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show_ram.py
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show_ram.py
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#!/usr/bin/env python3
#
# Copyright (C) 2022 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# 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/>.
#
def get_system_memory():
from re import search as re_search
def find_value(keyword, mem_data):
regex = keyword + ':\s+(\d+)'
res = re_search(regex, mem_data).group(1)
return int(res)
with open("/proc/meminfo", "r") as f:
mem_data = f.read()
total = find_value('MemTotal', mem_data)
available = find_value('MemAvailable', mem_data)
buffers = find_value('Buffers', mem_data)
cached = find_value('Cached', mem_data)
used = total - available
res = {
"total": total,
"free": available,
"used": used,
"buffers": buffers,
"cached": cached
}
return res
def get_system_memory_human():
from vyos.util import bytes_to_human
mem = get_system_memory()
for key in mem:
# The Linux kernel exposes memory values in kilobytes,
# so we need to normalize them
mem[key] = bytes_to_human(mem[key], initial_exponent=10)
return mem
def get_raw_data():
return get_system_memory_human()
def get_formatted_output():
mem = get_raw_data()
out = "Total: {}\n".format(mem["total"])
out += "Free: {}\n".format(mem["free"])
out += "Used: {}".format(mem["used"])
return out
if __name__ == '__main__':
print(get_formatted_output())

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