Linux Summary
- Difference between Unix and Linux
- Man
- Shell basics
- eBPF
- User/Context/Kernel mode
- Linux Ip config
- DNS
- File Descriptor
- Gregg Troubleshoot
- Time,Date,NTP
- limit ps per user
- SElinux install
- IP tables/firewall
- CRON
- runlevel, get default, set default
- docker
- file permissions, get facl
- adduser, deluser, limit access
- chmod, cut, df -h (disk usage), fuser (user process), lsof (what process use dir) , nginx sed, sort, uniq