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| Deletions are marked like this. | Additions are marked like this. |
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| /!\ The way the virtual exam white listed software (etc/vx.conf) will be rewritten early in Term 1 to better cope with software changes on CSE computers. |
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| * ~give/stable/bin/prac_install_vx [from_prac] to_prac | * '''~give/stable/bin/prac_install_vx [from_prac] to_prac''' |
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| * priv passwd | * '''priv passwd''' |
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| * priv chown <path_wildcard> . change work directory ownership from 90<uid> to the exam account to access students' files . after changing ownership, students can't start the exam. so, do this only after the exam has finished. |
* '''priv chown wildcard''' . change ownership of work directories from 90<uid> to exam account . after changing ownership, students can't start the exam. run the command after the exam has finished. {{{ marimba % ls -la exams/19T1midterm/work total 16 drwxrwxrwt 4 en1811exam en1811exam 4096 Mar 14 21:19 . drwxr-x--- 6 en1811exam en1811exam 4096 Mar 12 17:50 .. drwxrws--- 14 929389 en1811exam 4096 Mar 14 21:36 z5016573 drwxrws--- 13 906444 en1811exam 4096 Mar 12 20:02 z8470184 }}} |
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| * /home/vxconf/vx.conf.d is the repository for vx.conf files for commonly used products e.g. gcc, python, gedit, fluxbox | * '''/home/vxconf/vx.conf.d''' is the repository for vx.conf files for commonly used products e.g. gcc, python, gedit, fluxbox |
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| * ~give/stable/bin/vx-conf-product.pl * strace the command * feed the output of strace to this script * add vx.conf files as arguments . script will output files that are missing from the config files |
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=== Tips === * when the exam crashes after you authenticated with your zid, check the stderr.log file under <exam_account>/var directory. Look at the latest directories. |
=== Problems - Tips on how to solve === * when the exam crashes after you authenticated with your zid, check stderr.log file under <exam_account>/var directory. Look at the latest directories. |
Virtual Exam
Work in Progress or Draft only
Please read the documentation of virtual exam
Useful scripts
~give/stable/bin/prac_install_vx [from_prac] to_prac
- set up a standard virtual exam environment
- if from_prac != to_prac
- copy from_prac from virtual directory if exists
- copy from_prac from gaol directory otherwise
- else
- copy from_prac from gaol directory
priv passwd
- change the vxN (eg vx6) password before and after the exam with this script
- add the class account public key to the exam account (eg cs2521exam)
priv chown wildcard
change ownership of work directories from 90<uid> to exam account
- after changing ownership, students can't start the exam. run the command after the exam has finished.
marimba % ls -la exams/19T1midterm/work total 16 drwxrwxrwt 4 en1811exam en1811exam 4096 Mar 14 21:19 . drwxr-x--- 6 en1811exam en1811exam 4096 Mar 12 17:50 .. drwxrws--- 14 929389 en1811exam 4096 Mar 14 21:36 z5016573 drwxrws--- 13 906444 en1811exam 4096 Mar 12 20:02 z8470184
/home/vxconf/vx.conf.d is the repository for vx.conf files for commonly used products e.g. gcc, python, gedit, fluxbox
- prac-install-vx creates ~/exams/prac/etc/vx.conf.d and fill it with symbolic links to vx.conf files in /home/vxconf/vx.conf.d
-rw-r--r-- 1 vxconf vxconf 433 Mar 14 21:31 000-header.conf -rw-r--r-- 1 vxconf vxconf 220 Mar 14 21:31 100-basicx.conf -rw-r--r-- 1 vxconf vxconf 159 Mar 14 21:31 100-fontconfig.conf -rw-r--r-- 1 vxconf vxconf 99 Mar 14 21:31 100-rxvt.conf -rw-r--r-- 1 vxconf vxconf 202 Mar 14 21:31 200-wm-fluxbox.conf -rw-r--r-- 1 vxconf vxconf 351 Mar 14 21:31 200-wm-fvwm.conf -rw-r--r-- 1 vxconf vxconf 608 Mar 14 21:31 300-interp-perl.conf -rw-r--r-- 1 vxconf vxconf 210 Mar 14 21:31 300-interp-pylint.conf -rw-r--r-- 1 vxconf vxconf 1894 Mar 14 21:31 300-interp-python.conf -rw-r--r-- 1 vxconf vxconf 860 Mar 14 21:31 300-toolchain-binutils.conf -rw-r--r-- 1 vxconf vxconf 3374 Mar 14 21:31 300-toolchain-clang.conf -rw-r--r-- 1 vxconf vxconf 1690 Mar 14 21:31 300-toolchain-gcc.conf -rw-r--r-- 1 vxconf vxconf 105 Mar 14 21:31 300-toolchain-gdb.conf -rw-r--r-- 1 vxconf vxconf 79 Mar 14 21:31 300-toolchain-make.conf -rw-r--r-- 1 vxconf vxconf 212 Mar 14 21:31 300-toolchain-valgrind.conf -rw-r--r-- 1 vxconf vxconf 84 Mar 14 21:31 400-browser-firefox.conf -rw-r--r-- 1 vxconf vxconf 54 Mar 14 21:31 400-browser-midori.conf -rw-r--r-- 1 vxconf vxconf 369 Mar 14 21:31 400-browser-nautilus.conf -rw-r--r-- 1 vxconf vxconf 84 Mar 14 21:31 400-viewer-evince.conf -rw-r--r-- 1 vxconf vxconf 110 Mar 14 21:31 400-viewer-xpdf.conf -rw-r--r-- 1 vxconf vxconf 328 Mar 14 21:31 500-editor-emacs.conf -rw-r--r-- 1 vxconf vxconf 300 Mar 14 21:31 500-editor-gedit.conf -rw-r--r-- 1 vxconf vxconf 52 Mar 14 21:31 500-editor-idle.conf -rw-r--r-- 1 vxconf vxconf 47 Mar 14 21:31 500-editor-nedit.conf -rw-r--r-- 1 vxconf vxconf 96 Mar 14 21:31 500-editor-spyder3.conf -rw-r--r-- 1 vxconf vxconf 26 Mar 14 21:31 500-editor-vi.conf -rw-r--r-- 1 vxconf vxconf 161 Mar 14 21:31 500-editor-vim.conf
thanks to Jashank for the original idea
- prac-install-vx creates ~/exams/prac/etc/vx.conf.d and fill it with symbolic links to vx.conf files in /home/vxconf/vx.conf.d
Problems - Tips on how to solve
when the exam crashes after you authenticated with your zid, check stderr.log file under <exam_account>/var directory. Look at the latest directories.
marimba % ls -lt ~/var | head -5 total 988 drwxr-xr-x 2 cs9024exam cs9024exam 4096 Feb 13 06:59 marimba-25528 drwxr-xr-x 2 cs9024exam cs9024exam 4096 Feb 12 20:49 wagner-7800 drwxr-xr-x 2 cs9024exam cs9024exam 4096 Feb 12 20:33 vx4-45795 drwxr-xr-x 2 cs9024exam cs9024exam 4096 Feb 12 18:39 vx4-34624
- after changing ownership of the work directories (to exam account), you can't start the exam with the same work directories.
- create a new toplevel work directory.
cd ~/exams/18s2supp mv work work.19dec mkdir work chmod 1777 work
- or remove the student's work directory
cd ~/exams/18s2supp/work priv chown z5555555 rm -r z5555555
- create a new toplevel work directory.