ps_ram_classic

#!/bin/bash

declare -A proc_RSS
declare -A proc_comm
declare -A pid_count
declare -A pid_in_files_count
declare -A proc_files_count

file_one=$1
file_two=$2


create_list() {
    local mem
    local pid
    local cpu
    local vsz
    local rss
    local comm
    local count
    local count_f
    local _i

    while read -r mem pid cpu vsz rss comm; do
            count=0
            for _rss in ${proc_RSS[$pid]}; do ((count++)); done
                if (( count >= 1 )); then
                    proc_RSS[$pid]+=" - "$rss
                    (( pid_count[$pid]++ ))
                    (( pid_in_files_count[$pid]++ ))
                    proc_files_count[$pid]+=" "$1
                else
                   proc_RSS[$pid]+=$rss
                   (( pid_count[$pid]++ ))
                   (( pid_in_files_count[$pid]++ ))
                   proc_files_count[$pid]+=$1
                fi
                proc_comm[$pid]=$comm

    done < $1

}


get_arr() {
    local _pid
    for _pid in $@; do
      create_list $1
    shift
done
}


list_of_diff_rss() {
    local _pid
    local count
    echo -e "\n\nDIFF RSS between the files. RSS file $file_one - RSS file $file_two by process"
    printf "%20s %10s %5s\n" "DIFF RSS" "PID" "COM"
    for _pid in ${!proc_RSS[@]}; do
         if (( ${pid_in_files_count[$_pid]} >= 2 )) && \
            (( ${proc_RSS[$_pid]} != 0 )); then
            printf "%20s %10s %5s\n" $(( ${proc_RSS[$_pid]} )) $_pid ${proc_comm[$_pid]}
        fi
    done
}


get_output_for_file() {
     local _pid
     local _count=0
     local rss_sum=0
     echo -e "\n\nprocesses only in FILE $1: $2"
     printf "%20s %10s %10s\n" "RSS" "PID" "COM"
     for _pid in ${!proc_VSZ[@]}; do
         if [[ ${proc_files_count[$_pid]} == $2 ]] && \
            (( ${proc_RSS[$_pid]} != 0 )); then
            printf "%20s %10s %10s\n" ${proc_RSS[$_pid]} $_pid ${proc_comm[$_pid]} #${proc_files_count[$_pid]}
            (( _count++ ))
            rss_sum=$((  rss_sum + ${proc_RSS[$_pid]} ))
         fi
     done
     echo count processes: $_count
     echo RSS sum for all processes: $rss_sum
}

_main() {
    get_arr $@
    get_output_for_file 1 $1
    get_output_for_file 2 $2
    list_of_diff_rss
}

_main $@