vggonz / memory.sh

#!/bin/bash # adapted from https://github.com/pfoo/armbian-lib/blob/master/scripts/update-motd.d/30-sysinfo function display() { # $1=name $2=value $3=red_limit $4=minimal_show_limit $5=unit $6=after $7=acs/desc{ # battery red color is opposite, lower number if [[ "$1" == "Battery" ]]; then local great="<"; else local great=">"; fi #if [[ -n "$2" && "$2" -gt "0" && (( "${2%.*}" -ge "$4" )) ]]; then printf "%-14s" "$1:" if awk "BEGIN{exit ! ($2 $great $3)}"; then echo -ne "\e[0;91m $2"; else echo -ne "\e[0;92m $2"; fi printf "%-1s\x1B[0m" "$5" printf "%-11s\t" "$6" return 1 #fi } # display # memory and swap mem_info=$(LC_ALL=C free -w 2>/dev/null | grep "^Mem" || LC_ALL=C free | grep "^Mem") memory_usage=$(awk '{printf("%.0f",(($2-($4+$6+$7))/$2) * 100)}' <<<${mem_info}) mem_info=$(echo $mem_info | awk '{print $2}') memory_total=$(( mem_info / 1024 )) swap_info=$(LC_ALL=C free -m | grep "^Swap") swap_usage=$( (awk '/Swap/ { printf("%3.0f", $3/$2*100) }' <<<${swap_info} 2>/dev/null || echo 0) | tr -c -d '[:digit:]') swap_total=$(awk '{print $(2)}' <<<${swap_info}) if [[ ${memory_total} -gt 1000 ]]; then memory_total=$(awk '{printf("%.2f",$1/1024)}' <<<${memory_total})"G" else memory_total+="M" fi if [[ ${swap_total} -gt 500 ]]; then swap_total=$(awk '{printf("%.2f",$1/1024)}' <<<${swap_total})"G" else swap_total+="M" fi display "Memory usage" "$memory_usage" "70" "0" "%" " of ${memory_total}" echo "" # fixed newline display "Zram usage" "$swap_usage" "75" "0" "%" " of ${swap_total}" echo "" # fixed newline