Common Tools: strace, lsof, tcpdump, pcap, grep, perl, tc, plantuml.
GDB: Breakpoint, Catchpoint, Watchpoint, Tracepoint, Process Memory, Remote Debug, Symbol Table, Pretty Printer, Debug Info.
Linux: GRUB, PXE, SystemD, FDisk, Firewall, KVM.
Linux Kernel: Build & Run, Debug Kernel with GDB, User Space to Kernel Space, Kernel Module, Character Device.
Protocols: ARP, IP Routing, DHCP, TIPC, vIP, DRDB, NFS, LDAP, Diameter.
Network Interfaces: vEth, Bridge, Bond, Dummy.
OpenSAF: Build & Install, Single-Node Cluster, Two-Node Cluster, IMM, LOG, SMF, SA-Aware Application, Non-SA-Aware Application, Healthcheck, Error Detection.