The error bash: nmap: command not found indicates the nmap (Network Mapper) utility is either not installed on your system or its executable is not accessible through your shell's PATH variable. Install Nmap Using Your Package Manager If nmap is not installed, use your system's package manager to in...
Shell Environment Configuration To identify the currently active command interpreter, query the SHELL environment varible: echo "$SHELL" A comprehensive list of interpreters installed on the system can be retrieved via: cat /etc/shells # Alternatively: chsh --list Modifying the default log...
Deploying Cacti requires specific system prerequisites to ensure stability and performance. The target environment must run CentOS 7 or higher with stable network connectivity. PHP version 7.x or later is required, along with a database backend such as MariaDB or MySQL version 5.7 or newer. Deployme...
Directory Navigation and File System Enspection ls: Enumerates contents within a target folder. pwd: Outputs the absolute path of the current shell environment. cd <path>: Transitions the shell to a specified directory. cd ..: Moves up one level in the hierarchy. cd -: Reverts to the previousl...
Real-time monitoring and targeted extraction are essential when troubleshooting verbose application logs on Linux systems. Standard utilities like tail, sed, and grep enable deveolpers to isolate critical stack traces without overwhelming terminal output. Real-Time Monitoring and Static Review To ob...
A shell script is a concise program designed to automate tasks on a computer. These scripts are plain text files, editable with any text editor, and executed by an interpreter without prior compilation. Your Initial Script Create a file named greeting.sh with the following content: #!/usr/bin/env ba...
Extracting Endpoints from JavaScript Files cat script.js | grep -Eo '"/[a-zA-Z0-9_/?=&]*"' | sed 's/^"//;s/"$//' | sort -u Retrieving CIDR and Organization Information for a Host List for target in $(cat targets.txt); do for ip_addr in $(dig a $target +short); do whois $ip_ad...
1. Basic Navigation 1.1 cd: Change Directory # Change to an absolute path cd /study/files # Change to a relative path cd test/ # Special directory shortcuts cd . # Current directory cd .. # Parent directory cd / # Root directory cd ~ # Home directory 1.2 ls: List Directory Contents # Basic listing l...