"Bash" stands for "Bourne Again SHell," and it is a command processor that typically runs in a text window where the user types commands that cause actions.
echo: In computing, echo is a command that outputs the strings that are passed to it as arguments.
export: The export command is a built-in utility of Linux Bash shell. It is used to ensure the environment variables and functions to be passed to child processes. It does not affect the existing environment variable.
eval: The eval command concatenates the arguments into a single string, parses the string as a shell command line, and executes it.
curl: a command-line tool and library for making HTTP requests. The name "curl" stands for "Client for URLs". It is widely used to interact with web services, download files, and perform various other HTTP-related tasks from the command line or scripts.
bash: This is the Bash shell. It is used to execute the commands contained in the script file.
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