How to exit VIM – VI Editor
How to exit VIM or VI editor. VIM stands for Vi IMproved. As in a better editor than VI. You can start Vim at any terminal or in a SSH session on Linux with this command: Same goes for vi commands, opens a file the same way. Once vim / vi is opened you are…
Linux commands cheat sheet the most used list
Most useful Linux commands for daily # Display how long has the system been running – since tle last restart. # List directory contents # List files in directory but better attributes and human-readable # List files in directory sorted by file date/time. # Change directory # Wildcards When filtering for files or directories you…
How to parse and read XML log files CLI Linux
How to parse and read XML log files in CLI Linux – multiple files with multiple tags. Applications can log as xml and you might need to read those log files.These files can be later processed by a log aggregator application. A simple command to monitor the latest entries in your logs across multiple files.You…
Find top visiting ip with Awk
Find top visiting ip with AwkHow to find top visiting ip with Awk list in apache logs in CLI Linux. You can use the Awk programming language to extract the field you need from the Apache / Httpd access logs.Then you can chain multiple commands to have the desired output.You can also modify this to…
How to learn Python as a second language
How to learn Python as a second language. After watching and reading few tutorials you still can’t say that you know much Python and that’s probably true. How I try to learn it, still work in progress, is to use a project-based approach. Learn the basics of the language. 1. No semicolons; 2. Indentation matters…
Random Password generator in Python
Random Password generator in Python How I wrote a random secure password generator in Python in 30 min. What I needed was a small script that I execute and generate a random password that is then copied to the clipboard and all I had to do was paste it Ctrl+V to use it. Every time…
Windows 11 nag screen after update
Windows 11 nag screens after update.How to avoid the Windows 11 beta nag screen after updating. Windows 10 also had a nag scren afte updates were applied but on Windows 10 you could say remind me later and it would not bother you until the next major udate. Enter Windows 11, the remind me later…
155. Min Stack
155. Min Stack Solution programming interview question. Design a stack that can return the minimum element in constant time and also support pus, pop and top methods. Example:Input[“MinStack”,”push: -3″,”push: 0″,”push: -5″,”getMin”,”pop”,”top”,”getMin”] OutputMinStack minStack = new MinStack();minStack.push(-3); // returns nullminStack.push(0); // returns nullminStack.push(-5); // returns nullminStack.getMin(); // return -5minStack.pop(); // returns nullminStack.top(); // return 0minStack.getMin(); //…
20. Valid Parentheses Leetcode Solution
Valid Parentheses Leetcode 20 Solution Return boolean indicating wether the pairs of paranthesis are matching and there are no un-matched paranthesis found. Using a list to implement a stack in Python.Store all the pairs of opening and closing tags in a dictionary. Closing brackets are the key.Go thru the characters of the string and add…
66. Plus One LeetCode Solution in Python
Plus One LeetCode Solution in Python 3. Given a non empty array of decimal digits representing a non-begative integer.Increment the integer, most significant digit is on the left. Each element contains a single digit.No leading zeros except for the number 0. Examples Input: digits = [1,2,3] Output: [1,2,4] Input array represents the int 123 +…
