On Mon, Sep 21, 2009 at 8:35 AM, Girish Venkatachalam
<[email protected]> wrote:
> $ sha1sum file.iso
>
> Normally you don't use it with any switch.
>
> You have to execute the same command on two different machines and
> verify the output.
>
> It is usually enough to look at the first 4 and the last 4 characters
> of the output.
>

If you have a SHA1SUMS or a similar file in the directory where you
downloaded the files,
sha1sum -c <file containing all checksums>
will check them.

This of course is only useful if there are many files that you have
downloaded and want to check it
all in one shot.

---
Ashok `ScriptDevil` Gautham
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