I just went back in to the admin and tried again and here are the results at more explicit, without having to remember.<br>This is the instructions from the source:<br>Or, you may also conduct a media check prior to burning the ISO, from<br>
the command line as follows:<br><br> sha1sum /[path]/[to]/[ydl].iso [ENTER]<br><br>... which will output a SHA1SUM which you compare against the SHA1SUM in <br>the SHA1SUM file.<br>----------------------------------------<br>
And what i receive is shown below:<br>using upper case, lower, case any case, sslsha1 or whatever, feral cat 2, does not matter. pure fecal experience.<br><br><br><br>$ sha1sum /Users/polymorphous/Desktop/fire_downL/yellowdog-6.2-ppc-DVD_20090629.iso <br>
-bash: sha1sum: command not found<br>-------------<br>$SHA1SUM /Users/polymorphous/Desktop/fire_downL/yellowdog-6.2-ppc-DVD_20090629.iso<br>-bash: SHA1SUM: command not found<br><br>-------------<br>$ SHA1 yellowdog-6.2-ppc-DVD_20090629.iso<br>
-bash: SHA1: command not found<br><br>$ sha1 yellowdog-6.2-ppc-DVD_20090629.iso<br>-bash: sha1: command not found<br><br><br><br><div class="gmail_quote">On Tue, May 25, 2010 at 6:02 PM, Derick Centeno <span dir="ltr"><<a href="mailto:dcenteno@ydl.net">dcenteno@ydl.net</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">On Tue, 25 May 2010 11:13:51 -0700<br>
<div class="im">james gray <<a href="mailto:pointerleft@gmail.com">pointerleft@gmail.com</a>> wrote:<br>
<br>
</div><div><div></div><div class="h5">> Yes frustration does exist. !.<br>
> I attempted sha1 in Bash and it does not work. seemingly. so i posted<br>
> a question about 15 minutes ago, as to what is the default shell<br>
> that Linux is built on.<br>
><br>
> after all of the bs below, as i was cleaning off the desk top i did<br>
> see a file with a Linux download drive inside and dragged it, the<br>
> drive onto the terminal curser to get its path and tried to check it<br>
> in a debug option and got nowhere.<br>
><br>
> This is a small fragment of what i did try over a period of 3 hours:<br>
> and several other variations from the man sha1 in BASH , i did go on<br>
> line and found :<br>
> openssl sha1 <path/filename.ext><br>
><br>
> I then went in and did a debug option:<br>
> $ openssl sha1 -d<br>
> /Users/polymorphous/Desktop/yellowdog-6.2-ppc-DVD_20090629.iso<br>
> BIO[00409A30]:ctrl(6) - FILE pointer<br>
> BIO[00409A30]:ctrl return 0<br>
> BIO[00409A30]:ctrl(108) - FILE pointer<br>
> BIO[00409A30]:ctrl return 0<br>
> /Users/polymorphous/Desktop/yellowdog-6.2-ppc-DVD_20090629.iso: No<br>
> such file or directory<br>
> BIO[00409A30]:Free - FILE pointer<br>
><br>
> A issue of file permissions kept coming up so i did a Mac OS Disk<br>
> Utility file permissions check and repair.<br>
><br>
> and then did this:<br>
><br>
> $ openssl sha1 -hex<br>
> /Users/polymorphous/Desktop/yellowdog-6.2-ppc-DVD_20090629.iso.download/<br>
> Read Error in<br>
> /Users/polymorphous/Desktop/yellowdog-6.2-ppc-DVD_20090629.iso.download/<br>
> 256:error:0200B015:system library:fread:Is a directory:bss_file.c:167:<br>
> 256:error:20082002:BIO routines:FILE_READ:system lib:bss_file.c:168:<br>
> --------------------------------------------<br>
> $ openssl sha1 -c<br>
> /Users/polymorphous/Desktop/yellowdog-6.2-ppc-DVD_20090629.iso.download/<br>
> Read Error in<br>
> /Users/polymorphous/Desktop/yellowdog-6.2-ppc-DVD_20090629.iso.download/<br>
> 276:error:0200B015:system library:fread:Is a directory:bss_file.c:167:<br>
> 276:error:20082002:BIO routines:FILE_READ:system lib:bss_file.c:168:<br>
> -----------------------------------------<br>
> $ open sha1 -verify<br>
> /Users/polymorphous/Desktop/yellowdog-6.2-ppc-DVD_20090629.iso.download/<br>
> 2010-05-25 10:14:14.664 open[643] No such<br>
> file: /Users/polymorphous/sha1 ----------------------------------<br>
> $ openssl sha1 -signature $ open sha1 -verify<br>
> /Users/polymorphous/Desktop/yellowdog-6.2-ppc-DVD_20090629.iso.download/<br>
> open: No such file or directory<br>
> sha1: No such file or directory<br>
> -verify: No such file or directory<br>
