Off topic ... Some help with Linux please

[therecklessengineer]

julian@julian-HP:~$ unzip reprap-mendel-20120421.zipcd reprap-mendel-20120421
unzip:  cannot find or open reprap-mendel-20120421.zipcd, reprap-mendel-20120421.zipcd.zip or reprap-mendel-20120421.zipcd.ZIP.

This bit should be two lines

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unzip reprap-mendel-20120421.zip
then

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cd reprap-mendel-20120421
and finally

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./reprap

[Julian]

Oh, sorry ... I'll try again

[therecklessengineer]

isnt he logged on as root?

(my days of linux ended arround red hat 6 time - for years i had a box doing 'stuff' that had no gui, and not even a monitor or keyboard attached - but its all very hazy now!)

No, he's alternating between running a new shell as root and running as Julian. I can't quite pin down the exact problem here, but that is I think where it lies. Specifically with the command to run a new shell in the script.

[therecklessengineer]

You know you can use the tab key to autfill most of this?

unzip re

followed by the tab key should fill in the rest.

[Julian]

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julian@julian-HP:~$ unzip reprap-mendel-20120421.zip
Archive:  reprap-mendel-20120421.zip
  End-of-central-directory signature not found.  Either this file is not
  a zipfile, or it constitutes one disk of a multi-part archive.  In the
  latter case the central directory and zipfile comment will be found on
  the last disk(s) of this archive.
unzip:  cannot find zipfile directory in one of reprap-mendel-20120421.zip or
        reprap-mendel-20120421.zip.zip, and cannot find reprap-mendel-20120421.zip.ZIP, period.
julian@julian-HP:~$ cd reprap-mendel-20120421
bash: cd: reprap-mendel-20120421: No such file or directory
julian@julian-HP:~$ ./reprap
bash: ./reprap: Is a directory
julian@julian-HP:~$

Sorry for the delay, forum seen to be locking up, other pages are ok.

Didn't know about the tab key ... remember you're dealing with a 10 year old with the typing skills of s chimp!

[therecklessengineer]

Yup, sorry. Screwed up slightly.

Despite downloading a .zip file - it's empty.

I'll write it out again in the morning.

[Julian]

I've just checked. I do have a directory "reprap" c/w all files already in "Home" and a new "bin" directory containing the file "reprap".  Are they of any use?

On thing I did  notice was a discrepancy (there appear to be two version on the reprap wiki) in the reprap file in the bin directory.  I tried both versions to  o avail.   Is it possible to work out from the files in the reprap directory what the reprap file in the bin directory should be?

These were the two versions ...

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#!/bin/sh
cd /usr/local/reprap-nnnnnn-yyyymmdd
./reprap

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#!/bin/sh
cd /usr/local/reprap 64bit-mendel-20100719
./reprap

[Julian]

Yup, sorry. Screwed up slightly.

Despite downloading a .zip file - it's empty.

I'll write it out again in the morning.

OK, no problem, thanks ever so much for your help tonight.

[Julian]

Sorry, copied the files wrong.

One was ...

reprap 64bit-mendel-20100719

and the other

reprap 20100719

I think!

[therecklessengineer]

Having a bin directory is only necessary if it's in /usr/local/

If the folders are in your home directory then you don't need a bin or the script file.

I'm not sure where we are now exactly. You should remove any reprap directories, bin directories that you've created, and script files before doing the below.

First check we're in the home directory

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cd ~/
Then we get the file (we have to get the master .zip from github which gives us an extra step)

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wget https://github.com/reprap/release/archive/master.zip
Extract the .zip

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unzip master.zip
cd into the created directory

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cd release-master
unzip the file we should have got before

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unzip reprap-mendel-20120421.zip
Now, we're one directory deep so we'll move the directory just created to your home folder and rename it to something a little more friendly at the same time

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mv reprap-mendel-20120421 ~/reprap
So now we have the files in the folder "reprap" inside your home directory

Finally we cd into our new directory:

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cd ~/reprap/
And run the program

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./reprap

[Julian]

I did a lot of playing last night based on what you said about being easier to run all this from the home folder and ended up with a load of, what appeared to be Java warnings.  At one point unzipping the 2012 reprap file I got messages that the file was corrupt and found a 2010 file that seemed OK, however I'll clear all the stuff I put in the home folder and proceed as you suggest.

[Julian]

Hmm, very similar to what I got last night ....

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julian@julian-HP:~/reprap$ ./reprap
java.lang.UnsatisfiedLinkError: /home/julian/reprap/librxtxSerial.so: /home/julian/reprap/librxtxSerial.so: wrong ELF class: ELFCLASS32 (Possible cause: architecture word width mismatch) thrown while loading gnu.io.RXTXCommDriver
Exception in thread "RepRap" java.lang.UnsatisfiedLinkError: /home/julian/reprap/librxtxSerial.so: /home/julian/reprap/librxtxSerial.so: wrong ELF class: ELFCLASS32 (Possible cause: architecture word width mismatch)
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1778)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1703)
at java.lang.Runtime.loadLibrary0(Runtime.java:844)
at java.lang.System.loadLibrary(System.java:1051)
at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
at org.reprap.comms.GCodeReaderAndWriter.openSerialConnection(Unknown Source)
at org.reprap.comms.GCodeReaderAndWriter.init(Unknown Source)
at org.reprap.comms.GCodeReaderAndWriter.<init>(Unknown Source)
at org.reprap.machines.GCodeRepRap.<init>(Unknown Source)
at org.reprap.machines.MachineFactory.create(Unknown Source)
at org.reprap.Main.<init>(Unknown Source)
at org.reprap.Main$12.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:226)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:673)
at java.awt.EventQueue.access$300(EventQueue.java:96)
at java.awt.EventQueue$2.run(EventQueue.java:634)
at java.awt.EventQueue$2.run(EventQueue.java:632)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:108)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:643)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:275)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:200)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:185)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:177)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:138)
julian@julian-HP:~/reprap$

[Julian]

There is some stuff at the bottom of this page ...

http://reprap.org/wiki/Installing_RepRap_on_your_computer

That covers using the software with 64 bit Ubuntu (which is what I'm running).  Is that worth a try?

[therecklessengineer]

Yes, quite correct. You don't make it easy for yourself! 

Try

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cd ~/reprap/
we'll install the 64 bit version of the necessary Java libraries

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sudo apt-get install libjava3d-jni
And point the symbolic link (think 'shortcut' in Windows terms) at the new library version

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ln -sf /usr/lib/jni/libj3dcore-ogl.so

[therecklessengineer]

I have assumed that you've installed Java?

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sudo apt-get install openjdk-7-jre if you haven't