Thanks to
Friday, 20. September 2019
Install java within conda container

apt-get update && apt-get upgrade
mkdir -p /usr/share/man/man1
apt-get install default-jdk
apt install openjdk-11-jdk

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Tuesday, 10. September 2019
Use SNS topic to send marbot alarms by email
  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:

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

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Managing EBS volumes

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

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

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Wednesday, 28. August 2019
download food 11 dataset

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

Use these commands at linux prompt:


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Wednesday, 7. August 2019
Remove old backup files

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 bkall_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 {} \;

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Monday, 5. August 2019
Types in AWS CNF

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)

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Tuesday, 25. June 2019
codes used for classification

Standard codes used for classification:
1 SC
5 ST
7 Orphan

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Sunday, 2. June 2019
Shell scripting basics

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"
echo "slave ok"

4) For loop

for i in ls
cp $path$i $new_path

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

6) Variables

7) Functions
for socket in {2..9}
mysqladmin shutdown $socket

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

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Saturday, 30. March 2019
schema conversion tool

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

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Tuesday, 26. March 2019
Install packetbeat

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

... Link (3 comments) ... Comment

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