In this section, we see the right approach of OS, Program, Process, tuning the physical resources, Installation of RedHat Linux OS on AWS Cloud and use Putty on Windows to connect to Linux instances.

In this section, we see concepts of command prompt, w command, loginctl command and detailed description on Sessions, Scope and Cgroup.

In this section, we see how to set constraints on users and sessions and how scope provides control over constraints.

In this section, we see how a unit file is read by Cgroup and how constraints are set in the unit file.

In this section, we see how physical resources are sliced into smaller portions and given to sessions and to use shortcuts that enhance productivity skills in OS.

In this section, we see the detailed steps by using commands how a terminal in Linux can be recorded.

In this section, we see how one user with one session can run multiple commands and in one session how to create multiple windows and panes using shortcuts.

In this section, we see concepts on Device Drivers, User Space, Kernel Space, Systemcall, Context Switching and how important it is to efficiently use Systemcall to reduce the time complexity

In this section, we see how Netcat is capable of starting a program with the port number and how to create a chat program to share texts and output of a command

In this section, we see how a Systemcall Management can be done and how to audit and store the log files for further analysis

In this section, we see how a kernel creates a PID for each process and the right approach of the PID.

In this section, we learn about the very power tool Valgrind to check whether the program has a memory leakage

In this section, we see how Systemctl command is used to create a unit file and using this file we can start, stop service and implement the Cgroup

In this section, we see detailed description of CPU and different commands used to see the information of CPU.

In this section, we see how to create a unit file and to implement Cgroup in it is easier and use a powerful tool “locate” to search a file.

In this section, we see how by using the “lshw” command we can get details of different hardware in the system and how to create html pages. Detailed description of CPU sharing and different types of CPU scheduling.

In this we use a powerful choice Timer to schedule jobs

In this section, we see the detailed description of the Testdisk tool and how it is used to recover a file in a partition.

In this section, we see the powerful tool pmlogger to collect the performance metrics of a system in real time and show it in a graphical board.

In this section, we see how the “tcpdump” command can go into network level, can capture packets and gives detailed description of IP address with port number.