Linux, Ubuntu, Debian, Mint, CentOS Tutorials
Linux provides a Swap file which is used as a memory or RAM. Typically currently running processes, tasks and jobs use memory and RAM in order to store volatile information. But in some cases, the available memory space is not enough. When the memory filled up a disk-based memory file named Swap is used to … Read more
GCC (GNU Compiler Collection) is a collection of tools used to compile different programming languages source code into binary, executables, or libraries. GCC supports a lot of programming languages like C, C++, Java, Objective-C, Go, Fortran, Ada, etc. A lot of open-source projects use the GCC to compile source code to binary. In this tutorial, … Read more
Linux provides the cron job for the jobs, tasks, or processes which should be run at the specified intervals. A cron job can be configured for different intervals like daily, weekly, every two days at the specified time, etc. One of the most used intervals is running a job every minute. Run Cron Job In … Read more
Linux provides the $PATH environment variable in order to store the paths or location of the binaries or executables. When a command or executable is called from the shell or application the $PATH environment variable is used to look up the locations. The $PATH variable stores multiple locations which are inspected for the specified command … Read more
Task Manager is a special tool used to list current running processes, RAM usage, Disk usage, Network usage, etc. Task managers are very important to monitor and detect system slowdowns etc. Linux provides a lot of task management tools that are more capable than the Windows Task Manager. In this tutorial, we will list and … Read more
Linux operating system manages and uses different system resources. The memory or RAM is one of the most important system resources where every running process, command, service, the job requires and uses some memory. So a typical system has a lot of processes and services it uses and manages a lot of memory. A typical … Read more
RPM-based Linux distributions like CentOS, RHEL, Fedora use the yum package manager in order to update, list, install and remove packages. Alternatively, the new command dnf is also adopted for these Linux distributions for package management. If we want to list installed packages in CentOS, RHEL or Fedora we can use yum or dnf commands. … Read more
Most of the modern operating systems provide the screen lock or screen saver for security reasons. Also, distributions like Ubuntu, Debian, CentOS, RHEL, Fedora provides the screen lock or screen saver by default. The screen saver term comes from the old times when the computer is not used some beautiful and interesting pictures are shown … Read more
Bash and bash scripts executed and terminated after execution. After the bash script execution is complete some information about the script is returned. This information is called exit status or exit code. The exit status or exit code can be also returned by using the exit command by using explicitly. Exit Status Every shell command … Read more
Operating systems like Windows, Linux, MacOS, etc. use the hosts file in order to store domain name/hostname IP relations. Simply the hosts file is used like a local DNS server where the hostnames resolved into IP addresses. These operating systems follow hosts file -> local DNS cache -> DNS server in order to resolve the … Read more