How to find the version history of a rpm in Linux?
cloudibee The rpm command gives you the version history & changelog of a package , when you query the package with –changelog option. Here is an example : # rpm -q…
December 2008
File Synchronization tool : Unison
Unison is a file-synchronization tool for Unix and Windows. It allows two replicas of a collection of files and directories to be stored on different hosts (or different disks on…
How to mount a ISO file
To mount a ISO file on Linux machine, you should mount it as “loop” back filesystem. The option to be used in mount command is “-o loop”. Check out the…
Linux : yum package manager
“yum” (YellowDog Updater modified) is a easy to use package manager for Linux. It installs/updates packages and all its dependencies. I started using yum and it is real good one…
Solaris Flash archive
Solaris Flash archive can be used to backup a complete system or install from new machines from the archives . With Flash installation, you can create a single reference installation…
MobileRack
Rackable systems has released mobile rack – a mobile datacenter. This MobiRack is a compact , light-weight plastic enclosure that contains servers, storage, networking components , UPS and DC power…
virt-install : Xen guest installation manager
virt-install is a python script that helps in installing & creating xen virtual machines. virt-install is command line based and virt-manager is GUI based one. You can get them from…
Vmware Virtual machine monitoring tools
Here are some of the VMware VM monitoring tools . Solarwinds Free VM monitor Veeam Monitor for VMware Infrastructure Zenoss NimBUS Vmware monitoring VizionCore vFoglight PacketTrap Akorri BalancePoint Vkernel Hyperic…
Sending mail using script
This is the sample script to send mail using script. I have used perl . You can try with shell script also , with the same way. — Contents of…
Fixing corrupted vmdk file
If your vmdk file is corrupted on Vmware server or Vmware ESX 3, you can use the tool at http://www.esxpress.com/tools/wrapgen.php to regenerate it. A good one.
Solaris : Link Aggregation : dladm
The command dladm is used to configure data-link interfaces in Sun Solaris. A configured data-link is represented in the system as interface that can be used for TCP/IP. Each data-link…
Linux Logical Volume manager – basics
Logical Volume manager (LVM) creates an abstraction layer over physical storage, that allows us to create logical storage volumes. This provides much greater flexibility than using physical storage directly. A…
Find your network interface speed and duplex settings
“ethtool” and “mii-tool” commands can be used to find the network card speed and the network link details. Find details about the network interface card : # ethtool eth0Settings for…
chage: Linux account expiration details
“chage” is the command to list & change the password aging information for linux account. The chage command changes the number of days between password changes and the date of…
Vmware 1.x server : vmware-cmd management utility
In VMware server 1.x, the Command line utility “vmware-cmd” is used to manage the Virtual machines. You can use the vmware-cmd utility to perform various operations on a virtual machine,…