[ydl-gen] thank you

[Bill Fink]

Actually, sha1sum on YDL resides in /usr/bin, which is a directory
that is searched by ordinary users.  It is only commands in /sbin
and /usr/sbin that aren't normally available to users, and for
which the "su -" trick might be helpful.

It could be that you don't have coreutils installed, which sha1sum
is a part of.  You can check with:

	rpm -q coreutils

If it's not already installed, you can install it via:

	yum install coreutils

which will need to be run as root (su).

					-Hope this helps

					-Bill



On Thu, 27 May 2010, Derick Centeno wrote:

> On Thu, 27 May 2010 07:30:30 -0700
> james gray <pointerleft at gmail.com> wrote:
> 
> > I just went back in to the admin and tried again and here are the
> > results at more explicit, without having to remember.
> > This is the instructions from the source:
> > Or, you may also conduct a media check prior to burning the ISO, from
> > the command line as follows:
> > 
> >         sha1sum /[path]/[to]/[ydl].iso [ENTER]
> > 
> > ... which will output a SHA1SUM which you compare against the SHA1SUM
> > in the SHA1SUM file.
> > ----------------------------------------
> > And what i receive is shown below:
> > using upper case, lower, case any case, sslsha1 or whatever, feral
> > cat 2, does not matter. pure fecal experience.
> > 
> > 
> > 
> > $ sha1sum
> > /Users/polymorphous/Desktop/fire_downL/yellowdog-6.2-ppc-DVD_20090629.iso
> > -bash: sha1sum: command not found
> > -------------
> > $SHA1SUM
> > /Users/polymorphous/Desktop/fire_downL/yellowdog-6.2-ppc-DVD_20090629.iso
> > -bash: SHA1SUM: command not found
> > 
> > -------------
> > $ SHA1 yellowdog-6.2-ppc-DVD_20090629.iso
> > -bash: SHA1: command not found
> > 
> > $ sha1 yellowdog-6.2-ppc-DVD_20090629.iso
> > -bash: sha1: command not found
> > 
> 
> Ok, James, believe it or not we are a little closer to getting this
> done.
> 
> First point, sha1 and sha1sum are different commands.  You can discover
> that for yourself by doing:
> 
> $man sha1
> $info sha1
> $man sha1sum
> $info sha1sum
> 
> The above can also be executed in root.
> 
> Ok.  Obviously, sha1sum did not work in user mode; execute the sha1sum
> command in root mode.  Keep in mind that in Linux, there exist a few
> commands which can only be executed from within the directory where
> their binaries exist which means you have to know where those
> directories are.  The short-cut is to invoke the root mode using the
> - flag which tells root that all commands throughout the entire
>   directory tree in Linux are available to you as though they were in
>   the same top-level directory and available to be immediately executed.
> The sequence to invoke this from user mode is the following:
> 
> [aguila at arakus ~]$ su -
> Password: 
> [root at arakus ~]# 
> 
> For clarification, the user mode and root mode should have different
> passwords as a way of maintaining clarity for Linux and yourself which
> account (root or user) one is using at any one time.
> 
> Once you are in root mode try executing the sha1sum again.  It should
> work without difficulty.  Make sure that the sha1sum value produced on
> the .iso exactly matches the sha1sum value reported by the vendor.
> 
> Remember it doesn't matter which shell you are using -- bash, ksh, csh,
> ash -- what matters is that you execute the root mode, as you have
> demonstrated that sha1sum cannot be executed from within user mode.
> 
> Remember the short-cut I explained above.
> 
> All the best...