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systemd-stable/man/check-os-release.py
Zbigniew Jędrzejewski-Szmek d4dd289f82 man: recommend built-in platform.freedesktop_os_release() in our page
Python gained support for reading os-release, let's advertise it a bit more.
Our open-coded example is still useful, but let's not suggest it as the
default implementation.

I added quotes around the printed string because it looks a bit better
this way.

(cherry picked from commit ee6fd6a509)
2022-03-05 21:03:32 +00:00

37 lines
1016 B
Python

#!/usr/bin/python
# SPDX-License-Identifier: CC0-1.0
import ast
import re
import sys
def read_os_release():
try:
filename = '/etc/os-release'
f = open(filename)
except FileNotFoundError:
filename = '/usr/lib/os-release'
f = open(filename)
for line_number, line in enumerate(f, start=1):
line = line.rstrip()
if not line or line.startswith('#'):
continue
if m := re.match(r'([A-Z][A-Z_0-9]+)=(.*)', line):
name, val = m.groups()
if val and val[0] in '"\'':
val = ast.literal_eval(val)
yield name, val
else:
print(f'{filename}:{line_number}: bad line {line!r}',
file=sys.stderr)
os_release = dict(read_os_release())
pretty_name = os_release.get('PRETTY_NAME', 'Linux')
print(f'Running on {pretty_name!r}')
if 'debian' in [os_release.get('ID', 'linux'),
*os_release.get('ID_LIKE', '').split()]:
print('Looks like Debian!')