FreeBSD : How to disable ACPI on boot by default
Edit /boot/loader.conf and set the following value to ” 1 ” : hint.acpi.0.disabled=”1″
Mac : How to Page up and Page down in terminal?
Using the full size desktop Apple keyboard, simply hold down SHIFT key + Page up or Page down. With a MacBook Pro, there is no such keys (Page up/Page down)… Just hold down function key ( fn ) + SHIFT + ARROW UP and/or DOWN.
RoundCube : Server Error UID COPY Error in IMAP command received by server
Since RoundCube version 0.6, you may expect the following error when trying to delete a message : Server Error : UID COPY : Error in IMAP command received by server. You probably using Courier-IMAP daemon. As commented in “main.inc.php” configuration file for default storage folders, you need to modify the folder name according to the… Read More »
Linux : Failed to update bios on PowerEdge server and CentOS
Trying to update BIOS on Dell PowerEdge server running CentOS Linux may fail to complete with no further explanation even if all software requirement has been met do do the upgrade from the OS. This is because Dell does not recognize CentOS (which is a 100% RedHat binary compatible) as a supported OS (such as… Read More »
PHP : Set upload file size
To increase (or decrease) the size of allowed uploaded file size with PHP, using php.ini or .htaccess file, just add or edit the following values : php_value upload_max_filesize <VALUE> php_value post_max_size <VALUE> Just add the amount instead the <VALUE> tag. Let’s assume you want to allow 300 megabyte file size to be uploaded to the… Read More »
Zimbra : Initializing ldap…failed.
When installing and configuring Zimbra for the first time on RHEL/CentOS 6, it return that LDAP failed to initialize and then the config script exit. The log file probably indicate the following error : Initializing ldap… *** Running as zimbra user: /opt/zimbra/libexec/zmldapinitsudo: sorry, you must have a tty to run sudo IO::Socket::INET: connect: Connection refused… Read More »
VMware Server : Performance tweak tips
VMware Server performance can be improved in so many ways… there are some recomendation that I’ve discovered when I was using this product at large before moving them to ESXi : Use preallocated virtual disk Use as less virtual hardware as possible – do not add unneeded hardware Use ext4 or XFS filesystem (if host… Read More »
VMware : convert a growable to preallocated virtual disk
VMware allow four type of virtual disk (vmdk) : 0 : single growable virtual disk 1 : growable virtual disk split in 2Gb files 2 : single preallocated virtual disk 3 : preallocated virtual disk split in 2Gb files vmware-vdiskmanager -r <source-disk> -t <type> <target-disk> Now, if you want to convert your growable disk into… Read More »
Vim : how do I search and replace text
Do the following to find and replace text string in a whole file using the Vi text editor : 1. Enter in command mode by typing ” : ” 2. Your command should look like this : :%s/search_for_text/replace_with_this_text/g NOTE : To search & replace a string containing slashes ” / “, use a coma ”… Read More »
Linux : udev renamed network interface eth0 to eth1 on RHEL6
In some rare circumstances, your system may boot without network interface and you discover the following message in dmesg : udev: renamed network interface eth0 to eth1 Since RHEL6, kudzu is no longer available since the kernel and udev take care of hardware changes. So, you need to modify using udev to get back you’re… Read More »