> Read Error in<br>
> /Users/polymorphous/Desktop/yellowdog-6.2-ppc-DVD_20090629.iso.download/<br>
> 653:error:02001002:system library:fopen:No such file or<br>
> directory:bss_file.c:278:fopen('open','r')<br>
> 653:error:20074002:BIO routines:FILE_CTRL:system lib:bss_file.c:280:<br>
> 653:error:02001002:system library:fopen:No such file or<br>
> directory:bss_file.c:278:fopen('sha1','r')<br>
> 653:error:20074002:BIO routines:FILE_CTRL:system lib:bss_file.c:280:<br>
> 653:error:02001002:system library:fopen:No such file or<br>
> directory:bss_file.c:278:fopen('-verify','r')<br>
> 653:error:20074002:BIO routines:FILE_CTRL:system lib:bss_file.c:280:<br>
> 653:error:0200B015:system library:fread:Is a directory:bss_file.c:167:<br>
> 653:error:20082002:BIO routines:FILE_READ:system lib:bss_file.c:168:<br>
> poly-morphous-Computer:~ polymorphous$ 2010-05-25 10:14:14.664<br>
> open[643] No such file: /Users/polymorphous/sha1<br>
> -bash: 2010-05-25: command not found<br>
><br>
><br>
> On Mon, May 24, 2010 at 7:28 AM, Derick Centeno <<a href="mailto:dcenteno@ydl.net">dcenteno@ydl.net</a>><br>
> wrote:<br>
><br>
> > Given what you posted previously I'm concerned whether you are<br>
> > familiar with the nuances involved in both using the SHA1SUM value<br>
> > and invoking the SHA1SUM test on the .iso you choose to download to<br>
> > burn onto a DVD.<br>
> ><br>
> > The difficulty is that if you are not familiar with it, you could<br>
> > easily download a defective .iso and burn an equally defective DVD -<br>
> > again, again, and yet again. This process ad nauseum wastes<br>
> > download time and burning time.<br>
> ><br>
> > Given how you already reacted, the potential frustration resulting<br>
> > from producing an incomplete and/or faulty DVD may be a process to<br>
> > avoid completely. Unfortunately without understanding the usage of<br>
> > the SHA1SUM value and the SHA1SUM test there is no way to determine<br>
> > if the .iso you downloaded before burning the DVD exactly matches<br>
> > the product originally released by Fixstars (or any other Linux<br>
> > distribution).<br>
> ><br>
> > If you determine that the information posted at the mirrors<br>
> > regarding the SHA1SUM are unclear I'd be happy to attempt a more<br>
> > effective explanation and post it here.<br>
> ><br>
> > All the best...<br>
<br>
</div></div>I noticed your post so I'm going to explain the procedure for using<br>
the SHA1SUM command and using the SHA1SUM value step by step.<br>
<br>
<br>
It doesn't matter what shell you are in, the SHA1SUM command will work<br>
if used in the correct syntax. You already know that when the shell<br>
prompt shows $, you are in user mode; when the prompt shows #, you<br>
are in root mode.<br>
<br>
Notice: I believe that the SHA1SUM test can be executed in user mode.<br>
It's been some years since I had to download and test an .iso download<br>
myself. If you have any difficulty in using the user mode, then just<br>
execute the test and the procedures I explained below from within root<br>
mode.<br>
<br>
It is a good idea to set your browser to send all downloads to one<br>
specific directory, for me I call this directory Downloads. So what<br>
you see below is that within bash I've moved into the Downloads<br>
directory; it is this directory where a .iso would be downloaded into.<br>
What follows is my switching from bash to ksh while staying within user<br>
mode:<br>
<br>
[aguila@arakus Downloads]$ ksh<br>
$<br>
<br>
Now regardless whether I am in bash, ksh or any other shell as long as<br>
I have moved into the same directory where the downloaded .iso file<br>
exists. I execute the SHA1SUM command exactly in the following manner:<br>
<br>
$SHA1SUM yellowdog-6.1-ppc-DVD_20081119.iso<br>
<br>
Explanation:<br>
Note that after $ the entire name SHA1SUM is typed. The command is<br>
followed by the name of the downloaded file which ends in .iso; the<br>
above is merely an example. After .iso merely press the Enter key and<br>
then a SHA1SUM value associated with the downloaded .iso file will be<br>
