[ML-General] very strange Linux problem

[david]

Mysterious problem solved (I think.)

The g++ command was being called in a shell script that was
multi-thousand lines long (Qt stuff.)  Some permission problems between
the two machines' file attributes were not set correctly (prior to this
I had taken the easy way out for other problems and did some things as
root.) 
In the Qt script, well prior to the commands invocation, some other
shell variables were fouled up due to those permission problems.  This
causes trouble down the line in shell scripts, a major problem which
I've seen occur for many years.  Makes one want to bang his head against
the wall when those gremlins happen.

I think that was what was happening, as when I fixed those permission
problems, now that script can "find" the missing command.

Ya gotta love computers.  <sigh>

Thanks, all.
David Merchant



On 02/18/2016 10:11 AM, Hunter Fuller wrote:
> I don't know how you disabled it. If you just never had it installed,
> then do this as root:
> apt-get install -y openssh-server
>
> --
> Hunter Fuller
>
>
>
> On Wed, Feb 17, 2016 at 9:06 PM, david <ainut at knology.net
> <mailto:ainut at knology.net>> wrote:
>
>     As mentioned, the Qt script uses the full pathname, starting from
>     root (/.)  The executable is about 8 levels down.
>
>     Can y'all refresh my memory on how to turn back on an "ssh" coming
>     in, please?  It has been a very long time...  It's because I keep
>     my "programmer" machines completely separate from the (more
>     susceptible) email machine.  That way, i can answer your q's
>     without having to write down 3 pages of stuff and then key them
>     back into this machine.  :) 
>
>     David
>
>
>
>
>     On 02/17/2016 04:51 PM, Will wrote:
>>
>>     If you can't find another way to figure it out, you can always
>>     use strace to figure out where exactly it's looking for those
>>     files and adjust your include paths or file locations to match.
>>
>>     Kinsey
>>
>>     On Feb 17, 2016 3:20 PM, "david" <ainut at knology.net
>>     <mailto:ainut at knology.net>> wrote:
>>
>>         I'm trying to setup a cross-compile from the pc running
>>         Debian jessie to
>>         an RPi2 also running jessie.  This is for a Qt environment so
>>         I'm using
>>         Qt recipe on page wiki.qt.io/RaspberryPi2EGLFS
>>         <http://wiki.qt.io/RaspberryPi2EGLFS>.  Everything works fine
>>         until I get to the ".configure" command in step 7.  Phase 1
>>         of the
>>         .configure works fine, but in phase 2, where it tries to
>>         "make" using a
>>         g++ command, it returns an error "file not found!"  I can go
>>         to that
>>         directory and actually SEE the actual g++ file exists!
>>         Further, when I type (this is all using bash shell) "./g++"
>>         command name
>>         (leaving out the full name only in this email), it also says
>>         "file not
>>         found!"  And I still see it in an "ls" command as well as in the
>>         windowed "file manager."
>>
>>         This is bizarre.  Unless there is an embedded control
>>         character or
>>         something in the filename, I'm totally lost.  I have *never*
>>         seen any
>>         version of any operating system do this.
>>         Oh, and that entire directory tree was built using automagic
>>         build tools
>>         downloaded from Qt's git site.
>>
>>         Not even sure how to rename that file if I keep getting "file
>>         not found"
>>         errors while using shell command line interface.
>>
>>         Help, please!
>>
>>         Thanks,
>>         David Merchant
>>
>>
>>
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