Sorry for the top-post, but...
Have you tried 'openssl dgst -sha1 <isoname>' ? I'm not in front of my OS
X box right now so I don't remember if it works the same way there, but
this is how I do the checksums on my Linux box. I believe some versions
of openssl equate that with the 'openssl sha1 <isoname>' command you tried
below as well.
-Rob
Yes frustration does exist. !.
> I attempted sha1 in Bash and it does not work. seemingly. so i posted a
> question about 15 minutes ago, as to what is the default shell that Linux
> is built on.
>
> after all of the bs below, as i was cleaning off the desk top i did see a
> file with a Linux download drive inside and dragged it, the drive onto the
> terminal curser to get its path and tried to check it in a debug option
> and
> got nowhere.
>
> This is a small fragment of what i did try over a period of 3 hours:
> and several other variations from the man sha1 in BASH , i did go on line
> and found :
> openssl sha1 <path/filename.ext>
>
> I then went in and did a debug option:
> $ openssl sha1 -d
> /Users/polymorphous/Desktop/yellowdog-6.2-ppc-DVD_20090629.iso
> BIO[00409A30]:ctrl(6) - FILE pointer
> BIO[00409A30]:ctrl return 0
> BIO[00409A30]:ctrl(108) - FILE pointer
> BIO[00409A30]:ctrl return 0
> /Users/polymorphous/Desktop/yellowdog-6.2-ppc-DVD_20090629.iso: No such
> file
> or directory
> BIO[00409A30]:Free - FILE pointer
>
> A issue of file permissions kept coming up so i did a Mac OS Disk Utility
> file permissions check and repair.
>
> and then did this:
>
> $ openssl sha1 -hex
> /Users/polymorphous/Desktop/yellowdog-6.2-ppc-DVD_20090629.iso.download/
> Read Error in
> /Users/polymorphous/Desktop/yellowdog-6.2-ppc-DVD_20090629.iso.download/
> 256:error:0200B015:system library:fread:Is a directory:bss_file.c:167:
> 256:error:20082002:BIO routines:FILE_READ:system lib:bss_file.c:168:
> --------------------------------------------
> $ openssl sha1 -c
> /Users/polymorphous/Desktop/yellowdog-6.2-ppc-DVD_20090629.iso.download/
> Read Error in
> /Users/polymorphous/Desktop/yellowdog-6.2-ppc-DVD_20090629.iso.download/
> 276:error:0200B015:system library:fread:Is a directory:bss_file.c:167:
> 276:error:20082002:BIO routines:FILE_READ:system lib:bss_file.c:168:
> -----------------------------------------
> $ open sha1 -verify
> /Users/polymorphous/Desktop/yellowdog-6.2-ppc-DVD_20090629.iso.download/
> 2010-05-25 10:14:14.664 open[643] No such file: /Users/polymorphous/sha1
> ----------------------------------
> $ openssl sha1 -signature $ open sha1 -verify
> /Users/polymorphous/Desktop/yellowdog-6.2-ppc-DVD_20090629.iso.download/
> open: No such file or directory
> sha1: No such file or directory
> -verify: No such file or directory
> Read Error in
> /Users/polymorphous/Desktop/yellowdog-6.2-ppc-DVD_20090629.iso.download/
> 653:error:02001002:system library:fopen:No such file or
> directory:bss_file.c:278:fopen('open','r')
> 653:error:20074002:BIO routines:FILE_CTRL:system lib:bss_file.c:280:
> 653:error:02001002:system library:fopen:No such file or
> directory:bss_file.c:278:fopen('sha1','r')
> 653:error:20074002:BIO routines:FILE_CTRL:system lib:bss_file.c:280:
> 653:error:02001002:system library:fopen:No such file or
> directory:bss_file.c:278:fopen('-verify','r')
> 653:error:20074002:BIO routines:FILE_CTRL:system lib:bss_file.c:280:
> 653:error:0200B015:system library:fread:Is a directory:bss_file.c:167:
> 653:error:20082002:BIO routines:FILE_READ:system lib:bss_file.c:168:
> poly-morphous-Computer:~ polymorphous$ 2010-05-25 10:14:14.664 open[643]
> No
> such file: /Users/polymorphous/sha1
> -bash: 2010-05-25: command not found
>
>
> On Mon, May 24, 2010 at 7:28 AM, Derick Centeno <dcent...@ydl.net> wrote:
>
>> Given what you posted previously I'm concerned whether you are familiar
>> with the nuances involved in both using the SHA1SUM value and
>> invoking the SHA1SUM test on the .iso you choose to download to burn
>> onto a DVD.
>>
>> The difficulty is that if you are not familiar with it, you could
>> easily download a defective .iso and burn an equally defective DVD -
>> again, again, and yet again. This process ad nauseum wastes
>> download time and burning time.
>>
>> Given how you already reacted, the potential frustration resulting from
>> producing an incomplete and/or faulty DVD may be a process to avoid
>> completely. Unfortunately without understanding the usage of the
>> SHA1SUM value and the SHA1SUM test there is no way to determine if
>> the .iso you downloaded before burning the DVD exactly matches the
>> product originally released by Fixstars (or any other Linux
>> distribution).
>>
>> If you determine that the information posted at the mirrors regarding
>> the SHA1SUM are unclear I'd be happy to attempt a more effective
>> explanation and post it here.
>>
>> All the best...
>>
>> On Sat, 22 May 2010 11:44:35 -0700
>> james gray <pointerl...@gmail.com> wrote:
>>
>> > Thank you Henry Olders
>> > I was hoping to get a file map, here / here / here /.
>> > I could spend hours days weeks years looking at the plethora of Linux
>> > distro`s, trying to figure out what is what.
>> > And the People at Linux wonder why more people in the general public
>> > do not get involved.
>> > Thank you.
>> > some day if i get the time from writing code i will try to make it a
>> > mission to clarify clarity in Linux distro`s.
>> > Thank you
>>
>> _______________________________________________
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>>
> _______________________________________________
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