Today we will see an interesting issue where the logs are collected in /var/adm/messages as per rsyslog.conf. However the log file size in increasing infinitely and is not rotating. It...
In this post we will look at an interesting feature of linux to write zeros or random characters to any device in Linux. One old way is to use dd...
Today we will see how to correct one of the common error message seen when we try to add a virtual machine in KVM on RHEL server. Lets try to...
Some Linux Operating Systems, or RHEL versions sometimes disable console video and you might be not able to see remote console after POST. This happens due to a kernel issue...
1. Resource limit directives, their equivalent ulimit shell commands and the unit used Directive ulimit equivalent Unit LimitCPU= ulimit -t Seconds LimitFSIZE= ulimit -f Bytes LimitDATA= ulimit -d Bytes LimitSTACK=...
If you working as a system admin, you might have faced issue of multiple TIME_WAIT connections on a server resulting in no/slow connections to the specific server(s). To resolve such...
Today we will see how to view user login history in linux. For this, we will use “last” command which gives login history for any specific username mentioned. If we...
Sometimes when you browse solution to some issue, you might have seen “make sure your kernel supports —- option i.e. during its build, this option is specified and enabled ?”...
Have you ever worked in latest versions of fedora ? If yes, you might have observed some directories “/run/user/some-number” when doing “df -h”. Lets see the command output. [saket@localhost ~]$...
Today in this post, we will look how to run a command with root user, i.e. using sudo on remote server. And how to place it in a loop to...