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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
2 OBC
3 SBC
4 VJNT
5 ST
6 OPEN
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"
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*}

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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...

www.sqlines.com

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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

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Sunday, 17. March 2019
python itertools module

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

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Saturday, 16. March 2019
audio visual modules for Machine Learning

Here is the list of some of the modules used for audio-visual processing using deep learning.

chroma: Feature Learning for Chord Recognition: The Deep Chroma Extractor
MFCC: Mel-frequency cepstral coefficients (MFCCs) are coefficients that collectively make up an MFC
TCD-TIMIT: An Audio-Visual Corpus of Continuous Speech
librosa
RBF: Radial Basis Function
HMM: Hidden Markov Model
VGG: Resnet 50
voxceleb-luigi: Luigi pipeline to download VoxCeleb audio from YouTube and extract speaker segments
deepfakes
obamanet
yolo

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Tuesday, 8. January 2019
google module

module for google search

!pip install google

from googlesearch import search
for url in search('"Breaking Code" WordPress blog', stop=10):
print(url)

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Wednesday, 26. December 2018
Python date and time

from datetime import datetime
date_string = "21 June, 2018"
date_object = datetime.strptime(date_string, "%d %B, %Y")

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Recent updates
Remove old backup files Cron
entry to remove all files in /home/ folder that starts...
by shantanuo (8/7/19 10:49 AM)
Types in AWS CNF List
of important Types in Amazon Cloud Formation tool: IAM (User,...
by shantanuo (8/5/19 7:36 AM)
codes used for classification Standard
codes used for classification: 1 SC 2 OBC 3 SBC...
by shantanuo (6/25/19 11:11 AM)
Shell scripting basics Here are
8 important concepts of Shell scripting that everyone should know....
by shantanuo (6/2/19 6:50 AM)
schema conversion tool This seems
to be a useful tool to convert mysql or oracle...
by shantanuo (3/30/19 6:52 AM)
Install packetbeat In order to
install packetbeat, you may need to change the windows security...
by shantanuo (3/26/19 8:01 AM)
python itertools module from itertools
import groupby s = 'abcccccbba' for w, v in groupby(s):...
by shantanuo (3/17/19 3:22 PM)
audio visual modules for Machine
Learning Here is the list of some of the modules...
by shantanuo (3/16/19 1:08 PM)
google module module for google
search !pip install google from googlesearch import search for url...
by shantanuo (1/8/19 10:38 AM)
Python date and time from
datetime import datetime date_string = "21 June, 2018" date_object =...
by shantanuo (12/26/18 12:14 PM)
Infer types in pandas This
will return the mixed datatypes but this can be slow....
by shantanuo (12/16/18 3:50 PM)
Extract words from Marathi wikipedia
1) Download the polyglot pickled marathi model wget http://bit.ly/12FI1xV mv...
by shantanuo (11/4/18 10:06 AM)
Google Input tools Google suddenly
stopped download of Input Tools package without giving any reason....
by shantanuo (9/10/18 7:44 AM)
Python objects and methods Here
are important python objects and their methods int __mul__, __add__,...
by shantanuo (8/18/18 3:11 PM)
JSON to DF Here is
how to read a JSON file into pandas dataframe. import...
by shantanuo (8/8/18 1:12 PM)
managing servers using python Fabric
is a high level Python library designed to execute shell...
by shantanuo (8/4/18 10:01 AM)
backup mysql users It is
easy to backup mysql users - wget percona.com/get/pt-show-grants; perl pt-show-grants
by shantanuo (5/20/18 3:42 PM)
About python 1 everything is
an object (class instances) 2 methods depends upon class of...
by shantanuo (5/20/18 2:52 PM)
mysql and shell command date
-d"-1 day ago" +'%b%d' equals to mysql -Bse"select date_format(date(date_add(now() ,...
by shantanuo (5/16/18 7:47 AM)
Preserving comments in Stored Procedure
You can write multi line comments in a stored procedure...
by shantanuo (5/12/18 12:56 PM)
Custom slack command Here are
5 steps to add any API to your slack channel....
by shantanuo (4/25/18 6:59 AM)
stack bookmarklet This bookmarklet will
help to quickly access stack pages linking to current page...
by shantanuo (1/10/18 10:47 AM)
Manage S3 like rsync ####
create bucket aws s3 mb s3://johntest123/ #### rsync all files...
by shantanuo (12/22/17 12:04 PM)
apache docker container issues If
apache docker container does not start then make these changes......
by shantanuo (11/10/17 3:00 PM)
Install aws client on centos
If pip is not installed, then the following command will...
by shantanuo (10/26/17 9:51 AM)

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