i have two single column text files a and b. in this two files, there are some overlap content, is there any quick way I can find out those overlapped content?
example, file a
1
2
3
4
5
6
file b
2
35
7
8
4
2 and 4 are overlapped in these two files so they should be picked up.
Use grep, something like:
grep -f file1 file2
Regards
sort -n file1 > sorted1
sort -n file2 > sorted2
comm -12 sorted1 sorted2
Building on shamrock's answer, you could merge this into one line if you're running bash:
comm -12 <(sort file_a) <(sort file_b)
The <( ) construct creates a temporary file out of the output of the command(s) inside the parens.
/fimblo