How to Write to File in Bash

How to Write to File in Bash?

Several methods are discussed to write to a file in bash, which helps to write single or multiple lines and the same content to multiple files simultaneously.

Bash Heredoc Explained

Bash Heredoc | Explained

We can use the Bash heredoc method in Linux to execute multiple lines of commands and data simultaneously, which is explained in this guide with examples.

Bash until Loop Explained

Bash until Loop | Explained

In Bash, the until loop iterates the code until the specified condition is met. Using the until loop, users can modify conditions according to requirements.

Bash Select (Make Menus)

Bash Select (Make Menus) | Explained

Easily create interactive menus in Linux using “bash select”. Allow users to choose from a list of options and navigate your command-line program or script.

Bash Shebang Explained

Bash Shebang | Explained

The “bash” shebang is a first-line interpreter used to execute the “bash” scripts. It starts with “#!” symbols and the absolute path to a binary file.

Bash exit command and exit codes

Bash Exit Command and Exit Codes

The bash exit command quits the terminal or script and shows a specific exit code based on the command execution that can be used for conditional exiting.

Bash Break and Continue

Bash Break and Continue

Learn more about the usage of ‘break’ and ‘continue’ in bash scripting and control the flow of a loop by terminating and skipping the code.

Bash Append to File

How to Append to File in Bash?

Three methods are used to append the data to the bash file in Linux, which are the redirect operator (>>), cat, and tee commands, as discussed in this guide.

Bash while loop

Bash while Loop | Explained

Learn how to use the bash while loop to execute a set of commands repeatedly until a specified condition is met. It can help you automate your tasks.

Bash arrays

Bash Arrays | Explained

Bash arrays are used to store several types of data information, which can be used to perform desired operations in Linux, as discussed in this article.

Bash functions explained

Bash Functions | Explained

Bash functions in Linux are used with local & global variables. Arguments can be passed, or user input can be taken to make the functions interactive.

Bash Loops Explained

Bash Loops | Explained

Bash loops are an essential part of any programming language as they will automate repetitive tasks to save time and minimize the lines of code.

bash if else with examples

bash if else With Examples

The bash if-else statement will let you decide certain aspects of code that you want to execute and others that you want to ignore.

How to create bash aliases

How to Create Bash Aliases?

The bash aliases are created by adding the alias into the ~/.bashrc file or creating a separate aliases file and adding its reference to the ~/.bashrc file.

Bash concatenate Strings

How to Concatenate Strings in Bash?

To concatenate bash strings, you can use strings together ($Str1$Str2), use curly braces (${Str1}${Str2}), and use the += operator (Str1+=”$Str2”).

How to compare strings in bash

How to Compare Strings in Bash

Comparison operators like the equality (= or ==), the not equality (!=), an empty string (z), and a non-empty string (n) are used to compare strings in bash.

Bash wait command

Bash wait Command | Explained

The wait command in the Linux bash scripts waits for the previous commands to complete execution for a specific PID, for the first PID only, and all the PIDs.

Bash read Command

Bash read Command | Explained

The read command reads the standard input and executes the commands with arguments as a prompt, reads array values, and sets the characters & time limit.

~/.bash_profile | Explained

In Linux, “.bash_profile” is the hidden file created in the home directory. This file is used to customize the user configuration environment.

Bash Case Statement

Bash Case Statement | Explained

The Bash case statement checks the multiple input values against the set cases. It executes the correct statement and quits the case statement.

How to Increment a Variable in Bash

How to Increment a Variable in Bash?

In Linux, the “+”, “+=”, “Prefix”, and “Postfix” operators are used to increment a variable in bash. The bash can be executed as “bash ”.

How to check if a file exists in bash

How to Check if a File Exists in Bash?

Three different methods are used to check if a file exists in bash, which are executed using the “test EXPRESSION”, [EXPRESSION], and [[EXPRESSION]] commands.

Replacing String in Bash

Replacing String in Bash

Two methods are used to replace a string in bash/shell script that is using the “sed” command or the “native substring {EXPRESSION}” in Linux