vishichoudhary

#!/bin/bash

kT='/Users/vishalchoudhary/confluent-5.3.0/bin/kafka-topics'
TOPICS=$($kT --zookeeper localhost:2181 --list )

echo $TOPICS
for T in $TOPICS
do
  if [ "$T" != "__consumer_offsets" ]; then
    $kT --zookeeper localhost:2181 --delete --topic $T

vishichoudhary

psql: FATAL: Peer authentication failed for user “postgres” (or any user)

The connection failed because by default psql connects over UNIX sockets using peer authentication, that requires the current UNIX user to have the same user name as psql. So you will have to create the UNIX user postgres and then login as postgres or use sudo -u postgres psql database-name for accessing the database (and psql should not ask for a password).

If you cannot or do not want to create the UNIX user, like if you just want to connect to your database for ad hoc queries, forcing a socket connection using psql --host=localhost --dbname=database-name --username=postgres (as pointed out by @meyerson answer) will solve your immediate problem.

But if you intend to force password authentication over Unix sockets instead of the peer method, try changing the following pg_hba.conf* line:

from

vishichoudhary

--------------- + ------------ + ------------ 
Type            | Placeholder  | Example values
--------------- + ------------ + ------------ 
Year            | 2006         | 1609         
Year            | 06           | 09           
Month           | 01           | 09           
Month           | 1            | 9            
Month           | Jan          | Sep          
Month           | January      | September    
Day             | 02           | 12           

vishichoudhary

Cassandra need jdk8
Install it with

brew cask install adoptopenjdk/openjdk/adoptopenjdk8 
brew cask install won't work see https://stackoverflow.com/questions/24342886/how-to-install-java-8-on-mac

export JAVA_HOME=/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/

vishichoudhary

awk -F "\"*,\"*" '{print $2}' pincodes.csv

vishichoudhary

python -c "import random, sys; x = open(sys.argv[1]).readlines(); random.shuffle(x); print ''.join(x)," shuffle_mylines.txt  

vishichoudhary

#!/bin/bash
#
# https://github.com/Nyr/openvpn-install
#
# Copyright (c) 2013 Nyr. Released under the MIT License.


# Detect Debian users running the script with "sh" instead of bash
if readlink /proc/$$/exe | grep -q "dash"; then
	echo "This script needs to be run with bash, not sh"

vishichoudhary

from random import randint

n = int(input())
for i in range(n):
    print("{")
    value = str(randint(-180, 180))
    factor = ("%0.6f" % (randint(1,80)*1.0 / randint(1,80)) ).split('.')[1]
    lat = value+"."+factor
    value = str(randint(-180, 180))
    factor = ("%0.6f" % (randint(1,80)*1.0 / randint(1,80)) ).split('.')[1]

vishichoudhary

#include<bits/stdc++.h>
using namespace std;
#define lli long long int
#define ulli unsigned long long int
#define ll long long 
#define ull  unsigned long long
#define mp make_pair
#define s(n)   scanf("%d",&n)
#define sc(n)  scanf("%c",&n)
#define sl(n)  scanf("%lld",&n)

vishichoudhary

import abc
from plugin import PluginFunctions, PluginPriority

class PluginBasic(metaclass=abc.ABCMeta):

    @abc.abstractmethod
    def activate(self):
        """
        Will activate the plugin, this function will be trigrred by enabling the plugin.
        Every plugins need to inherit this.