Android Code Execution Linux Shell little memory

Introduction

Android is based on the Linux kernel, and as a Linux powder, do not run on Android Linux shell on the line?
Recently found a good Android shell tool code, here to share a bit.

Shell Core Code

ImportJava.io.BufferedReader;ImportJava.io.DataOutputStream;ImportJava.io.IOException;ImportJava.io.InputStreamReader;ImportJava.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 FinalString Command_su ="Su"; Public Static FinalString Command_sh ="sh"; Public Static FinalString Command_exit ="exit\n"; Public Static FinalString Command_line_end ="\ n";Private shellutils() {Throw NewAssertionerror (); }/** * Check whether has root permission * * @return  */     Public Static Boolean checkrootpermission() {returnExecCommand ("Echo Root",true,false). result = =0; }/** * Execute shell command, default return result msg * * @param Command command * @par AM isRoot whether need to run with root * @return * @see shellutils#execcommand (string[], b Oolean, Boolean) * /     Public StaticCommandresultexeccommand(String command,BooleanIsRoot) {returnExecCommand (Newstring[] {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 (stri Ng[], Boolean, Boolean) *
      /     Public StaticCommandresultexeccommand(list<string> commands,BooleanIsRoot) {returnExecCommand (Commands = =NULL?NULL: Commands.toarray (NewString[] {}), IsRoot,true); }/** * Execute shell commands, default return result msg * * @param commands command Array *< c6> @param IsRoot whether need to run with root * @return * @see Shellutils#execcommand (Str Ing[], Boolean, Boolean) * /     Public StaticCommandresultexeccommand(string[] commands,BooleanIsRoot) {returnExecCommand (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 StaticCommandresultexeccommand(String command,BooleanIsRoot,BooleanISNEEDRESULTMSG) {returnExecCommand (Newstring[] {command}, IsRoot, isneedresultmsg); }/** * Execute shell commands * * @param commands Command list * @param isRoot wheth Er need to run with root * @param isneedresultmsg Whether need result msg * @return * @s EE shellutils#execcommand (string[], Boolean, Boolean) */     Public StaticCommandresultexeccommand(list<string> commands,BooleanIsRoot,BooleanISNEEDRESULTMSG) {returnExecCommand (Commands = =NULL?NULL: Commands.toarray (NewString[] {}), isRoot, isneedresultmsg); }/** * Execute shell commands * * @param commands Command Array * @param isRoot Whet     She 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 Com MANDRESULT#ERRORMSG} is null.</li> * <li>if {@link Commandresult#result} is-1, there maybe some e xcepiton.</li> * </ul> * *     Public StaticCommandresultexeccommand(string[] commands,BooleanIsRoot,BooleanISNEEDRESULTMSG) {intresult =-1;if(Commands = =NULL|| Commands.length = =0) {return NewCommandresult (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 =NewDataOutputStream (Process.getoutputstream ()); for(String command:commands) {if(Command = =NULL) {Continue; }//Donnot use Os.writebytes (commmand), avoid Chinese charset errorOs.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 =NewStringBuilder (); ErrorMsg =NewStringBuilder (); Successresult =NewBufferedReader (NewInputStreamReader (Process.getinputstream ())); Errorresult =NewBufferedReader (NewInputStreamReader (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 NewCommandresult (result, successmsg = =NULL?NULL: Successmsg.tostring (), errormsg = =NULL?NULL: Errormsg.tostring ()); }/** * Result of command * <ul> * <li>{@link Commandresult#result} means result of command, 0 m EANs Normal, else means error, same to Excute in * Linux shell</li> * <li>{@link commandresult#success  MSG} 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 intResult/** Success Message of command result **/         PublicString successmsg;/** error message of command result **/         PublicString errormsg; Public Commandresult(intResult) { This. result = result; } Public Commandresult(intresult, string successmsg, String errormsg) { This. result = result; This. successmsg = successmsg; This. errormsg = errormsg; }    }}

Shellutils code reference from: Trinea

Small instances

is root

publicisRooted(){    CommandResult cmdResult = ShellUtils.execCommand("su"true);    if (cmdResult.errorMsg.equals("Permission denied"0) {        returnfalse;    }else{        returntrue;    }}

Copying files

new"mount -o rw,remount /system""cp /mnt/sdcard/xx.apk /system/app/" };publicbooleancopyFile(String[] cmdText){    true);    if (cmdResult.errorMsg.equals("Permission denied"0) {        returnfalse;    }else{        returntrue;    }}

I'll give you these two examples for the time being, so long as you can shell, what you do is all right.

Blog name: Wang Leping Blog

Blog Address: http://blog.lepingde.com

CSDN Blog Address: http://blog.csdn.net/lecepin

Android Code Execution Linux Shell little memory