork) is a lightweight package manager used to download and install OpenWrt packages from local package repositories or ones located in the Internet.
Opkg attempts to resolve dependencies with packages in the repositories - if this fails, it will report an error, and abort the installation of that package.
On MediaTek LinkIt Smart 7688 board:
-> Add opkg source
root@mylinkit:/# vi /etc/opkg.conf
src/gz chaos_calmer https://downloads.openwrt.org/chaos_calmer/15.05/ramips/mt7628/packages/packages
dest root /
dest ram /tmp
lists_dir ext /var/opkg-lists
option overlay_root /overlay
option check_signature 1
-> Update opkg source
root@mylinkit:/# opkg update
-> Install package
root@mylinkit:/# opkg install mpd-full
usage: opkg [options...] sub-command [arguments...]
where sub-command is one of:
Package Manipulation:
update Update list of available packages
upgrade <pkgs> Upgrade packages
install <pkgs> Install package(s)
configure <pkgs> Configure unpacked package(s)
remove <pkgs|regexp> Remove package(s)
flag <flag> <pkgs> Flag package(s)
<flag>=hold|noprune|user|ok|installed|unpacked (one per invocation)
Informational Commands:
list List available packages
list-installed List installed packages
list-upgradable List installed and upgradable packages
list-changed-conffiles List user modified configuration files
files <pkg> List files belonging to <pkg>
search <file|regexp> List package providing <file>
find <regexp> List packages whose name or description matches <regexp>
info [pkg|regexp] Display all info for <pkg>
status [pkg|regexp] Display all status for <pkg>
download <pkg> Download <pkg> to current directory
compare-versions <v1> <op> <v2>
compare versions using <= < > >= = << >>
print-architecture List installable package architectures
depends [-A] [pkgname|pat]+
whatdepends [-A] [pkgname|pat]+
whatdependsrec [-A] [pkgname|pat]+
whatrecommends[-A] [pkgname|pat]+
whatsuggests[-A] [pkgname|pat]+
whatprovides [-A] [pkgname|pat]+
whatconflicts [-A] [pkgname|pat]+
whatreplaces [-A] [pkgname|pat]+
Options:
-A Query all packages not just those installed
-V[<level>] Set verbosity level to <level>.
--verbosity[=<level>] Verbosity levels:
0 errors only
1 normal messages (default)
2 informative messages
3 debug
4 debug level 2
-f <conf_file> Use <conf_file> as the opkg configuration file
--conf <conf_file>
--cache <directory> Use a package cache
-d <dest_name> Use <dest_name> as the the root directory for
--dest <dest_name> package installation, removal, upgrading.
<dest_name> should be a defined dest name from
the configuration file, (but can also be a
directory name in a pinch).
-o <dir> Use <dir> as the root directory for
--offline-root <dir> offline installation of packages.
--add-arch <arch>:<prio> Register architecture with given priority
--add-dest <name>:<path> Register destination with given path
Force Options:
--force-depends Install/remove despite failed dependencies
--force-maintainer Overwrite preexisting config files
--force-reinstall Reinstall package(s)
--force-overwrite Overwrite files from other package(s)
--force-downgrade Allow opkg to downgrade packages
--force-space Disable free space checks
--force-postinstall Run postinstall scripts even in offline mode
--force-remove Remove package even if prerm script fails
--force-checksum Don't fail on checksum mismatches
--noaction No action -- test only
--download-only No action -- download only
--nodeps Do not follow dependencies
--nocase Perform case insensitive pattern matching
--size Print package size when listing available packages
--force-removal-of-dependent-packages
Remove package and all dependencies
--autoremove Remove packages that were installed
automatically to satisfy dependencies
-t Specify tmp-dir.
--tmp-dir Specify tmp-dir.
regexp could be something like 'pkgname*' '*file*' or similar
e.g. opkg info 'libstd*' or opkg search '*libop*' or opkg remove 'libncur*'