1. Open the AWS SNS Management Console
2. Create and select a SNS topic
3. Click on Actions > Subscribe to Topic

4. Choose HTTPS as the protocol and set the endpint to:
https://api.marbot.io/v1/sns/ea5e

5. Configure your CloudWatch Alarms to send notifications to the SNS topic.

lsblk prints all block devices in a tree-like format.

lsblk
NAME    MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
xvda    202:0    0   8G  0 disk
└─xvda1 202:1    0   8G  0 part /
xvdf    202:80   0  90G  0 disk

If file command on the disk identifier "xvdf" shows simply "data", then there is no file system on the device and you need to create one.

file -s /dev/xvdf
/dev/xvdf: data

The total file size of the Food-5K dataset is about 1.16 GB. Here are steps to download food 11 dataset.

https://mmspg.epfl.ch/downloads/food-image-datasets/

Use these commands at linux prompt:

ftp
open tremplin.epfl.ch
FoodImage@grebvm2.epfl.ch
Cahc1moo
get Food-11.zip

Cron entry to remove all files in /home/ folder that starts with 'bk_all_dbProdSlave' and not created in the last 2 days.

59 22 * * * find /home/ -name bk_all_dbProdSlave_\* -mtime +2 -exec rm -f {} \;

Similar as above to remove compressed files:

find /home -type f \( -name "*.sql.gz" -o -name "*.tar.gz" -mtime +10 \) -exec rm -rf {} \;

List of important Types in Amazon Cloud Formation tool:

IAM (User, Group, Policy, AccessKey, Role)
Athena (NamedQuery)
Route53 (RecordSetGroup)
EC2 (SecurityGroup::Id, KeyPair::KeyName, SpotFleet)
Lambda (Function, Permission)
Events (Rule)
ApiGateway (RestApi, Method, Deployment)
Logs (LogGroup)

Standard codes used for classification:
1 SC
2 OBC
3 SBC
4 VJNT
5 ST
6 OPEN
7 Orphan

Here are 8 important concepts of Shell scripting that everyone should know.

1) Exit Code Status $?
2) here_doc
3) if_else

if [[ $mystatus = 'No' ]];then
echo "slave down"
else
echo "slave ok"
fi

4) For loop

for i in `ls`
do
cp $path$i $new_path
done

5) Positional Parameters $1, $2, $#, $@

6) Variables

7) Functions
stop()
(
for socket in {2..9}
do
mysqladmin shutdown $socket
done
)

8) Globbing - t?est [ab]* [a-c]* [^ab]* {b*,c*,*test*}

This seems to be a useful tool to convert mysql or oracle schema to redshift. select queries can also be migrated easily using...

http://www.sqlines.com/online

In order to install packetbeat, you may need to change the windows security setting.

C:\packetbeat> Set-ExecutionPolicy

Supply values for the following parameters:
ExecutionPolicy: unrestricted

Now you can install packetbeat using...
C:\packetbeat> .\install-service-packetbeat.ps1

from itertools import groupby
s = 'abcccccbba'

for w, v in groupby(s):
print (''.join(w), ''.join(v))

a a
b b
c ccccc
b bb
a a