dotfiles/.config/dwm/scripts/mem_info.sh

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#!/bin/bash
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# Configuration variable
python_bin="/usr/bin/python3"
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memfile="/proc/meminfo"
size="G" # Change to M for MiB
# Variables
memTotal=$(cat ${memfile} | grep -i "memtotal:" | head -1 | tr -s " " | cut -d " " -f 2)
memActive=$(cat ${memfile} | grep -i "memavailable:" | head -1 | tr -s " " | cut -d " " -f 2)
memActive=$(expr ${memTotal} - ${memActive})
# Variables to calculate
memTotalM=$(expr ${memTotal} / 1024 )
memActiveM=$(expr ${memActive} / 1024)
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if [ -f ${python_bin} ] ; then
memPercentage=$(echo "n=${memActive}/${memTotal}*100 ; print(n)" | ${python_bin})
memTotalG=$(echo "n=${memTotalM}/1024 ; print(n)" | ${python_bin} | tr -s " " | cut -c1-4)
memActiveG=$(echo "n=${memActiveM}/1024 ; print(n)" | ${python_bin} | tr -s " " | cut -c1-4)
elif [ -f /usr/bin/calc ] ; then
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memPercentage=$(calc ${memActive} / ${memTotal} \* 100)
memTotalG=$(calc ${memTotalM} / 1024 | tr -s " " | cut -c1-5)
memActiveG=$(calc ${memActiveM} / 1024 | tr -s " " | cut -c1-5)
else
memPercentage=$(expr ${memActive} / ${memTotal} \* 100)
memTotalG=$(expr ${memTotalM} / 1024 | tr -s " " | cut -c1-5)
memActiveG=$(expr ${memActiveM} / 1024 | tr -s " " | cut -c1-5)
fi
# Variables to show
showMemPercentage=$(echo ${memPercentage} | cut -d "~" -f 2 | cut -d "." -f 1)
if [ "${size}" == "G" ] ; then
showMemTotal="${memTotalG}Gi"
showMemActive="${memActiveG}Gi"
elif [ "${size}" == "M" ] ; then
showMemTotal="${memTotalM}Mi"
showMemActive="${memActiveM}Mi"
else
showMemTotal="${memTotalG}Gi"
showMemActive="${memActiveG}Gi"
fi
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echo -n " "
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memshowactive=$(echo ${showMemActive})
memshowtotal=$(echo ${showMemTotal})
echo -n ${memshowactive}/${memshowtotal}
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echo " "