Window manager (window) commands:
help
Print this help text.
size [reset|WxH|WdpxHdp]
Return or override display size.
width and height in pixels unless suffixed with 'dp'.
density [reset|DENSITY]
Return or override display density.
overscan [reset|LEFT,TOP,RIGHT,BOTTOM]
Set overscan area for display.
scaling [off|auto]
Set display scaling mode.
dismiss-keyguard
shell@JDtab:/ $ pm
usage: pm list packages [-f] [-d] [-e] [-s] [-3] [-i] [-u] [--user USER_ID] [FILTER]
pm list permission-groups
pm list permissions [-g] [-f] [-d] [-u] [GROUP]
pm list instrumentation [-f] [TARGET-PACKAGE]
pm list features
pm list libraries
pm list users
pm path PACKAGE
pm dump PACKAGE
pm install [-lrtsfd] [-i PACKAGE] [--user USER_ID] [PATH]
pm install-create [-lrtsfdp] [-i PACKAGE] [-S BYTES]
[--install-location 0/1/2]
[--force-uuid internal|UUID]
pm install-write [-S BYTES] SESSION_ID SPLIT_NAME [PATH]
pm install-commit SESSION_ID
pm install-abandon SESSION_ID
pm uninstall [-k] [--user USER_ID] PACKAGE
pm set-installer PACKAGE INSTALLER
pm move-package PACKAGE [internal|UUID]
pm move-primary-storage [internal|UUID]
pm clear [--user USER_ID] PACKAGE
pm enable [--user USER_ID] PACKAGE_OR_COMPONENT
pm disable [--user USER_ID] PACKAGE_OR_COMPONENT
pm disable-user [--user USER_ID] PACKAGE_OR_COMPONENT
pm disable-until-used [--user USER_ID] PACKAGE_OR_COMPONENT
pm hide [--user USER_ID] PACKAGE_OR_COMPONENT
pm unhide [--user USER_ID] PACKAGE_OR_COMPONENT
pm grant [--user USER_ID] PACKAGE PERMISSION
pm revoke [--user USER_ID] PACKAGE PERMISSION
pm reset-permissions
pm set-app-link [--user USER_ID] PACKAGE {always|ask|never|undefined}
pm get-app-link [--user USER_ID] PACKAGE
pm set-install-location [0/auto] [1/internal] [2/external]
pm get-install-location
pm set-permission-enforced PERMISSION [true|false]
pm trim-caches DESIRED_FREE_SPACE [internal|UUID]
pm create-user [--profileOf USER_ID] [--managed] USER_NAME
pm remove-user USER_ID
pm get-max-users
pm list packages: prints all packages, optionally only
those whose package name contains the text in FILTER. Options:
-f: see their associated file.
-d: filter to only show disbled packages.
-e: filter to only show enabled packages.
-s: filter to only show system packages.
-3: filter to only show third party packages.
-i: see the installer for the packages.
-u: also include uninstalled packages.
pm list permission-groups: prints all known permission groups.
pm list permissions: 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.
pm list instrumentation: use to list all test packages; optionally
supply to list the test packages for a particular
application. Options:
-f: list the .apk file for the test package.
pm list features: prints all features of the system.
pm list users: prints all users on the system.
pm path: print the path to the .apk of the given PACKAGE.
pm dump: print system state associated with the given PACKAGE.
pm install: install a single legacy package
pm install-create: create an install session
-l: forward lock application
-r: replace existing application
-t: allow test packages
-i: specify the installer package name
-s: install application on sdcard
-f: install application on internal flash
-d: allow version code downgrade
-p: partial application install
-g: grant all runtime permissions
-S: size in bytes of entire session
pm install-write: write a package into existing session; path may
be '-' to read from stdin
-S: size in bytes of package, required for stdin
pm install-commit: perform install of fully staged session
pm install-abandon: abandon session
pm set-installer: set installer package name
pm uninstall: removes a package from the system. Options:
-k: keep the data and cache directories around after package removal.
pm clear: deletes all data associated with a package.
pm enable, disable, disable-user, disable-until-used: these commands
change the enabled state of a given package or component (written
as "package/class").
pm grant, revoke: these commands either grant or revoke permissions
to apps. The permissions must be declared as used in the app's
manifest, be runtime permissions (protection level dangerous),
and the app targeting SDK greater than Lollipop MR1.
pm reset-permissions: revert all runtime permissions to their default state.
pm get-install-location: returns 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
pm set-install-location: changes the default install location.
NOTE: this is only intended for debugging; using this can cause
applications to break and other undersireable behavior.
