Moodle error: Query failed in load_user_capability

In Moodle 1.8 platform, whenever you encounter the captioned error during login, the /var is likely to be full.

The solution, obviously... clean up the /var to feed more free space to it.

Tracing IP and e-mail header information

I found some resources for tracing IP and e-mail header stuff...

Find the IP of the e-mail sender via header:
http://www.infobanc.com/articles/faida5_12.htm

Trace the IP location:
http://visualroute.visualware.com/

List and comparisons of emulators...

Mayank Sharma provided a nice articles on some alternative emulators other than VPC:

Ref:  http://www.linux.com/articles/60742

They are QEMU, Bochs, Virtual Box, VMware Player and VMware server...

phpgraphy album title length

The title length of albums could be modified at:
found in file "/base/include/yorsh-varval-request_data.inc.php"

field dirtitle

verison 0.93.

apache: /libphp5.so: cannot restore segment prot after reloc: Permission denied

If apache cannot start, with error: /libphp5.so: cannot restore segment prot after reloc: Permission denied, try the following:

% setenforce 0

VsFTP 500 OOPS: cannot change directory

cannot change directory:/home/***
500 OOPS: cannot change directory:/home/*******
500 OOPS: child died

Solution (in prompt)
% setsebool ftpd_disable_trans 1
% service vsftpd restart

To make the effect working even reboot, add option -P in setsebool

Reference: http://www.phpchina.com/14881/viewspace_8888.html

Using find command in Unix

Just for my memory...

find . -exec grep "keywords" '{}' \; -print

This handly statement finds files contains "keywords" and print the line and the file name as well.

Ref: http://www.athabascau.ca/html/depts/compserv/webunit/HOWTO/find.htm#EX03

Context level of Moodle

From lib/accesslib.php

25 // context definitions
26 define('CONTEXT_SYSTEM', 10);
27 define('CONTEXT_PERSONAL', 20);
28 define('CONTEXT_USER', 30);
29 define('CONTEXT_COURSECAT', 40);
30 define('CONTEXT_COURSE', 50);
31 define('CONTEXT_GROUP', 60);
32 define('CONTEXT_MODULE', 70);
33 define('CONTEXT_BLOCK', 80);

MS Word closed right after it starts

Whenever you experience this sort of problem, most likely it will be the problem of file: normal.dot

Try to seek and delete that file to solve the problem.

Ref: http://word.mvps.org/FAQs/AppErrors/ProbsOpeningWord.htm

Create create VPN connection in Windows XP

In Windows XP, make sure the Telephony, Remote Access Connection Manager, and Remote Access Auto Connection Manager services are running.

Ref: http://support.microsoft.com/default.aspx?scid=kb;en-us;329441