我有两个很长但已排序的文件。如何获取不在第二个文件中的第一个文件的所有行?
文件1
0000_aaa_b
0001_bccc_b
0002_bcc <------ file2 have not that line
0003_aaa_d
0006_xxx
...
file2的
0000_aaa_b
0001_bccc_b
0003_aaa_d
0006_xxx
...
答案 0 :(得分:14)
这是comm
命令的用途:
$ comm -3 file1 file2
0002_bcc
来自man comm
:
DESCRIPTION
Compare sorted files FILE1 and FILE2 line by line.
With no options, produce three-column output. Column one contains
lines unique to FILE1, column two contains lines unique to FILE2, and
column three contains lines common to both files.
-1 suppress column 1 (lines unique to FILE1)
-2 suppress column 2 (lines unique to FILE2)
-3 suppress column 3 (lines that appear in both files)
答案 1 :(得分:2)
只需对它们运行diff
:
diff -c file1 file2
-c
(用于“上下文”)标记仅显示不同的行,每行包含两行。