./shell.sh: line 6: [: =~: binary operator expected

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                          I'm trying to execute the following shell script, where I'm trying to keep executing a command in an infinite loop and until the output is not equal to a certain substring


    checkDeviceStatus=$(adb shell getprop sys.boot_completed 2>&1)
    
    function Check_Status () {
    
    while [ ! "$checkDeviceStatus" =~ "device offline" ] || [ ! "$checkDeviceStatus" =~ "device still authorizing" ]
      do
      if [ ! "$checkDeviceStatus" =~ "device offline" ] || [ ! "$checkDeviceStatus" =~ "device still authorizing" ];
           then
              echo "Device is now up and running!!: '$checkDeviceStatus'"
              break
           else 
                echo "'$checkDeviceStatus'"
           fi;
    done
    
    };
    
    Check_Status

but I'm getting the following error 

    ./shell.sh: line 6: [: =~: binary operator expected
    ./shell.sh: line 8: [: =~: binary operator expected
                        

Asked by Amr Kamel (121 rep)

Jul 19, 2021, 02:42 PM
Last activity: Jul 19, 2021, 03:28 PM

./shell.sh: line 6: [: =~: binary operator expected

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