Recently Updated Pages
Network Firewall
Software Firewall (Runs on operating system) Hardware Firewall (Dedicated network appliance) Mode...
System Performance
Tuned - dynamic system duning daemon rpm -qa | grep tuned check if tuned package is installed yum...
Processes & Services
Basic Definitions Application Script Process Daemon Thread Job Monitoring and Management command ...
User Management
useradd username create a user groupadd groupname create a group userdel username delete user gro...
SELinux
Access Control
File Permissions Files that are not scripts do not have x Directories have x because users can cd...
Scheduled Tasks
Scheduled Tasks crontab -e scheduled jobs -e edit at. scheduled one-off jobs * * * * * minute (0...
Shell Scripting
Basic Commands echo $0 display current shell cat /etc/shells display available shells cat /etc/pa...
File Editor
Text Editors ed (1969) original, line oriented standard for Unix ex (1976) extended, more powerf...
File Management
Linux Filesystems: ext3 ext4 xfs Windows Filesystems: NTFS FAT Basic Commands pwd print working d...