Python 3 script to restart Nemo file manager window instances (e.g. if plugins crash or if Nemo becomes sluggish)

restartNemo.py

#!/usr/bin/python3

import os
import time
import signal
import platform
import subprocess


restartDesktop = True


# get system name (needed to parse wmctrl output)
sysname = platform.node()

nemoPID = None
nemoInstances = []


# get list of windows
res = subprocess.check_output( 'wmctrl -l -p -x -G'.split() ).decode("utf-8").strip()
for line in res.split('\n'):	
	
	# split line to words
	words = line.split()
	
	# parse
	win = words[0]
	desktop = words[1]
	pid = int( words[2] )
	
	#print( words )
	
	posx = int( words[3] )
	posy = int( words[4] )
	sizex = int( words[5] )
	sizey = int( words[6] )
	
	xclass = words[7]
	client = words[8]
	
	# nemo-desktop
	if xclass == 'nemo-desktop.Nemo-desktop':
		pass
	
	# nemo processes
	if xclass == 'nemo.Nemo':
		nemoPID = pid
		
		# get title from line
		title = line[ line.index(sysname)+len(sysname) :]
		
		# get path from title
		if ' - ' in title:
			path = title[ title.index(' - ')+3 :]
			
			print( xclass + '\t' + path )
			
			# add to list
			if os.path.exists( path ):
				nemoInstances.append( [path, posx, posy, sizex, sizey] )


# relaunch nemo
if nemoPID:
	
	# kill nemo-desktop
	if restartDesktop:
		#os.kill( nemoPID, signal.SIGKILL )
		os.system('nemo-desktop -q')
	
	# kill nemo
	#os.kill( nemoPID, signal.SIGKILL )
	os.system('nemo -q')
	
	# kill RabbitVCS
	os.system('pkill -f checkerservice.py')
	
	# wait a bit
	time.sleep(1)
	
	# restart nemo-desktop
	if restartDesktop:
		os.system('nemo-desktop & disown')
	
	# restart new instances
	for instance in nemoInstances:
		path,x,y,w,h = instance
		
		os.system('nemo --geometry=%ix%i+%i+%i "%s" & disown' % (w,h,x,y,path) )


# END OF SCRIPT