Hi Friends,

I need to find the difference between two files ,

File_1 contained 4 columns, and File_2 contained 4 columns,

I need to find the difference using 1st column,

Or need to find the difference using 3st column,

For detecting differences in the first field (if this is what you mean with "column"), you could try:

paste File_1 File_2 | awk '$1 != $5'

I need the count difference of the files

Which present like
File 1

1 a
2 b
3 c
4 e

1 e
2 f
3 g

Hmm. I don't really understand what the issue is. Please wrap data and code in CODE tags.

the command should Find the difference of the row or lines

See the man page of the wc utility: "wc - print newline, word, and byte counts for each file"

Not sure I understand (or, better: sure I don't understand). You say in post #1, both files have 4 columns, but the files presented have two cols only.
Please be far more clear in specifying your requirements, telling us what comes from where and goes to where based on what conditions. And, be sure to tell rows from columns!