If you received an error when login to AWS EC2 instance or any virtual machine using the PEM file by SSH command like below: $ ssh -i ~/.ssh/your_pem_file.pem username@192.168.0.102 @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: UNPROTECTED PRIVATE KEY FILE! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ Permissions 0644 for ‘/home/username/.ssh/your_pem_file.pem:’ are too open. It is required that your private key files are NOT […]
How to uninstall ssh software package from Ubuntu
The ssh (Secure Shell) package is a network protocol used to securely connect to a remote computer. It allows you to remotely log in to a server, execute commands, and transfer files securely over an encrypted connection. On Ubuntu, the ssh package is pre-installed and is commonly used to remotely manage servers and other computer […]
How to Install apt-utils with apt-get?
The apt-utils package is a collection of utilities that are used to manage the Advanced Packaging Tool (APT) system in Linux. It includes tools such as apt-config, apt-cache, and apt-cdrom, which are used to configure, cache, and manage packages on your system. To install apt-utils using apt-get, you will need to have apt-get installed on […]
a2disconf: command not found
The a2disconf command in Ubuntu or debian-based systems is used to disable an Apache2 configuration file. Apache2 is a popular web server that is commonly used to host websites on a Linux server. The a2disconf command is used to disable a specific configuration file in the Apache2 configuration directory, which is usually located at /etc/apache2/conf-enabled/. […]
chage Command Examples in Linux
chage is a command-line utility in Linux that is used to modify the password aging information for user accounts. Password aging is a security feature that allows you to specify how often users must change their passwords and how long their passwords are valid before they expire. To modify the password aging information for a […]
chage: command not found
chage is a command-line utility in Linux that is used to modify the password aging information for user accounts. Password aging is a security feature that allows you to specify how often users must change their passwords and how long their passwords are valid before they expire. To modify the password aging information for a […]
cgcreate: command not found
cgcreate is a command-line utility in Linux that is used to create and manage control groups (cgroups). Cgroups are a Linux kernel feature that allows you to limit, prioritize, and isolate the resource usage of processes and applications on the system. If you encounter the below error while running the cgcreate command: cgcreate: command not […]
cewl Command Examples in Linux
cewl is a command-line utility in Linux that is used to extract words from web pages and create a custom wordlist. It is commonly used for password cracking and other security-related tasks. cewl is a Ruby script that is run from the command prompt. To use cewl, you can simply run the command followed by […]
cewl: command not found
cewl is a command-line utility in Linux that is used to extract words from web pages and create a custom wordlist. It is commonly used for password cracking and other security-related tasks. cewl is a Ruby script that is run from the command prompt. To use cewl, you can simply run the command followed by […]
certbot Command Examples in Linux
certbot is a command-line utility in Linux that is used to manage and obtain SSL/TLS certificates for web servers. It is part of the Let’s Encrypt project, which provides free, automated SSL/TLS certificates to help secure websites and protect the privacy of users. certbot is designed to be easy to use and automate the process […]