Qmail can’t receive any email with error 451 qmail-spp failure: plugins/chkrcptto: child crashed (#4.3.0) (in reply to RCPT TO command))

Problem: Qmail cant receive any email. Error: 451 qmail-spp failure: plugins/chkrcptto: child crashed (#4.3.0) (in reply to RCPT TO command)) Cause: Device /dev/full is missing. #ls -al /dev/full ls: /dev/full: No suce file or directory How to fix: mknod -m 666 /dev/full c 1 7 chown root:root /dev/full

Nautilus cannot handle “computer” location on Ubuntu(Karmic Kaula)

Problem: Last week i have experiencing error during opening Computer, Network Folders, Destop and Recycle bin on Ubuntu Karmic Kuala. And flash drive cant do the automount anymore. The error says : Nautilus cannot handle “computer” location I found out that i have upgraded my glib library under /usr/local few days ago. Solution: Remove /usr/local […]

Hamachi killed after upgrading to Ubuntu 9.10

Hamachi killed after upgrading Ubuntu 9.10 (Karmic Koala). This is because hamachi executable is compressed with upx. Steps in uncompressing Hamachi with upx [ad#ad-2] 1. Install upx-ucl (make sure you have root or sudo privileged) sudo apt-get install upx-ucl 2. locate hamachi executable (default installation /usr/bin) cd /usr/bin 3. decompress hamachi sudo upx -d hamachi […]

date function for bash commands

How to get date on bash/sh command? [ad] #!/bin/bash # Datestamp e.g 2002-09-21_24h00m DATE=`date +%Y-%m-%d_%Hh%Mm` # Day of the week e.g. Monday DATE=`date +%A` # Day number of the week 1 to 7 where 1 represents Monday DATE=`date +%u` # Date of the Month e.g. 27 DATE=`date +%d` # Month e.g January DATE=`date +%B` # […]

Recovering from a forgotten root password

To perform a system administrator task, you have to know the root password. What happens if you forgot your root password? Not to worry. Just reboot your PC and you can reset the root password by following these steps: Reboot the PC(select reboot as you log out the of the GUI) or power up a […]

Resetting Mysql root Password

‘Like locking your keys in the car, to forget your password after you’ve spent an hour installing and tweaking a new MySQL server can be an embarassment to say the least.’ [ad#squere-ads] Fortunately, if you have root access to that computer, all in NOT lost. Here are the steps when you found yourself in this […]

Installing RoundCube in cPanel

First make sure you know your mysql root password, you have to replace DATABASEPASSWORD to your mysql root password. If you have already used RoundCube installation please make sure you remove any traces of it with, cd /usr/local/cpanel/base rm -rf roundcube* mysql -p -e ‘drop database roundcube’; chattr -i /usr/local/cpanel/base/frontend/x/webmaillogin.html chattr -i /usr/local/cpanel/base/webmaillogin.cgi /scripts/upcp [ad#squere-ads] […]