User Instructions for Execution of Change Logger Script for Linux

Running head: COMPUTER SYSTEMS AND NETWORKS
Computer Systems and Networks
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COMPUTER SYSTEMS AND NETWORKS
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User instructions for the execution of the change logger script for Linux
Linux operating systems has demonstrated to be beneficial for the organizations as
well individual users as it provides noteworthy features that makes it versatile to numerous
computing frameworks. Regardless, similar to some other broadly useful OS’s, it is
exceedingly vulnerable against different issues such as deadlocks, imperative infringement
and other progressive conditions.
There are various commands available in Linux care utilized by the system
administrator inside the shell a portion of those commands requires super user privileges than
a basic client (for example requires root privileges to execute the command). In the majority
of the cases the default root level privileges are not available to the other users in most of the
Linux distributions such as Ubuntu and Fedora. Hence, it is recommended to utilize the
‘sudo’ in order to execute the accompanied shell script and generate the health report in the
so that the processes can be viewed for the specific Linux server or system at any point of
time.
Whenever a file/directory is created inside Linux environment, default permissions is
assigned to that file/directory is decided and assigned depending upon the umask value. This
value is set by the umask command that sets the permission value in which the first digit
represents the permissions for the user who created the file, second digit represent the
permissions for group in which the users belong to and lastly the third digit represent the
permissions for other users.
In order to make the script executable, it is suggested to use the chmod command.
This command or the system call is utilized in order to change the permissions of a specific

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file that needs some access restrictions. This command can also be used in order to change
special mode flags.
For this specific shell script the change of permission can be achieved by;
chmod + x mySysMonitor.sh
After this in order to execute the script the following command needs to be executed.
sudo ./ mySysMonitor.sh
Design consideration for Health monitoring script
According to the requirement of this project, the created script will generate a log
after collecting data about the different attributes of the Linux based system such as use of the
processor, memory as well as resource utilization. Furthermore home directories, usage of
files, and other processes, available network interfaces, their status, and finally the list of the
USB devices also will be checked and listed through the use of developed shell script along
with the current processes.
Listing the current processes
For listing all the processes in the concerned Linux system ps Command used. The
ps or the process status is utilized in order to retrieve information related to the currently
running processes in the system. The output includes the PIDs which are unique identification
numbers. A process inside a system which is often referred as task is a running instance of a
program.
Listing the top 5 CPU and RAM utilizing processes
In order to list the top 5 cpu and RAM consuming processes we used the following
command;