Linux core kernel process trace and debugging apps

                           Best Linux commands to validate process or a machine.

cat /proc/self/maps

cat /proc/$PID/status

cat  /proc/dma

cat /proc/devices

cat /proc/interrupts

/sbin/lspci

/sbin/lsusb

cat /proc/net/dev

vmstat

enable 

debugger Tools :strack, ptrace, gdb,