Error - resize2fs: Operation not permitted While trying to add group Extending LVM partition and resize it # lvextend -L+1G /dev/VGw3/calc # resize2fs /dev/VGw3/calc Today while resizing the LVM I was receiving the below error message. resize2fs: Operation not permitted While trying to add group #1234 The fix is to remove and recreate the journal. If ..
How do you find NFS version on a UNIX or Linux host? The NFS service will be listed in the fourth column titled service. The NFS version will be listed in the second column. To find the NFS version bellow commands can be used # rpcinfo -p | grep nfs program ..
How to use memory hotplug? First make sure that your linux kernel is configured or compiled with hotplug memory support, Once the server is with new linux kernel, new memory hotplug command will be available. Hotplug Add memory # echo \"(physical memory address)\" > /sys/devices/system/memory/probe This command is to identify new memory. If ..
HP ADU report is quite simple and easy in Linux Operating System. ADU CLI is distributed using Red Hat Package Manager (RPM) packages To start the application: If /usr/sbin is already added in your path, just type: # hpaducli -f adu-report.zip or # /usr/sbin/hpaducli -f adu-report.zip More options can be found by \"hpaducli -help\" ..
Today I had a requirement to search for a string in all the files which has particular word or text. You can find or search for the string in linux machine as below. To find the string in all directories # find / -name \"*.*\" | xargs grep -i \'find string\' To ..
Today I came across a situation to edit the user profile on my linux dev machine. I have added few alias in my server into file /etc/profile. Now I have a requirement like I want my changes has to get effect without server reboot. Most of us would know about sysctl ..
If you are using gnome vim enhanced version supports gui version. But normally as a sever admin we work in terminal. Open multiple files in a terminal using below command # vi file1 file2 file3 Now from the above command vim/vi editor opens file1 on the terminal You can switch over the ..
Check fiber channel exist in server or not # lspci | grep -i fibre OUTPUT 00:00.1 Fibre Channel: ServerEngines Corp. Emulex OneConnect 10Gb FCoE Initiator # find /sys -type d -name fc_host /sys/class/fc_host Check the Port number by using find command # find $(find ..
Set user defined extensions in Tomcat, Just do URL mapping in web.xml as explained below, <servlet> <servlet-name>test.jsp</servlet-name> <jsp-file>/test.jsp</jsp-file> </servlet> <servlet-mapping> <servlet-name>test.jsp</servlet-name> <url-pattern>/test.html</url-pattern> </servlet-mapping> ..
When you try to install skype using yum, you might get warnings/error or message as dependencies missing. For this you must know that skype is a 32 bit application. That means u need some 32 bit libs required for this setup, In this quick tip i will show you ..
Clipboard Command+C = Copy Command+V = Paste Command+X = Cut Command+A = Select All Screen capture Command+Shift 3 = Capture the screen to a file Command Ctrl Shift 3 = Capture the screen to the clipboard Command+Shift 4 = Select an area to be captured to a file ..
This helps to avoid serverload because of badbots. For me normally if u have build a good dynamic sitemap then you can allow other spider or bots to crawl your entire site. But if is not then there will be issues like server load spike, wastage of Bandwidth etc. To block ..
You can easily boot your android phone by following the below steps, 1. Hold down the power button in your phone until the option menu comes out on the screen. 2. Then, long press the Power Off option and you will obtain a message on the screen to verify whether ..
The below commands can be used to calculate system resource used by server. You can find which commandline is using more CPU resource. But ofcourse you can calculate the system resource by using top command, but still below are the below commands or other methods which can be used to ..
Defining a AVD(Android Virtual Device) How to Open AVD Manager from Eclipse IDE Window --> Android Virtual Device Manager Click on "New" at top. Choose name and options. Click OK. Note:We can create multiple AVDs. But your system performance might go down. ..