Linux is an open-source operating system (OS). An operating system is software that directly manages a system’s hardware and resources, like CPU, memory, and storage. The OS sits between applications and hardware and makes the connections between all of your software and the physical resources that do the work. Here, at https://blog.eduguru.in, We will discuss and solve real-life problems coming on Linux OS. We also know more interesting features of Linux here.
To change the hostname, follow the steps shown below. 1. Use hostname command to Change Hostname In this example, we’ll change the hostname from dev-server to prod-server. hostname command by default will display the current hostname as shown below: # hostname dev-server The following will change the hostname to prod-server. # hostname prod-server Once the … Read more
top provides an ongoing look at processor activity in real time. It displays a listing of the most CPU-intensive tasks on the system, and can provide an interactive interface for manipulating processes. It can sort the tasks by CPU usage, memory usage and runtime. can be better configured than the standard top from the procps suite. … Read more
Multi-core CPU processors are common nowadays, including dual-core processors (e.g., Intel Core Duo), quad-core processors (e.g., Intel Core i5), and hexa-core processors (e.g., AMD Phenom II X6). Also, many server-grade physical machines are equipped with more than one CPU processor. To find the number of physical CPUs: $ cat /proc/cpuinfo | grep “^physical id” | … Read more
WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! Someone could be eavesdropping on you right now (man-in-the-middle attack)! It is also possible that the RSA host key has just been changed. The fingerprint for the RSA key sent … Read more
To enable your system to give you the login prompt please do the following: Please login to your system using putty(or anyof your favourite ssh client) go to : [root@yourserver]# vi /etc/httpd/conf.d/phpMyAdmin.conf look for Allow the IP here .
Use the blow command to set the linux date #date 072511242014 where 07= mm (Month) 25=dd (Date) 11=hh (Hour) 24=mm (minute) 2014=yyyy (Year)
Linux As the root user (or user with appropriate permissions) Type “ifconfig -a” From the displayed information, find eth0 (this is the default first Ethernet adapter) Locate the number next to the HWaddr. This is your MAC address The MAC Address will be displayed in the form of 00:08:C7:1B:8C:02. Example “ifconfig -a” output: eth0 Link … Read more
I have a CentOS 5.7 linux server and use php5.3.x. On a pfSense system, you can restart services-that required root permissions using a php web page. I’m trying to do something similar, I have written some php code to execute shell commands. For example, to restart the sshd service: <?php exec(‘/sbin/service sshd restart’); ?> and … Read more
To add a user to the system: Issue the useradd command to create a locked user account: useradd Unlock the account by issuing the passwd command to assign a password and set password aging guidelines: passwd How to Delete a User Should you find that you find that you no longer want to have a specific user on the … Read more
Login to mysql and run the below command: set global net_buffer_length=1000000; set global max_allowed_packet=1000000000;