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  1. or download this
    perl -lpe 'substr $_, 0, 1 = "";'
    Can't modify constant item in scalar assignment at -e line 1, near """
    +;"
    ...
    perl -lpe 'substr $_, 0, 1, "";'
    this is
    his is
    
  2. or download this
    perl -lpe 'substr($_, 0, 1) = "" '
    test
    est