hi guys,

i have two files as

fileA

1
2
3
4

fileB

8
9
1
4

how can i find the common value in those two files

output

1
4

thanks in an advance.

subhendu

To find the common lines in two files
1) If the files are small you can use
grep -f file1 file2
2) If the files are big then sort both the files then
comm -12 file1 file2