Print the lines that only with all consecutive repeated characters

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I have a text file and I want to print only the lines that have all their characters are consecutively reapeated at least two times or more.
FOR EXAMPLE THE INPUT:



11
AAA
555227777
BBhh@@222
baabbb
1112
212211
baa
22333445
322113


 The output should be:



11
AAA 
555227777
BBhh@@222


 The output contains only these four lines because  they have only consecutively duplicate characters in order.



I have tried this code 



grep '(^| )([   ])21($| )' INFILE


But its not working exactly.






text-processing grep







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  • a revert answer to your previous question is required only here. All your questions are in same category, so you exercise something?
    – sddgob
    17 mins ago















up vote
0
down vote

favorite












I have a text file and I want to print only the lines that have all their characters are consecutively reapeated at least two times or more.
FOR EXAMPLE THE INPUT:



11
AAA
555227777
BBhh@@222
baabbb
1112
212211
baa
22333445
322113


 The output should be:



11
AAA 
555227777
BBhh@@222


 The output contains only these four lines because  they have only consecutively duplicate characters in order.



I have tried this code 



grep '(^| )([   ])21($| )' INFILE


But its not working exactly.






text-processing grep







share|improve this question























  • a revert answer to your previous question is required only here. All your questions are in same category, so you exercise something?
    – sddgob
    17 mins ago













up vote
0
down vote

favorite









up vote
0
down vote

favorite











I have a text file and I want to print only the lines that have all their characters are consecutively reapeated at least two times or more.
FOR EXAMPLE THE INPUT:



11
AAA
555227777
BBhh@@222
baabbb
1112
212211
baa
22333445
322113


 The output should be:



11
AAA 
555227777
BBhh@@222


 The output contains only these four lines because  they have only consecutively duplicate characters in order.



I have tried this code 



grep '(^| )([   ])21($| )' INFILE


But its not working exactly.






text-processing grep







share|improve this question















I have a text file and I want to print only the lines that have all their characters are consecutively reapeated at least two times or more.
FOR EXAMPLE THE INPUT:



11
AAA
555227777
BBhh@@222
baabbb
1112
212211
baa
22333445
322113


 The output should be:



11
AAA 
555227777
BBhh@@222


 The output contains only these four lines because  they have only consecutively duplicate characters in order.



I have tried this code 



grep '(^| )([   ])21($| )' INFILE


But its not working exactly.






text-processing grep




text-processing grep






share|improve this question















share|improve this question













share|improve this question




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edited 23 mins ago









Jeff Schaller

34.2k851113




34.2k851113










asked 28 mins ago









Ahmed

404




404











  • a revert answer to your previous question is required only here. All your questions are in same category, so you exercise something?
    – sddgob
    17 mins ago

















  • a revert answer to your previous question is required only here. All your questions are in same category, so you exercise something?
    – sddgob
    17 mins ago
















a revert answer to your previous question is required only here. All your questions are in same category, so you exercise something?
– sddgob
17 mins ago





a revert answer to your previous question is required only here. All your questions are in same category, so you exercise something?
– sddgob
17 mins ago











1 Answer
1






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You could invert this answer:



sed -n -e '/^(.)11*$/p' < input > output


... or the grep variation:



grep '^(.)11*$' < input > output





share|improve this answer




















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    1 Answer
    1






    active

    oldest

    votes








    1 Answer
    1






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes








    up vote
    0
    down vote













    You could invert this answer:



    sed -n -e '/^(.)11*$/p' < input > output


    ... or the grep variation:



    grep '^(.)11*$' < input > output





    share|improve this answer
























      up vote
      0
      down vote













      You could invert this answer:



      sed -n -e '/^(.)11*$/p' < input > output


      ... or the grep variation:



      grep '^(.)11*$' < input > output





      share|improve this answer






















        up vote
        0
        down vote










        up vote
        0
        down vote









        You could invert this answer:



        sed -n -e '/^(.)11*$/p' < input > output


        ... or the grep variation:



        grep '^(.)11*$' < input > output





        share|improve this answer












        You could invert this answer:



        sed -n -e '/^(.)11*$/p' < input > output


        ... or the grep variation:



        grep '^(.)11*$' < input > output






        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered 19 mins ago









        Jeff Schaller

        34.2k851113




        34.2k851113



























             

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