Android实施shell命令(转)

Android执行shell命令

1. /**?
2. *?执行一个shell命令，并返回字符串值?
3. *?
4. [email protected]?
5. *?命令名称&参数组成的数组（例如：{"/system/bin/cat",?"/proc/version"}）?
6. [email protected]?
7. *?命令执行路径（例如："system/bin/"）?
8. [email protected]?
9. [email protected]?
10. */?
11. public?static?synchronized?String?run(String[]?cmd,?String?workdirectory)?
12. ????????throws?IOException?{?
13. ????StringBuffer?result?=?new?StringBuffer();?
14. ????try?{?
15. ????????//?创建操作系统进程（也可以由Runtime.exec()启动）?
16. ????????//?Runtime?runtime?=?Runtime.getRuntime();?
17. ????????//?Process?proc?=?runtime.exec(cmd);?
18. ????????//?InputStream?inputstream?=?proc.getInputStream();?
19. ????????ProcessBuilder?builder?=?new?ProcessBuilder(cmd);?
20. ?
21. ????????InputStream?in?=?null;?
22. ????????//?设置一个路径（绝对路径了就不一定需要）?
23. ????????if?(workdirectory?!=?null)?{?
24. ????????????//?设置工作目录（同上）?
25. ????????????builder.directory(new?File(workdirectory));?
26. ????????????//?合并标准错误和标准输出?
27. ????????????builder.redirectErrorStream(true);?
28. ????????????//?启动一个新进程?
29. ????????????Process?process?=?builder.start();?
30. ?
31. ????????????//?读取进程标准输出流?
32. ????????????in?=?process.getInputStream();?
33. ????????????byte[]?re?=?new?byte[1024];?
34. ????????????while?(in.read(re)?!=?-1)?{?
35. ????????????????result?=?result.append(new?String(re));?
36. ????????????}?
37. ????????}?
38. ????????//?关闭输入流?
39. ????????if?(in?!=?null)?{?
40. ????????????in.close();?
41. ????????}?
42. ????}?catch?(Exception?ex)?{?
43. ????????ex.printStackTrace();?
44. ????}?
45. ????return?result.toString();?
46. }?

1. adb?shell?
2. $?top?-h?
3. top?-h?
4. Usage:?top?[-m?max_procs]?[-n?iterations]?[-d?delay]?[-s?sort_column]?[-t]?[-h]?
5. ??-m?num??Maximum?number?of?processes?to?display.?//?最多显示多少个进程?
6. ??-n?num??Updates?to?show?before?exiting.?//?刷新次数?
7. ??-d?num??Seconds?to?wait?between?updates.?//?刷新间隔时间（默认5秒）?
8. ??-s?col??Column?to?sort?by?<cpu,vss,rss,thr>?//?按哪列排序?
9. ??-t??????Show?threads?instead?of?processes.?//?显示线程信息而不是进程?
10. ??-h??????Display?this?help?screen.?//?显示帮助文档?
11. $?top?-n?1?
12. top?-n?1?

1. User?35%,?System?13%,?IOW?0%,?IRQ?0%?//?CPU占用率?
2. User?109?+?Nice?0?+?Sys?40?+?Idle?156?+?IOW?0?+?IRQ?0?+?SIRQ?1?=?306?//?CPU使用情况?
3. ?
4. PID?CPU%?S?#THR?VSS?RSS?PCY?UID?Name?//?进程属性?
5. xx??xx%?x???xx??xx??xx??xx??xx???xx?
6. ?
7. CPU占用率：?
8. User????用户进程?
9. System??系统进程?
10. IOW?IO等待时间?
11. IRQ?硬中断时间?
12. ?
13. CPU使用情况（指一个最小时间片内所占时间，单位jiffies。或者指所占进程数）：?
14. User????处于用户态的运行时间，不包含优先值为负进程?
15. Nice????优先值为负的进程所占用的CPU时间?
16. Sys?处于核心态的运行时间?
17. Idle????除IO等待时间以外的其它等待时间?
18. IOW?IO等待时间?
19. IRQ?硬中断时间?
20. SIRQ????软中断时间?
21. ?
22. 进程属性：?
23. PID?进程在系统中的ID?
24. CPU%????当前瞬时所以使用CPU占用率?
25. S???进程的状态，其中S表示休眠，R表示正在运行，Z表示僵死状态，N表示该进程优先值是负数。?
26. #THR????程序当前所用的线程数?
27. VSS?Virtual?Set?Size?虚拟耗用内存（包含共享库占用的内存）?
28. RSS?Resident?Set?Size?实际使用物理内存（包含共享库占用的内存）?
29. PCY?OOXX，不知道什么东东?
30. UID?运行当前进程的用户id?
31. Name????程序名称android.process.media?
32. ?
33. //?ps：内存占用大小有如下规律：VSS?>=?RSS?>=?PSS?>=?USS?
34. //?PSS??Proportional?Set?Size?实际使用的物理内存（比例分配共享库占用的内存）?
35. //?USS??Unique?Set?Size?进程独自占用的物理内存（不包含共享库占用的内存）?

