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Der Linux-Befehl comm wird verwendet, um zwei bereits sortierte Dateien zu vergleichen.
这项指令会一列列地比较两个已排序文件的差异,并将其结果显示出来,如果没有指定任何参数,则会把结果分成 3 This command will compare the differences between two sorted files column by column and display the results, and if no parameters are specified, the results will be divided 1 column is displayed: the 1 column is the column that appears only in the 2 column appears only in the 2 column is the column that appears only in the 3 column is the column that appears in the 1 and the 2 columns appeared in all the - is given, then the comm command will read data from the standard input device.
comm [-123][--help][--version][the1files][the2files]
Parameter:
The file content of aaa.txt and bbb.txt is as follows:
[root@localhost text]# cat aaa.txt aaa bbb ccc ddd eee 111 222 [root@localhost text]# cat bbb.txt bbb ccc aaa hhh ttt jjj
The output of the comm command is as follows:
[root@localhost text]# comm aaa.txt bbb.txt aaa bbb ccc aaa ddd eee 111 222 hhh ttt jjj First Column Second Column Third Column
The first column only contains columns that appear in aaa.txt, the second column contains columns that appear in bbb.txt, and the third column contains columns that appear in both aaa.txt and bbb.txt. The columns are separated by the tab character \t.