How to edit this command?

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I'm filtering a text file with numbers and names
I have these commands



sed -En 'h;:a;s/^(.)1+//;ta;/^$/x;p' file
perl -lne 'print if /^((.)2+(?!2))+$/' file


For printing only the lines with all consecutively duplicates two or more times. My question is:
How to exclude the first or the second character in a line from being consecutive duplicates?
If I have the input like:



1122
133555
1366622
256651155


The output should be:



133555 (only the first character is not consecutively repeated)
1366622 (only the first and the second characters are not consecutively repeated).










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    up vote
    -1
    down vote

    favorite












    I'm filtering a text file with numbers and names
    I have these commands



    sed -En 'h;:a;s/^(.)1+//;ta;/^$/x;p' file
    perl -lne 'print if /^((.)2+(?!2))+$/' file


    For printing only the lines with all consecutively duplicates two or more times. My question is:
    How to exclude the first or the second character in a line from being consecutive duplicates?
    If I have the input like:



    1122
    133555
    1366622
    256651155


    The output should be:



    133555 (only the first character is not consecutively repeated)
    1366622 (only the first and the second characters are not consecutively repeated).










    share|improve this question

























      up vote
      -1
      down vote

      favorite









      up vote
      -1
      down vote

      favorite











      I'm filtering a text file with numbers and names
      I have these commands



      sed -En 'h;:a;s/^(.)1+//;ta;/^$/x;p' file
      perl -lne 'print if /^((.)2+(?!2))+$/' file


      For printing only the lines with all consecutively duplicates two or more times. My question is:
      How to exclude the first or the second character in a line from being consecutive duplicates?
      If I have the input like:



      1122
      133555
      1366622
      256651155


      The output should be:



      133555 (only the first character is not consecutively repeated)
      1366622 (only the first and the second characters are not consecutively repeated).










      share|improve this question















      I'm filtering a text file with numbers and names
      I have these commands



      sed -En 'h;:a;s/^(.)1+//;ta;/^$/x;p' file
      perl -lne 'print if /^((.)2+(?!2))+$/' file


      For printing only the lines with all consecutively duplicates two or more times. My question is:
      How to exclude the first or the second character in a line from being consecutive duplicates?
      If I have the input like:



      1122
      133555
      1366622
      256651155


      The output should be:



      133555 (only the first character is not consecutively repeated)
      1366622 (only the first and the second characters are not consecutively repeated).







      command-line






      share|improve this question















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      share|improve this question








      edited 2 mins ago

























      asked 14 mins ago









      Ahmed

      665




      665

























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