Pseudo-terminal will not be allocated because stdin is not a terminal

📝 Title: Troubleshooting the "Pseudo-terminal will not be allocated" Error in Shell Scripts

Are you trying to create directories on a remote server and use SCP to copy files, but facing the frustrating "Pseudo-terminal will not be allocated because stdin is not a terminal" error? 🤔 Don't worry, we've got you covered! In this blog post, we'll address this common issue, provide simple solutions, and help you get your script up and running smoothly. Let's dive in! 💻💨

Understanding the Issue

When executing your script, you encountered the puzzling message: "Pseudo-terminal will not be allocated because stdin is not a terminal." This error usually occurs when attempting to run commands that expect an interactive terminal session, but the standard input is not connected to a terminal.

In your case, the SSH command within your script is trying to allocate a pseudo-terminal, but it fails due to a lack of terminal input.

Causes of the Error

There are a few common causes for this error. Let's take a look at them:

1️⃣ Running Script Non-Interactively: If the script is being executed non-interactively, such as from a cron job or as part of an automated process, it may not have a terminal connected to it.

2️⃣ SSH Forced Pseudo-Terminal: The -t option used in the ssh command forces the allocation of a pseudo-terminal. If your remote server does not allow the allocation of a pseudo-terminal when executing commands, this error can occur.

Solutions to the Error

Now that we understand the causes, let's explore some solutions to this "Pseudo-terminal will not be allocated" error:

1️⃣ Remove the -t Option: If your script does not require an interactive terminal session, you can simply remove the -t option from the ssh command. This allows the script to run without attempting to allocate a pseudo-terminal.

ssh user@server<<EOT
# Your commands here
EOT

2️⃣ Disable Pseudo-Terminal Allocation in SSH Config: If removing the -t option is not an option, you can disable pseudo-terminal allocation in the SSH configuration file on the remote server.

• Connect to the remote server using SSH.

• Open the SSH configurat