How to avoid zombie process in Linux ?

Zombie process is the process which dies/finishes immediately and whose parent didn’t cares to handle the status … Read more

How to create process in Linux using fork system call ?

Below is simple process creation program using fork system call, fork return child’s process Id in main/parent … Read more

C program to check total and free RAM memory in Linux

Following C program helps you to identify what is the total and free memory / RAM available … Read more

Example for using shared data between two Unix threads

Following is the simple example to show, how we can create two threads at a time and … Read more

Creating a simple thread in Linux using pthread library api’s

In this post, we create a simple thread using pthread library API “pthread_create” and wait for this … Read more

Presentation – Operating System Concepts

OS Concepts

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Understanding /proc/meminfo – Analysing Linux memory utilisation

/proc/meminfo Provides valuable information about the system’s RAM usage. (utilization of run time memory).  This varies by … Read more

Understanding Linux page cache memory

If data is written, it is first written to the Page Cache and managed as one of … Read more

Understanding filesystem presence for a simple C program when executing

In our last two posts, we tried to learn writing of a very minimal simple C program … Read more