Search This Blog

Google Analytics

Sunday, June 23, 2024

LTA's Official MRT Map 2024 (Thomson-East Coast Line)

Singapore’s Land Transport Authority has just released an updated official MRT map including seven new stations on the Thomson-East Coast Line (TEL): Tanjong Rhu, Katong Park, Tanjong Katong, Marine Parade, Marine Terrace, Siglap, and Bayshore. It shows where the stations are and how they will connect to other MRT lines.

Wednesday, April 10, 2024

Useful openssl commands to generate certificates and keys

I hope the following will come handy when it comes to generating key pairs and certificates.
# Generate a Private Key
openssl genrsa -out privatekey.pem 2048

# Generate a self-signed certificate
openssl req -new -x509 -key privatekey.pem -out self_signed_certificate.pem -days 365

# Convert PEM certificate to CER format
openssl x509 -inform PEM -in self_signed_certificate.pem -outform DER -out self_signed_certificate.cer

# Convert a PEM certificate to a PFX (PKCS#12) file
openssl pkcs12 -export -out certificate.pfx -inkey privatekey.pem -in self_signed_certificate.pem

# Extract a private key from a PFX file (contain bag attributes)
# openssl pkcs12 -in certificate.pfx -nocerts -nodes -out privatekey_frompfx.pem
openssl pkcs12 -in certificate.pfx -nocerts -nodes -out privatekey_frompfx.key

# Extract a private key (no bag attributes) - identical to privatekey.pem
openssl rsa -in privatekey_frompfx.key -out privatekey_frompfx.key

# Extract public key from key pair
openssl rsa -in privatekey_frompfx.key -pubout -out publickey.key
#openssl rsa -in privatekey.pem -pubout -out publickey2.key

# Convert CER to CRT
openssl x509 -inform DER -in self_signed_certificate.cer -out self_signed_certificate.crt
#openssl x509 -inform PEM -in self_signed_certificate.cer -out self_signed_certificate.crt

# Convert CRT to CER
openssl x509 -in self_signed_certificate.crt -outform DER -out self_signed_certificate2.cer

#####
# Generate a Certificate Signing Request (CSR) - optional if going to generate a self-signed
#openssl req -new -key privatekey.pem -out certificate_request.csr
#openssl x509 -req -in certificate_request.csr -signkey privatekey.pem -out self_signed_certificate3.crt

Sunday, January 14, 2024

Oracle: Find out total number of records of all tables

An efficient method to find out the total record counts of all tables in an Oracle database.
select table_name,
  to_number(extractvalue(xmltype(dbms_xmlgen.getxml('select count(*) c from '||owner||'.'||table_name)),'/ROWSET/ROW/C')) as count
from all_tables
where owner = 'SchemaName';

Hope it helps.

MSSQL: Find out total number of records of all tables

An efficient method to find out the total record counts of all tables in a MSSQL database.
SELECT tbl.name, CAST(p.rows AS int) 'count', tbl.schema_id, SCHEMA_NAME(tbl.schema_id) schema_name
FROM
  sys.tables AS tbl
  INNER JOIN sys.indexes AS idx ON idx.object_id = tbl.object_id AND idx.index_id < 2
  INNER JOIN sys.partitions AS p ON p.object_id = CAST(tbl.object_id AS int) AND p.index_id = idx.index_id
--WHERE ((SCHEMA_NAME(tbl.schema_id) = 'dbo'))
ORDER BY 2 DESC

Hope it helps.

Saturday, February 25, 2023

LTA's Official MRT Map 2023

The below is LTA's official MRT map that includes both current and future train network.



Friday, October 28, 2022

LTA's Official MRT Map 2022

The below is LTA's official MRT map that includes both current and future train network.



Sunday, August 14, 2022

Singapore Bus - Privacy Policy

Terms Of Use

By downloading or using the app, these terms will automatically apply to you – please read them carefully before using the app.

We are offering you this app to use for your own personal use without cost, but the app itself, and all trade marks, copyright, database rights and other intellectual property rights related to it, still belong to hongjun.sg. In particular, all content including images and videos in the app are the property of hongjun.sg and you may not reproduce such content in any form.

You should be aware that you cannot send it on to anyone else, and you’re not allowed to copy, translate or modify the app, any part of the app, or our trademarks in any way. You also may not attempt to extract the source code of the app.

We do not accept any liability for any injuries, damage or losses you may incur as a result of your use of the app.

Privacy Policy

What information does the Application obtain and how is it used?

User Provided Information

Nil

Automatically Collected Information

Nil

Does the Application collect precise real time location information of the device?

Nil

Do third parties see and/or have access to information obtained by the Application?

Nil

Singapore Bus - Bus Arrival [ Android App ]

Popular Posts