使用命令opkg，软件来源是本地仓库或者物联网上仓库，例如：opkg install pstree
用法：
opkg must have one sub-command argument
usage: opkg [options...] sub-command [arguments...]
where sub-command is one of:
Package Manipulation:
update Update list of available packages
upgrade Upgrade installed packages
install <pkgs> Install package(s)
configure <pkgs> Configure unpacked package(s)
remove <pkgs|glob> Remove package(s)
clean Clean internal cache
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|glob> List package providing <file>
find <regexp> List packages with names or descriptionmatching <regexp>
info [pkg|glob] Display all info for <pkg>
status [pkg|glob] 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|glob]+
whatdepends [-A] [pkgname|glob]+
whatdependsrec [-A] [pkgname|glob]+
whatrecommends[-A] [pkgname|glob]+
whatsuggests[-A] [pkgname|glob]+
whatprovides [-A] [pkgname|glob]+
whatconflicts [-A] [pkgname|glob]+
whatreplaces [-A] [pkgname|glob]+
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>
-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
--add-exclude <name> Register package to be excluded from install
--prefer-arch-to-version Use the architecture priority package rather
than the higher version one if more
than one candidate is found.
--combine Combine upgrade and install operations,this
may be needed to resolve dependency issues.
Only available for the internal solver backend.
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 offlinemode
--force-remove Remove package even if prerm script fails
--force-checksum Don't fail on checksum mismatches
--noaction No action -- test only
--size Print package size when listing available packages
--download-only No action -- download only
--nodeps Do not follow dependencies
--no-install-recommends Do not install any recommended packages
--force-removal-of-dependent-packages
Remove package and all dependencies
--autoremove Remove packages that were installed
automatically to satisfy dependencies
-t, --tmp-dir <directory> Specify tmp-dir.
-l, --lists-dir <directory> Specify lists-dir.
--cache-dir <path> Specify cache directory.
--host-cache-dir Don't place cache in offline root dir.
--volatile-cache Use volatile cache.
Volatile cache will be cleared on exit
glob could be something like 'pkgname*' '*file*' or similar
e.g. opkg info 'libstd*' or opkg search '*libop*' or opkg remove 'libncur*'
