I am having problems getting the algebra filter to work properly. Here are the details, I would appreciate any suggestions.
Running on Redhat Enterprise Linux 3
Apache 2.0.46-44
PHP 4.3.2-19
perl 5.8.0-88.9
Moodle version 1.3.4
pix.php v1.8
mimeTex v1.4
Everything works fine in the texdebug.php page
algebradebug.php reports:
First Stage Translation "No Text Output Available"
Second Stage Translation "No Text Output Available"
Show Image - a very long string of errors I could upload if it will help? Best on my reading of the forum until we get First and Second stage translation working this won't help?
If I manually run ./algebra2tex.pl x/2 the output is \frac{x}{2}
The permissions on algrebra2tex.pl are -rwx-rwsr-x
If you need any more information please let me know. I would love to get this working for our math department.
Get the latest version of algebradebug.php here: http://cvs.sourceforge.net/viewcvs.py/*checkout*/moodle/moodle/filter/algebra/algebradebug.php?rev=1.12
and let me know what errors are reported.
and let me know what errors are reported.
Thank you for the quick response and hurrah, the problem is fixed! The issue was my use of setgid on the algebra2tex.pl script which apparently prevents setuid??? In any case I download your updated algebradebug.php and change prermissions. I still got an error with the stage one tex translation which I have copied below. When I saw the "Can't do setuid" and the "The file permissions of algebra2tex.pl are: 102775" it occurred to me that the permissions on the algebra2tex.pl script might be the problem. I dropped the setgid on the algebra2tex.pl file and the script now works correctly. I still need to test use of the conversion our our live moodle pages but I am hopeful that with the debug script working the live site will work as well.
Error message from Stage One Tex Translation
There is a problem with either Perl or the script algebra2tex.pl
Can't do setuid" and the
Notice: Undefined variable: status in /home/studentuofdjesuitssl/html/moodle/filter/algebra/algebradebug.php on line 115
The shell command
cd /home/studentuofdjesuitssl/html/moodle/filter/algebra; ./algebra2tex.pl x/2
returned status =
The file permissions of algebra2tex.pl are: 102775
Error message from Stage One Tex Translation
There is a problem with either Perl or the script algebra2tex.pl
Can't do setuid" and the
Notice: Undefined variable: status in /home/studentuofdjesuitssl/html/moodle/filter/algebra/algebradebug.php on line 115
The shell command
cd /home/studentuofdjesuitssl/html/moodle/filter/algebra; ./algebra2tex.pl x/2
returned status =
The file permissions of algebra2tex.pl are: 102775
The permissions on algrebra2tex.pl are -rwx-rwsr-x
This is a bit strange - you are running algebra2tex.pl setgid. I don't see why it might cause trouble, but try changing permissions to -rwx-rwxr-x, i.e. chmod 775
Tex is working,Algebra not. Your new debug script says:
There is a problem with either Perl or the script algebra2tex.pl
Can't locate HTML/Entities.pm in @INC (@INC contains: . /usr/lib/perl5/5.8.5/x86_64-linux-thread-multi /usr/lib/perl5/5.8.5 /usr/lib/perl5/site_perl/5.8.5/x86_64-linux-thread-multi /usr/lib/perl5/site_perl/5.8.5 /usr/lib/perl5/site_perl /usr/lib/perl5/vendor_perl/5.8.5/x86_64-linux-thread-multi /usr/lib/perl5/vendor_perl/5.8.5 /usr/lib/perl5/vendor_perl) at AlgParser.pm line 9. BEGIN failed--compilation aborted at AlgParser.pm line 9. Compilation failed in require at ./algebra2tex.pl line 4. BEGIN failed--compilation aborted at ./algebra2tex.pl line 4.
The shell command
cd /server/www/secure-html/moodle/filter/algebra; ./algebra2tex.pl x/2
returned status =
The file permissions of algebra2tex.pl are: 100775
You need to install the Perl module HTML::Entities from www.cpan.org
See this discussion:
http://moodle.org/mod/forum/discuss.php?d=13800
See this discussion:
http://moodle.org/mod/forum/discuss.php?d=13800
Thanks, I will ask it our admin.
Fixed!! As always, you were right 
, thanks