rvbhute

#!/bin/sh

# psmem.sh
# http://abdussamad.com/archives/488-Memory-usage-of-a-process-under-Linux.html

ps -C $1 -O rss | gawk '{ count ++; sum += $2 }; END {count --; print "Number of processes =",count; print "Memory usage per process =",sum/1024/count, "MB"; print "Total memory usage =", sum/1024, "MB" ;};'

rvbhute

#!/bin/sh

# First version, to use only a particular file-type in a folder

for f in `ls -l | egrep '^d' | awk '{print $NF}'` 
do
	cd $f
	zip $f.cbz *.jpg
	mv $f.cbz ../$f.cbz
	cd .. 

rvbhute

[Desktop Entry]
Type=Service
ServiceTypes=KonqPopupMenu/Plugin
MimeType=inode/directory;
Actions=createCBZ

[Desktop Action createCBZ]
Name=Create CBZ
Exec=zip "%u.cbz" %u/*.*
Icon=ark

rvbhute

<?php

$sendToQueue = function($num) {
    $parameters = []; // parameters including $num
    Rabbit::enqueue('comms', 'sms', $parameters, 'topic');
};

array_walk($numbers, $sendToQueue($num));

rvbhute

mail('mail@serversforhackers.com', 'Feedback', 'This is so useful, thanks!');

Mail::send('emails.test', ['key' => 'value'], function($message)
{
    $message->to('foo@example.com', 'John Smith')->subject('Welcome!');
});

rvbhute

# Sets CORS headers for request from example1.com and example2.com pages
# for both SSL and non-SSL
SetEnvIf Origin "^https?://[^/]*(example1|example2)\.com$" ORIGIN=$0
Header set Access-Control-Allow-Origin %{ORIGIN}e env=ORIGIN
Header set Access-Control-Allow-Credentials "true" env=ORIGIN
# Always set Vary: Origin when it's possible you may send CORS headers
Header merge Vary Origin

rvbhute

// my_list is an array of objects updated by ajax

var my_list = [{'id':1, 'name':'Jack'},{'id':2, 'name':'Robin'}];

// with lodash
var add_new_messages = function(data) {
    var new_list = my_list;

    new_list.push.apply(new_list, data);
    new_list = _.uniq(new_list, 'id');

rvbhute

rohit@ryujin:~$ curl -v https://deb.nodesource.com
* Rebuilt URL to: https://deb.nodesource.com/
* Hostname was NOT found in DNS cache
*   Trying 192.241.233.42...
*   Trying 2604:a880:1:20::13b:b001...
* connect to 2604:a880:1:20::13b:b001 port 443 failed: Network is unreachable
* Failed to connect to deb.nodesource.com port 443: Network is unreachable
* Closing connection 0
curl: (7) Failed to connect to deb.nodesource.com port 443: Network is unreachable

rvbhute

rohit@ryujin:~$ curl -v https://deb.nodesource.com
* Rebuilt URL to: https://deb.nodesource.com/
* Hostname was NOT found in DNS cache
*   Trying 192.241.233.42...
*   Trying 2604:a880:1:20::13b:b001...
* connect to 2604:a880:1:20::13b:b001 port 443 failed: Network is unreachable
* Failed to connect to deb.nodesource.com port 443: Network is unreachable
* Closing connection 0
curl: (7) Failed to connect to deb.nodesource.com port 443: Network is unreachable

rvbhute

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h):

• -E: will describe the underlaying queries of the \ commands (cool for learning!)
• -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)