ov

#!/bin/sh
RED='\033[0;32m'

printf "\n______________________________________________________________\n\n$(tput sgr0)"
printf ${RED}$(tput bold)"Starting Computer System Overview Screen"
printf "\n______________________________________________________________\n\n$(tput sgr0)"

print_message(){	
	printf "\n\n"
	printf ${RED}$(tput bold)"$1"
	printf "\n\n$(tput sgr0)"
}


get_iostat(){
	print_message "CURRENT IOSTAT" 1 60
	iostat
}


get_vmstat(){
	print_message "VMSTATS"
	vmstat | awk ' END {print "No_process_waiting_for_CPU: " $1, "\nMemory_Idle: " $4, "\n\nSwapped_In_memory: " $9, "\nSwapped_Out_Memory: " $10, "\n\nCPU_time_runnning_user_code: " $15, "\nCPU_time_runnning_system_code: " $16, "\n\nInterupts_per_sec: " $13, "\nContext_switches_per_sec: " $14} '| column -t
}

get_simple_info(){
	print_message "Simple INFO"
	echo "No of cores":  `nproc`
	echo "Uptime"
	w
}

get_max_thread_running_proc(){
	print_message "Max thread Running process[3rd column is number of threads]"
	ps axo pid,ppid,nlwp,cmd | sort -nr| head -n 5
}

get_highest_memory_proc(){
	print_message "PROCESS WITH HIGEST MEMEORY"  30 70
	ps aux| sort -rk 4,4 | head -n 5| awk '{print $2, $4, $11}'| column -t
}

get_highest_cpu_proc(){
	print_message "PROCESS WITH HIGHEST CPU" 
	ps aux| sort -rk 3,3 | head -n 5| awk '{print $2, $3, $11}'| column -t
}

get_disk_states(){
	print_message "DISK USAGE" 1 10
	df -Th | sort -rk 6| head -n 3| column -t
}

get_help(){
	printf "\n i: IOSTAT"
	printf "\n d: DISK USAGE"
	printf "\n s: Simple INFO"
	printf "\n c: PROCESS WITH HIGHEST CPU"
	printf "\n m: PROCESS WITH HIGEST MEMEORY"
	printf "\n t: Max thread Running process"
	printf "\n v: VMSTAT"

}


case $1 in
	i)
		get_iostat
	;;
	d)
        get_disk_states
    ;;
    s)
		get_simple_info
	;;
	c)
		get_highest_cpu_proc
	;;
	m)
		get_highest_memory_proc
	;;
	t)
		get_max_thread_running_proc
	;;
	v)
		get_vmstat
	;;
	h)
		get_help
	;;
	help)
		get_help
	;;
	"")
		get_iostat
		get_vmstat
		get_disk_states
		get_simple_info
		get_highest_memory_proc
		get_highest_cpu_proc
		get_max_thread_running_proc
	;;
esac



printf "\n\n"