? ? ? ???在附件Android系统->android top.txt文件内，自个总结的。

1. //?top命令?
2. public?static?final?String[]?TOP?=?{?"/system/bin/top",?"-n",?"1"?};?
3. ?
4. //?现在执行top?-n?1，我们只需要第二行（用第二行求得CPU占用率，精确数据）?
5. //?第一行：User?35%,?System?13%,?IOW?0%,?IRQ?0%?//?CPU占用率?
6. //?第二行：User?109?+?Nice?0?+?Sys?40?+?Idle?156?+?IOW?0?+?IRQ?0?+?SIRQ?1?=?306?
7. //?//?CPU使用情况?
8. public?static?synchronized?String?run(String[]?cmd)?{?
9. ????String?line?=?"";?
10. ????InputStream?is?=?null;?
11. ????try?{?
12. ????????Runtime?runtime?=?Runtime.getRuntime();?
13. ????????Process?proc?=?runtime.exec(cmd);?
14. ????????is?=?proc.getInputStream();?
15. ?
16. ????????//?换成BufferedReader?
17. ????????BufferedReader?buf?=?new?BufferedReader(new?InputStreamReader(is));?
18. ????????do?{?
19. ????????????line?=?buf.readLine();?
20. ????????????//?前面有几个空行?
21. ????????????if?(line.startsWith("User"))?{?
22. ????????????????//?读到第一行时，我们再读取下一行?
23. ????????????????line?=?buf.readLine();?
24. ????????????????break;?
25. ????????????}?
26. ????????}?while?(true);?
27. ?
28. ????????if?(is?!=?null)?{?
29. ????????????buf.close();?
30. ????????????is.close();?
31. ????????}?
32. ????}?catch?(IOException?e)?{?
33. ????????e.printStackTrace();?
34. ????}?
35. ????return?line;?
36. }?
37. ?
38. //?获取指定应用的top命令获取的信息?
39. //?PID?CPU%?S?#THR?VSS?RSS?PCY?UID?Name?//?进程属性?
40. //?如果当前应用不在运行则返回null?
41. public?static?synchronized?String?run(String[]?cmd,?String?pkgName)?{?
42. ????String?line?=?null;?
43. ????InputStream?is?=?null;?
44. ????try?{?
45. ????????Runtime?runtime?=?Runtime.getRuntime();?
46. ????????Process?proc?=?runtime.exec(cmd);?
47. ????????is?=?proc.getInputStream();?
48. ?
49. ????????//?换成BufferedReader?
50. ????????BufferedReader?buf?=?new?BufferedReader(new?InputStreamReader(is));?
51. ????????do?{?
52. ????????????line?=?buf.readLine();?
53. ????????????//?读取到相应pkgName跳出循环（或者未找到）?
54. ????????????if?(null?==?line?||?line.endsWith(pkgName))?{?
55. ????????????????break;?
56. ????????????}?
57. ????????}?while?(true);?
58. ?
59. ????????if?(is?!=?null)?{?
60. ????????????buf.close();?
61. ????????????is.close();?
62. ????????}?
63. ????}?catch?(IOException?e)?{?
64. ????????e.printStackTrace();?
65. ????}?
66. ????return?line;?
67. }?

?

?

?