generated.<br>
<br>
This generated number needs to be compared against the SHA1SUM value<br>
which the vendor reports as the correct value. If the two values (the<br>
one generated by the SHA1SUM test on the file downloaded onto your<br>
computer and the value reported by the vendor) match, then you can be<br>
sure that the downloaded file was not corrupted in transmission as it<br>
was downloaded onto your computer.<br>
<br>
The matching sequence -- what to notice:<br>
The SHA1SUM test generates as many as 40 characters which include a<br>
mixture of letters and numbers in a specific sequence. Each letter and<br>
number must exactly match the sequence reported by the vendor.<br>
<br>
In our case, the vendor is Fixstars because they produced Yellowdog<br>
Linux. Therefore we need to find a file where they report the SHA1SUM<br>
value which represents a clean and working copy of Yellowdog Linux. An<br>
example of such a file is located here:<br>
<br>
<a href="http://ydl.oregonstate.edu/iso/SHA1SUM" target="_blank">http://ydl.oregonstate.edu/iso/SHA1SUM</a><br>
<br>
You will notice that the SHA1SUM value is on the left, and the file<br>
name of the .iso associated with that unique SHA1SUM value is on the<br>
right. The way to read this (and similar files) is that each row/line<br>
is distinct and separate from the one above. Therefore the SHA1SUM<br>
value associated with yellowdog-6.1-ppc-DVD_20081119.iso produced by<br>
Fixstars is to the immediate left.<br>
<br>
If you have followed my example up to this point where we have<br>
downloaded the above .iso, then only after the .iso has completely<br>
downloaded do I run/execute the SHA1SUM command on my computer as I<br>
explained above. My computer should then generate the SHA1SUM value for<br>
the file I downloaded -- if there is any deviation from the sequence<br>
the vendor reports; download the .iso file again. Maybe you have a<br>
"dirty" or noisy connection, there is interference or another problem.<br>
<br>
It is recommended that you download these very large files using<br>
nothing less than DSL or faster. If you still have problems choose a<br>
mirror closer to where you live. If you are in Australia, downloading<br>
from Oregon makes no sense. Find a closer mirror to you.<br>
<br>
Finding a mirror closer to where you are doesn't change the SHA1SUM<br>
values you need to compare; it does increase the chances however that<br>
the .iso you download will be cleaner and have less transmission errors<br>
as the distance to get to you is shorter.<br>
<br>
You can execute the SHA1SUM test from any shell within the user mode<br>
Please note that any Linux distribution would require use the SHA1SUM<br>
value in a similar way where the SHA1SUM command executed on the<br>
downloaded .iso file which generates a SHA1SUM value is compared<br>
against the SHA1SUM reported by the vendor. Different vendors will<br>
report different SHA1SUM values for their respective products what<br>
remains the same across vendors and distributions are the comparison<br>
procedures.<br>
<br>
If you want more references the resource below may be helpful:<br>
<br>
<a href="http://pcsupport.about.com/od/termsi/g/isofile.htm" target="_blank">http://pcsupport.about.com/od/termsi/g/isofile.htm</a><br>
<br>
Also feel free to visit and participate on the Yellowdog Linux Board,<br>
here: <a href="http://yellowdog-board.com/" target="_blank">http://yellowdog-board.com/</a><br>
<br>
All the best...<br>
<div><div></div><div class="h5">_______________________________________________<br>
yellowdog-general mailing list - <a href="mailto:yellowdog-general@lists.fixstars.com">yellowdog-general@lists.fixstars.com</a><br>
Unsuscribe info: <a href="http://lists.fixstars.com/mailman/listinfo/yellowdog-general" target="_blank">http://lists.fixstars.com/mailman/listinfo/yellowdog-general</a><br>
HINT: to Google archives, try '&lt;keywords> site:<a href="http://us.fixstars.com" target="_blank">us.fixstars.com</a>'<br>
</div></div></blockquote></div><br>