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Linux

how do i compleetly remove qmail

 Uninstalling qmailrocks

qmailctl stop

svc -u /service/qmail-pop3d
svc -u /service/qmail-smtpd
svc -u /service/qmail-send

cd /service

rm qmail-*

ps -auxw | grep qmail

root 385 0.0 0.2 1196 496 con- S 12:35PM 0:00.01 supervise qmail-send
root 387 0.0 0.2 1196 496 con- S 12:35PM 0:00.01 supervise qmail-smtpd
root 389 0.0 0.2 1196 496 con- S 12:35PM 0:00.01 supervise qmail-pop3d

kill the PIDs for qmail supervise scripts

rm readproctile

ps -auxw | grep readproctile

kill the PID(s) for...

 

How to make a Portable SUSE

 A user needs to be aware that before proceeding, backup all data he/she wish to save from their USB Hard Drive. In addition, physically disconnect any internally attached hard drives to avoid the possibility of installing to the wrong device.

1. Download the Live CD KDE (685MB) ISO, burn to a CD and start your system from the CD
2. Once SUSE is up and running, insert your USB Hard Drive
3. When prompted that a new medium has been detected, select the option to Do Nothing and check the box...

 

How to Install SUSE to a USB Hard Drive

From :http://www.pendrivelinux.com/usb-suse-installation-from-linux/

 The following tutorial covers the process of installing SUSE Linux to an external USB HardDrive using the OpenSUSE Live CD. The process is made possible due to a custom Portable SUSE script created byJames Rhodes. The user basically boots from the Live OpenSUSE CD and performs the installation via the included YaST2 Install script to install SUSE to a USB Hard drive. Then the user reboots from the Portable SUSE...

 

How To Open/Mount .img and .ima Files

 Sometimes you may come across files that have weird extensions .img and .ima are couple of them, first of these files may not be regular image files, but actually image copies of a drive or folder.
Img/Ima files are very similar to ISO files, however many backup softwares use .img and .ima format to store information.
According to Wikipedia a IMG file format can be any of these things;
A CD or DVD image file, essentially equivalent to an ISO file. On such a file, simply changing the...

 

How to install Jdk on linux

 Installing Sun JDK on Linux Installing Sun JDK on Linux (Fedora Core 3) Downloading Download the latest version of JDK from http://www.java.sun.com . I have downloaded jdk-1_5_0_01-linux-i586.bin for this tutorial. Installing Change to theTutorial Details:   directory where you downloaded the SDK ( I downloaded it in my home directory /home/deepak) and make the self-extracting binary executable: chmod +x jdk-1_5_0_01-linux-i586.bin Run the self-extracting binary, this will display the...

 

How to mount an ISO image in Linux

  by ggarron

According to Wikipedia:

An ISO image is an archive file (also known as a disk image) of an optical disc in a format defined by the International Organization for Standardization (ISO). This format is supported by many software vendors. ISO image files typically have a file extension of .ISO but Mac OS X ISO images often have the extension .CDR. The name ISO is taken from the ISO 9660 file system used with CD-ROM media, but an ISO image can also contain UDF file system...

 

How to check hardware raid on Redhat ES

 There are several RAID types of HW/SW and drivers that are in use. There are several methods available depending on the HW/SW/drivers in use.

Couple of examples; acaraid & megaraid & megaraid2

What HW and/or drivers are in the system? Can use ther 'lshw' utility to see HW and 'lsmod' to see your modules loaded in kernel. (lshw is a download tool).

There are some provided with GUI tools as well.

Check out the following...

 

How to check CPU Numbers in Linux

 [root@HC ~]# grep processor /proc/cpuinfoprocessor       : 0processor       : 1processor       : 2processor       : 3[root@HC~]# grep processor /proc/cpuinfoprocessor       : 0processor       : 1processor       : 2processor       : 3[root@ ~]# [root@ ~]# more /proc/cpuinfoprocessor       : 0vendor_id       : GenuineIntelcpu family      : 15model           : 4model name      : Intel(R) Xeon(TM) CPU 3.00GHzstepping        : 10cpu MHz        ...

 

how to check hardware on linux

 Handy bash commands for finding out stuff in Linux:
# Find CPU specifications
cat /proc/cpuinfo

# Find running kernel version
uname -r

# What compiler version do I have installed
gcc -v
gcc --version

# What is the running kernel and compiler installed
cat /proc/version

# Find X server version
X -showconfig

# What pci cards are installed and what irq/port is used
cat /proc/pci

# What kernel modules are loaded
lsmod

# Memory and swap information
cat /proc/meminfo
free
An...

 
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