mytop.sh

#!/bin/bash

function help {
  echo -en "\033cPritisnite:
  q - izhod iz programa (quit)
  h - izpiše pomoč in čaka na pritisk tipke (help)
  c - menjava vidnosti izpisa ukaza (command toggle display)
  m - menjava vidnosti izpisa porabe pomnilnika (memory toggle display)
  p - menjava vidnosti izpisa zasedenosti cpu (cpu toggle display)
  u - menjava izpisa uporabnika (user toggle display)
  \nPritisnite 'q' za nadalejevanje..."
  while read -n 1 -s; do if [[ "$REPLY" == "q" ]]; then return; fi; done
}

flags=("pid" "comm" "%mem" "user" "%cpu")
while true; do
  echo -e "\033c $(ps -Ao "$(echo "${flags[*]}" | sed -e 's/\s\+/,/g;s/,$//g')" --sort=-pcpu | head -n11)"

  read -n 1 -s -t 1
  case $REPLY in
    (q) exit ;;
    (h) help ;;
    (c) [[ -n "${flags[1]}" ]] && flags[1]="" || flags[1]="comm" ;;
    (m) [[ -n "${flags[2]}" ]] && flags[2]="" || flags[2]="%mem" ;;
    (p) [[ -n "${flags[4]}" ]] && flags[4]="" || flags[4]="%cpu" ;;
    (u) [[ -n "${flags[3]}" ]] && flags[3]="" || flags[3]="user" ;;
  esac
done