sort [Options] [file]
Options:
-B: Ignores whitespace characters that begin before each line;
-C: Check whether the file has been sorted in order;
-D: When sorting, ignore other characters while processing English letters, numbers and space characters;
-F: When sorting, lowercase letters are treated as uppercase letters;
-I: When sorting, omit other characters except ASCII characters between 040 and 176;
-M: Merge the files of several sort numbers;
-M: Sorts the first 3 letters according to the abbreviation of the month;
-N: According to the size of the numerical order;
-o< output file;: Deposit the sorted result into the prepared document;
-r: Sort in reverse order;
-t< delimited character;: Specifies the field separator character to use when sorting;
+< start >-< end fields: Sort by the specified fields, ranging from the Start field to the previous column in the End field. First column starting from 0
Linux Sort Command Sort