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LINUX - How to compare the values in 2 files & exit from the script

Hi All,

I have a requirement where I need to compare 2 files & if the values in the files match, it should proceed, else exit the script without proceeding further.

For e.g : Scenario 1

Quote:

cat File A
20120701,20120702,20120703

cat File B
20120701,20120702

In this case, the script should exit without proceeding further.

Scenario 2

Quote:

cat File A
20120701,20120702,20120703

cat File B
20120701,20120702,20120703

In this case, the script should proceed further.

Scenario 3

Quote:

cat File A
20120701,20120702,20120703

cat File B
20120701,20120702,20120704

In this case, the script should exit.

Can anybody shed some light on how to accomplish this.

Thanks Much
Freddie

It can be compared & matched with md5sum fileA & md5sum fileB or diff command

What about order of values, are both files always sorted the same way? For example, what should happen on this:

Quote:

cat File A
20120701,20120702,20120703

cat File B
20120703,20120701,20120702

And what about white spaces?

Adding to Smilemukul's comment you may also want to check out the comm command in bash it has some nice switches.

The diff command returns zero if the files are the same, or non-zero if they differ.

You can use an if-statement, or just the following single line:

Code:

diff 'File A' 'File B' || exit