Category Archive for "Shell"

When to wrap quotes around a shell variable?

In shell scripting, there is a concept of wrapping quotes around variables. It is often a point of confusion for beginners as to when and why they should use quotes a...

Difference between single and double quotes in Bash

Bash is a popular shell scripting language used primarily in Linux and Unix systems. When writing scripts or working in the command line environment, it's important to understand t...

How to Execute a Program or Call a System Command in Python

Executing a program or calling a system command is a common task in Python, especially when you need to interact with the operating system or run external scripts. There are severa...

How do I use shell variables in an awk script?

If you are working with shell scripting and need to use shell variables in an awk script, you may have encountered some confusion regarding how to correctly pass these variables....

Difference between sh and Bash

When writing shell programs, we often use /bin/sh and /bin/bash. Many people are confused about the difference between these two. In this article, we will discuss the...