Its general format is:
Join [options] INPUT-file1 input-file2
AN N is a number that displays mismatches from the file n when it is connected. For example, - A 1 displays the mismatics of the first file, - A 2 is displayed from the second file. o N.m n is the file number, m is the domain number. 1. 3 Indicates that only the document 1 of the file 1 is displayed, each N, m must be separated with a comma, such as 1. 3, 2. 1. J n m n is the file number, m is the domain number. Use other domains to connect domains. T domain separator. A domain separator used to set a non-spaced or T A B key. For example, specify a colon to do a domain separator - T :.