different result of sorting when using ASCII locale (LC_ALL=C)

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I was reading one of the answers on how LC_ALL=C can be used to speed up grep searched. I understand all that when I test it using strace but one thing that I don't understand is why sort command give different output if locale is set to C,



cat a
C 
B
A
c
a
b


using sorting with unicode,



$ cat a | sort
a
A
b
B
c
C


sort with LC_ALL=C,



$ LC_ALL=C sort a
A
B
C 
a
b
c


Both A in unicode and ascii is 65 and a in both is 97, then why there is difference in sorting?



Can someone please explain why?






sort






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    up vote
    0
    down vote

    favorite












    I was reading one of the answers on how LC_ALL=C can be used to speed up grep searched. I understand all that when I test it using strace but one thing that I don't understand is why sort command give different output if locale is set to C,



    cat a
    C 
    B
    A
    c
    a
    b


    using sorting with unicode,



    $ cat a | sort
    a
    A
    b
    B
    c
    C


    sort with LC_ALL=C,



    $ LC_ALL=C sort a
    A
    B
    C 
    a
    b
    c


    Both A in unicode and ascii is 65 and a in both is 97, then why there is difference in sorting?



    Can someone please explain why?






    sort






    share























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I was reading one of the answers on how LC_ALL=C can be used to speed up grep searched. I understand all that when I test it using strace but one thing that I don't understand is why sort command give different output if locale is set to C,



      cat a
      C 
      B
      A
      c
      a
      b


      using sorting with unicode,



      $ cat a | sort
      a
      A
      b
      B
      c
      C


      sort with LC_ALL=C,



      $ LC_ALL=C sort a
      A
      B
      C 
      a
      b
      c


      Both A in unicode and ascii is 65 and a in both is 97, then why there is difference in sorting?



      Can someone please explain why?






      sort






      share













      I was reading one of the answers on how LC_ALL=C can be used to speed up grep searched. I understand all that when I test it using strace but one thing that I don't understand is why sort command give different output if locale is set to C,



      cat a
      C 
      B
      A
      c
      a
      b


      using sorting with unicode,



      $ cat a | sort
      a
      A
      b
      B
      c
      C


      sort with LC_ALL=C,



      $ LC_ALL=C sort a
      A
      B
      C 
      a
      b
      c


      Both A in unicode and ascii is 65 and a in both is 97, then why there is difference in sorting?



      Can someone please explain why?






      sort




      sort





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      asked 6 mins ago









      MaverickD

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