Android 开发中使用Linux Shell实例详解
程序员文章站
2024-01-27 18:33:16
android 开发中使用linux shell实例详解
引言
android系统是基于linux内核运行的,而做为一名linux粉,不在android上面运行一下li...
android 开发中使用linux shell实例详解
引言
android系统是基于linux内核运行的,而做为一名linux粉,不在android上面运行一下linux shell怎么行呢?
最近发现了一个很好的android shell工具代码,在这里分享一下。
shell核心代码
import java.io.bufferedreader; import java.io.dataoutputstream; import java.io.ioexception; import java.io.inputstreamreader; import java.util.list; /** * shellutils * <ul> * <strong>check root</strong> * <li>{@link shellutils#checkrootpermission()}</li> * </ul> * <ul> * <strong>execte command</strong> * <li>{@link shellutils#execcommand(string, boolean)}</li> * <li>{@link shellutils#execcommand(string, boolean, boolean)}</li> * <li>{@link shellutils#execcommand(list, boolean)}</li> * <li>{@link shellutils#execcommand(list, boolean, boolean)}</li> * <li>{@link shellutils#execcommand(string[], boolean)}</li> * <li>{@link shellutils#execcommand(string[], boolean, boolean)}</li> * </ul> */ public class shellutils { public static final string command_su = "su"; public static final string command_sh = "sh"; public static final string command_exit = "exit\n"; public static final string command_line_end = "\n"; private shellutils() { throw new assertionerror(); } /** * check whether has root permission * * @return */ public static boolean checkrootpermission() { return execcommand("echo root", true, false).result == 0; } /** * execute shell command, default return result msg * * @param command command * @param isroot whether need to run with root * @return * @see shellutils#execcommand(string[], boolean, boolean) */ public static commandresult execcommand(string command, boolean isroot) { return execcommand(new string[] {command}, isroot, true); } /** * execute shell commands, default return result msg * * @param commands command list * @param isroot whether need to run with root * @return * @see shellutils#execcommand(string[], boolean, boolean) */ public static commandresult execcommand(list<string> commands, boolean isroot) { return execcommand(commands == null ? null : commands.toarray(new string[] {}), isroot, true); } /** * execute shell commands, default return result msg * * @param commands command array * @param isroot whether need to run with root * @return * @see shellutils#execcommand(string[], boolean, boolean) */ public static commandresult execcommand(string[] commands, boolean isroot) { return execcommand(commands, isroot, true); } /** * execute shell command * * @param command command * @param isroot whether need to run with root * @param isneedresultmsg whether need result msg * @return * @see shellutils#execcommand(string[], boolean, boolean) */ public static commandresult execcommand(string command, boolean isroot, boolean isneedresultmsg) { return execcommand(new string[] {command}, isroot, isneedresultmsg); } /** * execute shell commands * * @param commands command list * @param isroot whether need to run with root * @param isneedresultmsg whether need result msg * @return * @see shellutils#execcommand(string[], boolean, boolean) */ public static commandresult execcommand(list<string> commands, boolean isroot, boolean isneedresultmsg) { return execcommand(commands == null ? null : commands.toarray(new string[] {}), isroot, isneedresultmsg); } /** * execute shell commands * * @param commands command array * @param isroot whether need to run with root * @param isneedresultmsg whether need result msg * @return <ul> * <li>if isneedresultmsg is false, {@link commandresult#successmsg} is null and * {@link commandresult#errormsg} is null.</li> * <li>if {@link commandresult#result} is -1, there maybe some excepiton.</li> * </ul> */ public static commandresult execcommand(string[] commands, boolean isroot, boolean isneedresultmsg) { int result = -1; if (commands == null || commands.length == 0) { return new commandresult(result, null, null); } process process = null; bufferedreader successresult = null; bufferedreader errorresult = null; stringbuilder successmsg = null; stringbuilder errormsg = null; dataoutputstream os = null; try { process = runtime.getruntime().exec(isroot ? command_su : command_sh); os = new dataoutputstream(process.getoutputstream()); for (string command : commands) { if (command == null) { continue; } // donnot use os.writebytes(commmand), avoid chinese charset error os.write(command.getbytes()); os.writebytes(command_line_end); os.flush(); } os.writebytes(command_exit); os.flush(); result = process.waitfor(); // get command result if (isneedresultmsg) { successmsg = new stringbuilder(); errormsg = new stringbuilder(); successresult = new bufferedreader(new inputstreamreader(process.getinputstream())); errorresult = new bufferedreader(new inputstreamreader(process.geterrorstream())); string s; while ((s = successresult.readline()) != null) { successmsg.append(s); } while ((s = errorresult.readline()) != null) { errormsg.append(s); } } } catch (ioexception e) { e.printstacktrace(); } catch (exception e) { e.printstacktrace(); } finally { try { if (os != null) { os.close(); } if (successresult != null) { successresult.close(); } if (errorresult != null) { errorresult.close(); } } catch (ioexception e) { e.printstacktrace(); } if (process != null) { process.destroy(); } } return new commandresult(result, successmsg == null ? null : successmsg.tostring(), errormsg == null ? null : errormsg.tostring()); } /** * result of command * <ul> * <li>{@link commandresult#result} means result of command, 0 means normal, else means error, same to excute in * linux shell</li> * <li>{@link commandresult#successmsg} means success message of command result</li> * <li>{@link commandresult#errormsg} means error message of command result</li> * </ul> */ public static class commandresult { /** result of command **/ public int result; /** success message of command result **/ public string successmsg; /** error message of command result **/ public string errormsg; public commandresult(int result) { this.result = result; } public commandresult(int result, string successmsg, string errormsg) { this.result = result; this.successmsg = successmsg; this.errormsg = errormsg; } } }
shellutils代码引用自:trinea
小实例
是否root
public boolean isrooted(){ commandresult cmdresult = shellutils.execcommand("su", true); if (cmdresult.errormsg.equals("permission denied") || cmdresult.result != 0) { return false; }else{ return true; } }
复制文件
string[] commands = new string[] { "mount -o rw,remount /system", "cp /mnt/sdcard/xx.apk /system/app/" }; public boolean copyfile(string[] cmdtext){ commandresult cmdresult = shellutils.execcommand(cmdtext, true); if (cmdresult.errormsg.equals("permission denied") || cmdresult.result != 0) { return false; }else{ return true; } }
我暂时就举这两个例子,只要你会shell,什么操作都是可以的。
感谢阅读,希望能帮助到大家,谢谢大家对本站的支持!