dotfiles/.i3blocks/memory

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#!/bin/sh
# Copyright (C) 2014 Julien Bonjean <julien@bonjean.info>
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
TYPE="${BLOCK_INSTANCE:-mem}"
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echo -n "${TYPE//mem/ram} "
awk -v type=$TYPE '
/^MemTotal:/ {
mem_total=$2
}
/^MemFree:/ {
mem_free=$2
}
/^Buffers:/ {
mem_free+=$2
}
/^Cached:/ {
mem_free+=$2
}
/^SwapTotal:/ {
swap_total=$2
}
/^SwapFree:/ {
swap_free=$2
}
END {
# TODO: color (if less than X%)
if (type == "swap")
if ((swap_total-swap_free)*100/swap_total > 90)
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printf("<span foreground=\"#f2777a\">")
else if ((swap_total-swap_free)*100/swap_total > 70)
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printf("<span foreground=\"#f99157\">")
else if ((swap_total-swap_free)*100/swap_total > 40)
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printf("<span foreground=\"#ffcc66\">")
else if ((swap_total-swap_free)*100/swap_total > 10)
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printf("<span foreground=\"#99cc99\">")
else
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printf("<span foreground=\"#66cccc\">")
else
if ((mem_total-mem_free)*100/mem_total > 90)
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printf("<span foreground=\"#f2777a\">")
else if ((mem_total-mem_free)*100/mem_total > 70)
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printf("<span foreground=\"#f99157\">")
else if ((mem_total-mem_free)*100/mem_total > 40)
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printf("<span foreground=\"#ffcc66\">")
else if ((mem_total-mem_free)*100/mem_total > 10)
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printf("<span foreground=\"#99cc99\">")
else
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printf("<span foreground=\"#66cccc\">")
# full text
if (type == "swap")
#printf("%.1fG\n", swap_free/1024/1024)
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printf("%2d%</span>\n", (swap_total-swap_free)*100/swap_total)
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else
#printf("%.1f%\n", mem_free/1024/1024)
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printf("%2d%</span>\n", (mem_total-mem_free)*100/mem_total)
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# # TODO: short text
# if (type == "swap")
# #printf("%.1fG\n", swap_free/1024/1024)
# printf("%2.0f%</span>\n", (swap_total-swap_free)*100/swap_total)
# else
# #printf("%.1f%\n", mem_free/1024/1024)
# printf("%2.0f%</span>\n", (mem_total-mem_free)*100/mem_total)
#
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}
' /proc/meminfo