Linux-sort sort

        -T  # Specify the field separator        character to use when sorting -n  # Sort        by numeric size -R  # sort        in reverse order -F  # when sorting, treat lowercase letters as uppercase letters         -D  # When sorting, handle letters, numbers, and whitespace characters, ignoring other characters         -c  # Check to see if the files are sorted        in order -B  # Ignores the space character        at the beginning of each line -M # The first  3 letters are sorted        according to the abbreviation of the month -k  # Specify domain         -M  # Merge        a few sorted files + < Start field >-< end field >   
　　　　　　  # is sorted by the field specified, ranging from the Start field to the previous column in the End field.         -o  # The sorted results are stored in the specified text

Sort-N # Sort by number-NR # by Digital Flashback sort-U # filter Repeating rows sort-m A.txt c.txt # combine two file contents into a sort-n-t' '-K2-K3A.txt # The second field is the same and will be handled from the third domain sort-n-t':'-K 3r A.txt # to: Flashback to the third field of the Split field sort-K1.3a.txt # Sorting from the third letter sort-T" "-K 2n-u A.txt # is sorted in the second field, and if duplicate is encountered, delete

Linux-sort sort