This post contains short tables of commonly used items in this shell. In most cases, the information applies to both the Bourne shell (sh) and the newer bash shell. The best resource for understanding existing shell scripts is explainshell You can learn shell scripting interactively online. Good practices: #!/bin/bash #Explicitly tell Read more…
In a previous post, I explained Why Python is the best development language. As a python programmer, you may need to use various packages to deliver your solutions. These packages might not be all compatible with each other. This is a problem if you were to install all packages in Read more…
I’ve shared with you Why everyone needs to be a programmer, and that I strongly believe that those that have some “programming” skills will have an advantage in life over those that do not. I also shared Why Linux is the best development environment. I’m here to tell you Why Read more…
In my previous post, I explaind Understanding the Linux Command Line. The following are what I consider essential command line tools. Essential Command Line Tools jq – it’s sed for json files Essential Programing Tools Ubuntu 16.04 and 18.04 comes with Python 2.7 installed. You may want to install python3. npm Read more…
In my previous post, I explained How to create a Linux development environment on Windows 10. The shell prompt (or command line) is where one types commands in. When accessing the system through a text-based terminal, the shell is the main way of accessing programs and doing work on the Read more…
In my previous post, I explained Why Linux is the best development environment Historically there were 3 ways to build a Linux development environment: your personal computer (local machine) computer in the cloud (cloud server) virtual machine (VM) on your personal computer As of 2016 Microsoft lets developers run Linux Read more…
I’ve shared with you Why everyone needs to be a programmer, and that The Cut and Paste programmer is not bad. I’m here to tell you Why Linux is the best development environment. Linux is Quick You can create a Linux development environment in minutes. Essential Linux command line tools Read more…
The reality is there are many more programmers in the world than you realize and if you don’t have some programming skills you’ll be left behind. It’s the same reason why I tell my clients as of 2018 there are no technology companies, just organizations that leverage technology or those Read more…
grep is used to search for PATTERN in each FILE or standard input. PATTERN is, by default, a basic regular expression (BRE). Example: grep -i ‘hello world’ menu.h main.c Usage: grep [OPTION]… PATTERN [FILE]… Regexp selection and interpretation: -E, –extended-regexp PATTERN is an extended regular expression (ERE) -F, –fixed-strings PATTERN Read more…
sed (stream editor) is a Unix utility that parses and transforms text, using a simple, compact programming language. $ sed -i ‘s/cat/dog/’ file.txt # this will replace any occurrence of the characters ‘cat’ by ‘dog’ Usage: sed [OPTION]… {script-only-if-no-other-script} [input-file]… -n, –quiet, –silent suppress automatic printing of pattern space -e Read more…