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From 68e3d6e74f0941c98aaeb82b89c954c76246ba7a Mon Sep 17 00:00:00 2001
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From: John Kacur <jkacur@redhat.com>
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Date: Wed, 28 Nov 2018 04:28:53 +0100
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Subject: [PATCH 2/2] python-linux-procfs: pflags: Use argparse to create a
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help option
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The purpose of this change was to create a -h, or --help option.
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The following changes were made.
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1. pflags is now python3 only, since it uses argparse.
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2. The handling of pids or process names is improved, instead of a
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command separated list (without spaces), the more standard unix way of
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space separated command line arguements are used.
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This is explained in the help
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./pflags -h
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usage: pflags [-h] [pid [pid ...]]
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Print process flags
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positional arguments:
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pid a list of pids or names
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optional arguments:
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-h, --help show this help message and exit
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Signed-off-by: John Kacur <jkacur@redhat.com>
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---
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pflags | 12 +++++++++---
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1 file changed, 9 insertions(+), 3 deletions(-)
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diff --git a/pflags b/pflags
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index abfcfe9e9ec1..a1667fc06131 100755
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--- a/pflags
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+++ b/pflags
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@@ -1,4 +1,4 @@
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-#! /usr/bin/python
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+#! /usr/bin/python3
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# -*- python -*-
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# -*- coding: utf-8 -*-
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# print process flags
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@@ -14,8 +14,9 @@
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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-from __future__ import print_function
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+
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import procfs, re, fnmatch, sys
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+import argparse
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from functools import reduce
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from six.moves import map
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@@ -38,8 +39,13 @@ def main(argv):
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global ps
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ps = procfs.pidstats()
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+ parser = argparse.ArgumentParser(description='Print process flags')
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+ parser.add_argument('pid', nargs='*', help='a list of pids or names')
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+ args = parser.parse_args()
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+
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if (len(argv) > 1):
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- pids = reduce(lambda i, j: i + j, list(map(thread_mapper, argv[1].split(","))))
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+ pids = args.pid
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+ pids = reduce(lambda i, j: i + j, list(map(thread_mapper, pids)))
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else:
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pids = list(ps.processes.keys())
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--
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2.19.1
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