Verify the integrity and availability of key processes
Analyze boot time with regard to single processes:
systemd-analyze blame
List process sorted per cpu usage in descending order:
ps aux --sort=-pcpu | head
List processes in tree format:
ps -e --forest
Displays a dynamic real-time view of a running processes and threads:
top
List process table sorted by an arbitrary column:
ps aux | sort -n -k 3 | head
Get a visual description of process ancestry or multi-threaded applications:
pstree -aAp <pid>
Find the process ID of a running process:
pidof <process>
Intercept and log the system calls:
strace -Ff -tt <program> <arg> 2>&1 | tee strace-<program>.log
Use -p for an already running process.