0 [auto]: Let system decide the best location
1 [internal]: Install on internal device storage
2 [external]: Install on external media
pm trim-caches: trim cache files to reach the given free space.
pm create-user: create a new user with the given USER_NAME,
printing the new user identifier of the user.
pm remove-user: remove the user with the given USER_IDENTIFIER,
deleting all data associated with that user
1|shell@JDtab:/ $
4.4.1 list
list packages [options] filter 输出所有软件包，或者，仅输出包名称包含 filter 中的文本的软件包。
选项：
-f：查看它们的关联文件。
-d：进行过滤以仅显示已停用的软件包。
-e：进行过滤以仅显示已启用的软件包。
-s：进行过滤以仅显示系统软件包。
-3：进行过滤以仅显示第三方软件包。
-i：查看软件包的安装程序。
-u：也包括卸载的软件包。
--user user_id：要查询的用户空间。
例:
adb shell pm list packages
adb shell pm list packages -s 系统app
adb shell pm list packages -3 第三方app
adb shell ps --help
usage: ps [-AadefLlnwZ] [-gG GROUP,] [-k FIELD,] [-o FIELD,] [-p PID,] [-t TTY,] [-uU USER,]
List processes.
Which processes to show (selections may be comma separated lists):
-A All processes
-a Processes with terminals that aren't session leaders
-d All processes that aren't session leaders
-e Same as -A
-g Belonging to GROUPs
-G Belonging to real GROUPs (before sgid)
-p PIDs (--pid)
-P Parent PIDs (--ppid)
-s In session IDs
-t Attached to selected TTYs
-T Show threads
-u Owned by USERs
-U Owned by real USERs (before suid)
.....
命令格式
adb shell dumpsys [-t timeout] [--help | -l | --skip services | service [arguments] | -c | -h]
选项说明
-t timeout 指定时间 默认10秒
--help 查看帮助
-l 列出可用参数列表
--skip services Specifies the services that you do not want to include in the output.
service [arguments] Specifies the service that you want to output. Some services may allow you to pass optional arguments. You can learn about these optional arguments by passing the -h option with the service, as shown below:
adb shell dumpsys procstats -h
-c When specifying certain services, append this option to output data in a machine-friendly format.
-h For certain services, append this option to see help text and additional options for that service.
常用
dumpsys activity AMS服务相关信息
dumpsys window WMS服务相关信息
dumpsys cpuinfo CPU信息
dumpsys meminfo 内存信息
dumpsys activity
查看帮助
adb shell dumpsys activity -h
Activity manager dump options:
[-a] [-c] [-p PACKAGE] [-h] [WHAT] ...
WHAT may be one of:
a[ctivities]: activity stack state //查看activity
r[recents]: recent activities state
b[roadcasts] [PACKAGE_NAME] [history [-s]]: broadcast state
broadcast-stats [PACKAGE_NAME]: aggregated broadcast statistics
i[ntents] [PACKAGE_NAME]: pending intent state
p[rocesses] [PACKAGE_NAME]: process state
o[om]: out of memory management
perm[issions]: URI permission grant state
prov[iders] [COMP_SPEC ...]: content provider state
provider [COMP_SPEC]: provider client-side state
s[ervices] [COMP_SPEC ...]: service state //服务
as[sociations]: tracked app associations
settings: currently applied config settings
service [COMP_SPEC]: service client-side state
package [PACKAGE_NAME]: all state related to given package
all: dump all activities
top: dump the top activity
WHAT may also be a COMP_SPEC to dump activities.
COMP_SPEC may be a component name (com.foo/.myApp),
a partial substring in a component name, a
hex object identifier.
-a: include all available server state.
-c: include client state.
-p: limit output to given package.
--checkin: output checkin format, resetting data.
--C: output checkin format, not resetting data.
--proto: output dump in protocol buffer format.
--autofill: dump just the autofill-related state of an activity
例:
查看acitivty信息
adb shell dumpsys activity activities 或者 adb shell dumpsys activity a
查看微信所有服务
adb shell dumpsys activity s com.tencent.mm
原文地址：http://www.cnblogs.com/Kavlez/p/4268601.html Enumeration
于Java 1.5增加的enum type...enum type是由一组固定的常量组成的类型，比如四个季节、扑克花色。在出现enum type之前，通常用一组int常量表示枚举类型。比如这样：
public static final int APPLE_FUJI = 0
第二章 Getting Started
1.Hive最大的局限性是什么？一是不支持行级别的增删改(insert, delete, update)二是查询性能非常差(基于Hadoop MapReduce）,不适合延迟小的交互式任务三是不支持事务2. Hive MetaStore是干什么的？Hive persists table schemas and other system metadata.
/*
* 0.use a TwoWayLinkedList to store the path.when the node can't be path,you should/can delete it.
* 1.curSum==exceptedSum:if the lastNode is TreeNode,printPath();delete the node otherwise
//js获取项目根路径，如： http://localhost:8083/uimcardprj
function getRootPath(){
//获取当前网址，如： http://localhost:8083/uimcardprj/share/meun.jsp
var curWwwPath=window.document.locati
在Linux下面部 署应用的时候，有时候会遇上Socket/File: Can’t open so many files的问题；这个值也会影响服务器的最大并发数，其实Linux是有文件句柄限制的，而且Linux默认不是很高，一般都是1024，生产服务器用 其实很容易就达到这个数量。下面说的是，如何通过正解配置来改正这个系统默认值。因为这个问题是我配置Nginx+php5时遇到了，所以我将这篇归纳进
