Linux Basics for Hackers

Linux is the hacker's operating system. Master it completely with this comprehensive guide. What's inside: • Terminal mastery — navigation, file manipulation, I/O redirection, piping • File system & permissions — chmod, chown, SUID/SGID bits, sticky bit explained • User & group management — /etc/passwd, /etc/shadow, sudo configuration • Networking on Linux — ifconfig/ip, netstat/ss, iptables basics, packet capture • Process management — ps, top, kill, background jobs, process injection basics • Bash scripting for hackers — automation scripts, reverse shells, one-liners • Privilege escalation techniques: - SUID/SGID binary abuse (GTFOBins) - Sudo misconfigurations and version exploits - Cron job hijacking and writable script abuse - PATH manipulation attacks - Kernel exploit identification - Writable /etc/passwd and shadow file attacks • Log management — reading, writing, and clearing logs for stealth • Filesystem forensics — finding sensitive files, credential hunting The essential foundation for every Linux pentester and OSCP candidate.