找到两个文本文件之间的差异,每行一个项目

Question

我有两个文件:

档案1

dsf
sdfsd
dsfsdf

档案2

ljljlj 
lkklk 
dsf
sdfsd
dsfsdf

我想显示文件2中的内容,但不显示文件1中的内容,因此文件3应该如下所示

ljljlj 
lkklk 

Answer 1

grep -Fxvf file1 file2

标志意味着什么:

-F, --fixed-strings
              Interpret PATTERN as a list of fixed strings, separated by newlines, any of which is to be matched.    
-x, --line-regexp
              Select only those matches that exactly match the whole line.
-v, --invert-match
              Invert the sense of matching, to select non-matching lines.
-f FILE, --file=FILE
              Obtain patterns from FILE, one per line.  The empty file contains zero patterns, and therefore matches nothing.

Answer 2

你可以试试

grep -f file1 file2

要么

grep -v -F -x -f file1 file2

Answer 3

您可以使用该comm命令比较两个已排序的文件

comm -13 <(sort file1) <(sort file2)

Answer 4

我成功使用了

diff "${file1}" "${file2}" | grep "<" | sed 's/^<//g' > "${diff_file}"

将差异输出到文件.

Answer 5

如果你按照一定的顺序期待它们,你可以使用 diff

diff file1 file2 | grep ">"

Answer 6

join -v 2 <(sort file1) <(sort file2)