bashshellcommand

Create, copy, move, delete, and organize files from the bash shell

• create a folder

• create two file inside folder 1 name file1 and file2

• create another folder for moving or copying files

• copy file 1 from folder1 to folder2 using cp command

• now we have to move file2 from folder1 to folder2

• we can move using mv command

• remove file1 from folder2 using rm command

• remove folder1 from list using rmdir command

Create, view, and edit text files from command output or in an editor

• create file using cat command and touch command, redirecrt command,nano command

• edit file using nano command

• edit using vi command

• view content of file using cat command

Manage local Linux users and groups

• list out all user in linux

• id command to get id of username

• useradd command to create a user

• Using passwd command to assign a password to a user

• This commands prints the data of the configuration file. This file contains information about the user in the format.

username : x : user id : user group id : : /home/username : /bin/bash

• command to change the user id of user

• delete a user name

Set Linux file system permissions on files

• we can see the permission of file using long list command

• give all permission to group user and other in file3.txt

• removing all permission from group user and other in file4.txt

• giving all permission to user, read write permission to group and read permission to other in file4.txt

Obtain information about the system

• display information of active process by ps command

• offer dynamic view of running system using top command acts as a system monitoring tool

control processes running on it.

• killing process using kill command

• sending signal to process using kill -l

• use pkill or killall to kill an application

Configure and secure OpenSSH service

• using scp command to copy a file from one operating system to another

• file transferred using ip address of another operating system

Installation of Apache2

• We can install using following command

• update apache2 using following command

• we can test it out by typing in our IP address for the web server.

Installation of nginx

• we can install using following command