3 Ways to Append to list in Python
List in Python are indexed and have a definite count while initializing. The elements in a list are indexed according to a definite sequence and the indexing of a list is done with 0 being the first index and the…
Daniel Cao
2 Ways to Fix SSL_ERROR_RX_RECORD_TOO_LONG
The error “SSL_ERROR_RX_RECORD_TOO_LONG” usually is a wrong configuration on the server-side. This usually means the implementation of SSL on an external server is not correct. The error is usually caused by a server-side problem which the server administrator will need…
2 ways to fix x509 certificate routines:X509_check_private_key:key values mismatch
For SSL key values mismatch issue, there are two main reasons. Error message about X509_check_private_key:key values mismatch root@s17925268:~# service nginx restart Restarting nginx: nginx: [emerg] SSL_CTX_use_PrivateKey_file(“/etc/nginx/conf.d/ssl/ssl.key”) failed (SSL: error:0B080074:x509 certificate routines:X509_check_private_key:key values mismatch) nginx: configuration file test failed Failed…
Bruce Lee Biography – Life Story and Amazing Facts
Bruce Lee, Chinese-American actor, legendary martial-art expert, and film director Lee Jun-fan, best known worldwide as Bruce Lee, was born to Lee Hoi Chuen, a Cantonese opera singer from Hong Kong and his wife Grace Ho, on November 27, 1940,…
Python 3 String Operations
lower(): Converts a string to the lowercase letter. upper(): Converts a string to the uppercase letter. islower() / isupper(): Checks if the whole string is in lower case or upper case and returns bool value respectively. startswith(): Returns a bool…
3 Examples of List Append Method in Python3
List in Python are indexed and have a definite count while initializing. The elements in a list are indexed according to a definite sequence and the indexing of a list is done with 0 being the first index and the…
2 Ways to Check DNS server response time
DNS is a system by which a browser or other software converts a domain name to a IP4 or IP6 address. Each time we access a website the browser needs to convert the domain name to a IP4/IP6 address using…
4 Ways to Check OS Version in Linux
The OS version of a Linux distribution can be determined by using the command-line interface as well as a graphical user interface. In Linux, CLI is preferred over GUI as it provides more control over the OS. In this article,…
3 Ways to Fix Too Many Open Files
When the “Too Many Open Files” error message is written to the logs, it indicates that all available file handles for the process have been used (this includes sockets as well). In a majority of cases, this is the result…
Understanding Linux Ulimit Command with Examples
Most UNIX-like operating systems, including Linux and macOS, provide ways to limit and control the usage of system resources such as threads, files, and network connections on a per-process and per-user basis. These “ulimits” prevent single users from using too…