sam在看相關packagemanager**時，無意中發現android 下提供乙個pm命令，通常放在/system/bin/下。這個命令與package有關，且非常實用。所以研究之。
0. usage：
usage: pm [list|path|install|uninstall]
pm list packages [-f]
pm list permission-groups
pm list permissions [-g] [-f] [-d] [-u] [group]
pm list instrumentation [-f] [target-package]
pm list features
pm path package
pm install [-l] [-r] [-t] [-i installer_package_name] [-s] [-f] path
pm uninstall [-k] package
pm enable package_or_component
pm disable package_or_component
pm setinstalllocation [0/auto] [1/internal] [2/external]
the list packages command prints all packages.
options:
-f: see their associated file.
the list permission-groups command prints all known
permission groups.
the list permissions command prints all known
permissions, optionally only those in group.
options:
-g: organize by group.
-f: print all information.
-s: short summary.
-d: only list dangerous permissions.
-u: list only the permissions users will see.
the list instrumentation command prints all instrumentations,
or only those that target a specified package.
options:
-f: see their associated file.
the list features command prints all features of the system.
the path command prints the path to the .apk of a package.
the install command installs a package to the system.
options:
-l: install the package with forward_lock.
-t: allow test .apks to be installed.
-i: specify the installer package name.
-s: install package on sdcard.
-f: install package on internal flash.
the uninstall command removes a package from the system. options:
-k: keep the data and cache directories around.
after the package removal.
the enable and disable commands change the enabled state of
a given package or component (written as "package/class").
the getinstalllocation command gets the current install location
0 [auto]: let system decide the best location
1 [internal]: install on internal device storage
2 [external]: install on external media
the setinstalllocation command changes the default install location
0 [auto]: let system decide the best location
1 [internal]: install on internal device storage
2 [external]: install on external media
1. 具體使用方法
：1.1：察看已安裝的包：
pm list package
此時則顯示所有已
經安裝的包名。
pm list package -f
也顯示associated檔案所在目錄(即儲存的apk檔案)
1.2：察看已知的許可權組：
pm list permission-groups
1.3：察看所有已知的許可權
：pm list permissions
1.4：
列出所有硬體相關資訊
：pm list features
結果通常類似：
feature:reqglesversion=0x20000
feature:android.hardware.bluetooth
feature:android.hardware.camera
feature:android.hardware.location
feature:android.hardware.location.network
feature:android.hardware.microphone
feature:android.hardware.sensor.accelerometer
feature:android.hardware.sensor.compass
feature:android.hardware.touchscreen
feature:android.hardware.wifi
1.5：列出指定包名的
associated
檔案 (apk存檔檔案)所在：
例如：pm path com.tdijoy.fane
package:/mnt/asec/com.tdijoy.fane-1/pkg.apk
1.6: 安裝apk：
pm install [-l] [-r] [-t] [-i installer_package_name] [-s] [-f] path
path 指 apk檔案絕對路徑和檔名。
例如：pm install /data/3dijoy_fane.apk
這幾個引數很有用：
-r: 安裝乙個已經安裝的apk，保持其資料不變。
-i：指定安裝的包名。(沒試出來)
-s: 安裝到sdcard上
。-f: 安裝到內部flash上。
1.6：解除安裝apk：
pm uninstall 包名。
例如：pm uninstall com.tdijoy.fane
1.7: 得到和設定預設安裝位置：
the getinstalllocation command gets the current install location
0 [auto]: let system decide the best location
1 [internal]: install on internal device storage
2 [external]: install on external media
the setinstalllocation command changes the default install location
0 [auto]: let system decide the best location
1 [internal]: install on internal device storage
2 [external]: install on external media
pm getinstalllocation
得到預設的安裝位置。
設定：pm setinstalllocation <0|1|2>
0: 自動。
1：內部flash。
2：擴充套件儲存裝置。
例項：如何在海信2.2 stb上將apk安裝到u盤中：
sam首先嘗試使用：
pm setinstalllocation 2
之後安裝之，沒有用。
後來做如下嘗試：
在其它設定
->
儲存裝置
->
制定預設儲存裝置中選擇
u盤為預設儲存裝置。
# pm install
-s ***x.apk
就可以成功。
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