Category: Linux

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How To Change OpenSSH SSH Server Port Number In Linux?

Remote access is the main method while managing Linux systems. Remote access must be secured accordingly. OpenSSH suite which implements Ssh provides this security with server and client side. OpenSSH also provides auxiliary tools to make copying or identity management easily and securely. OpenSSH servers run by default TCP port...

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How To Check Password Strength In Linux With Cracklib?

Password security is important subject in IT. We call it password but actually it is a key to enter systems. Making authentication password-less by using key based authentication is more secure but it is not always possible. So for the password based authentication password strength is important. How Can We...

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How To Set, Get and Change Bash Environment Variable?

Bash shell is used for a lot of things in Linux systems. Most of the applications run with bash. Bash is a shell but provides an environment that can be used to programming. Variables are core of the programming. Bash provides variables too. There are default variables as well as...

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How To Get File System Disk Usage In Linux?

When administrating Linux systems we can found us tracking disk usage. Linux uses different partitions to store data. There are some temp files located in /tmp or different  paths. Some applications are installed into the /opt path. So managing paths and disk usage may become hard in Linux. There are some GUI applications like...

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How To List All Partitions Of A Disk In Linux?

Operating systems use storage or disks to save data persistently. Disks are used with partitions to manage them easily. Generally operating system and data partitions are placed separately. Home directory of the Linux is separated because a problem in the home directory like fulling do no effect to the general...

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How To Get Linux Kernel Version?

Linux kernel is the core of the Linux based operating systems we call them simply Linux. But sometimes they called Linux Distributions. Kernel initialize system with hardware. Manages hardware to provide services for upper layer operating system application. Kernel do memory management which means allot memory for applications or frees...

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How To Check Memory Usage Of Linux?

Linux operating system is popular with its efficient memory usage. Also Linux operating systems provide a lot of details about their memory usage. In this tutorial we will look into details of the memory usage information. There are different ways to get memory usage information. Alternatively we can call this...

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How To Get CPU (Central Processing Unit) Info and Number of CPU’s In Linux?

CPU is central part of the computer systems.  They provide all logic and computation power to the operating system that runs on them. In general we look the frequency and brand of the CPU like i5,i7. There are very different features in detail in CPU’s. There are different commands to...

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How To Create Fast Simple Database and Table With Php and Sqlite

Php is web programming language very popular among developers. Php is actually a scripting language which means there is no need to compile the code to run. So write and run is the motto of php language. Php scripts can be run on Linux systems like bash, Perl scripts too....

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