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