JOIN(1) JOIN(1) join - join lines of two files on a common field join []... 1 2 , . , . 1 2 - ( ), . -a , 1 2, 1 2 -e STRING replace missing (empty) input fields with STRING; I.e., missing fields specified with '-12jo' options -i, --ignore-case -j ,,-1 -2 " -o -t -v like -a FILENUM, but suppress joined output lines -1 1 -2 2 --check-order , --nocheck-order --header , -z, --zero-terminated , --help --version ,,-t ", , . 1. , ,,FILENUM.FIELD" ,,0". , 1, 2, . ,,auto", . : 1 2 . ., ,,sort -k 1b,1" ,,join" , ,,join -t "" ,,sort" . , ,,LC_COLLATE". , . . coreutils: Copyright (C) 2023 Free Software Foundation, Inc. 3+: 3 . : . , . comm(1), uniq(1) ,,info '(coreutils) join invocation'" ; 3 . . , - TODO <>. coreutils 9.4 2024 JOIN(1)