How to monitor amount of data transferred over a specific port
sudo iftop -i lo -f “port 8015”Django-like testrunner for python projects
#!/usr/bin/env python
import argparse
import collections
import unittest
import sys
def main():
parser = argparse.ArgumentParser(description='Django-like testrunner')
parser.add_argument('specific_test', metavar='', type=str, nargs='?', help='Specifc test')
parser.add_argument("--failfast", action="store_true")
parser.add_argument("--verbosity", type=int, default=1)
args = parser.parse_args()
loader = unittest.TestLoader()
all_tests = loader.discover('.', top_level_dir="./")
suite = unittest.TestSuite()
if args.specific_test:
def walk_tests(tests):
if isinstance(tests, collections.Iterable):
for item in tests:
walk_tests(item)
return
if tests.id().startswith(args.specific_test):
suite.addTest(tests)
elif not str(tests).startswith("test"):
sys.exit("Error in file %s" % tests)
walk_tests(all_tests)
else:
suite.addTests(all_tests)
result = unittest.TextTestRunner(verbosity=args.verbosity, failfast=args.failfast).run(suite)
return result.wasSuccessful()
if __name__ == "__main__":
if not main():
sys.exit(1)What command hides behind alias?
To check what command is assigned to the alias use type command:
$ type gl
gl is aliased to `git log --oneline'CPU benchmark
CPU benchmark from Dell Precision 15 5510 Core-i5 i5-6440HQ
$ sysbench cpu run --time=5
sysbench 1.0.9 (using system LuaJIT 2.1.0-beta3)
Running the test with following options:
Number of threads: 1
Initializing random number generator from current time
Prime numbers limit: 10000
Initializing worker threads...
Threads started!
CPU speed:
events per second: 1157.88
General statistics:
total time: 5.0008s
total number of events: 5792
Latency (ms):
min: 0.80
avg: 0.86
max: 3.74
95th percentile: 1.06
sum: 4998.26
Threads fairness:
events (avg/stddev): 5792.0000/0.00
execution time (avg/stddev): 4.9983/0.00List all IP addresses in a network
To list ip addresses of all connected to the network devices, use this command:
nmap -sn 192.168.0.0/24Install flashplayer in Firefox
I have flashplayer installed on my system from the official Adobe repository, but Firefox for some reason does not have flash plugin installed. You can check if your browser supports flash by navigating to this url
To make Firefox aware of flashplugin, try to create a symlink here:
cd http://isflashinstalled.com/ && ln -s /usr/lib64/flash-plugin/libflashplayer.so .Monitor process with top
One liner to monitor a process with the name /wshub:
top -p "$(pgrep -f /wshub)"Run command as a different user
linux
| 31 Oct 2017
Command runuser allows to run a command as a different user. You must be root to be able to run that command:
sudo runuser -l vagrant -c "GH=1 env"Monitor cpu and memory usage of the process
Print every second cpu and memory usage of the process:
watch -n 1 "ps -eo pid,pcpu,pmem,args | kazy -i xnotitle -e kazy"