Category Archives: how-to


sar command usage and details examples sar command usage and details examples System Activity Report – SAR used to report on various system loads, including CPU activity, memory/paging, device load, network. Linux distributions provide sar through the sysstat package.

Example :

sar command, sar usage, sar details, sar examples


how-resolve-error-failchk-DB_RUNRECOVERY-Fatal-error-run-database-recovery

Now to resolve error failchk DB_RUNRECOVERY Fatal error run database recovery Now to resolve error failchk DB_RUNRECOVERY Fatal error run database recovery When trying to install an application through yum [Yellowdog Updater, Modified] You may get an error message saying from dbenv->failchk: DB_RUNRECOVERY: Fatal error, run database recovery error message is shown below.

What should we do now, its simple, You first try clearing the yum repository as below.

You were still shown the error message as above, You will need to rebuild the rpm database. Try the command rpm –rebuilddb

You will get the Read more…


installing-whatsapp-windows-linux

How to install whatsapp on Windows and Linux Operating Systems How to install whatsapp on Windows and Linux Operating Systems We have already covered about installing x86 Android KITKAT 4.4 on Windows and Linux Operating systems. You can follow this link to complete the Process. https://www.earneasy.net/installing-android-kitkat-on-windows-or-linux-operating-using-virtualbox/ Once you have installed the Android. You can simply follow the normal steps you do to install Whatsapp. but,  here one cache, that is that you cannot able to install the whatsapp directly because the installation is like a TAB install. so, we are going to do a workaround, its simple. You Read more…


how to configure pop3 imap email-id in thunderbird How to configure pop3 imap email-id in thunderbird, step by step guide for easy understanding. First Step is to install the Thunderbird on your Computer. We have already covered about installing the Thunderbird on Windows, Linux and MAC operating systems.You can find it here STEP 1 : Open the thunderbird, Choose Tools and click Account Settings STEP 2 : Now, click Account Actions as shown on the image below and click >> Add Mail Account. STEP 3 : Now, Type in the details you wan to show as your name, Read more…


install-kolab-org-community-centos-Linux

How to install Kolab.org community on Linux and use it The Kolab.org Community is a Free Software which has a unified communication software and collaboration system that you can install on your own server. It offers Mail and Calendar, You can say kind of an alternative to Microsoft Exchange and not easy installable Open Xchange Community Edition (by the way, when you ask OX that i cannot able to install use their Repository they will advise you to buy services from their partners) You can install it on your own server and use it and kolab is are Read more…


Exporting and Importing the Putty SSH configuration sessions in Windows i know for many admins migrating or transferring the 100s of SSH,telnet or sftp configuration made on putty i hard. There are few easy steps for migrating or transferring the putty sessions configurations. Method 1 : Using the regedit.exe click start and type >> regedit.exe and press enter. Expand it to >> HKEY_CURRENT_USER\Software\SimonTatham\PuTTY\Sessions as shown below Few lines of the sessions.reg file will like as below.

Now, transfer the exported putty-sessions.reg file to the new system and just double click. You will be shown message as below, Read more…


iotop-tool-find-bandwidth

iotop tool to find bandwidth used during the sampling period DISK READ and DISK WRITE are the block I/O bandwidth used during the sampling period. SWAPIN and IO are the percentages of time the thread spent respectively while swapping in and waiting on I/O more generally. PRIO is the I/O priority at which the thread is running (set using the ionice command). Controls: left and right arrows to change the sorting column, r to invert the sorting order, o to toggle the –only option, p to toggle the –processes option, a to toggle the –accumulated option, q to Read more…

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