#!/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/>.

pct_used=$(awk '
/^MemTotal:/ {
	mem_total=$2
}
/^MemFree:/ {
	mem_free=$2
}
/^Buffers:/ {
	mem_free+=$2
}
/^Cached:/ {
	mem_free+=$2
}
END {
  free=mem_free/1024/1024
  used=(mem_total-mem_free)/1024/1024
  total=mem_total/1024/1024

  pct=0
  if (total > 0) {
    pct=used/total*100
  }

  # short text
  printf("%.f\n", pct)
}
' /proc/meminfo)

echo "<span font='FontAwesome'></span> $pct_used%"