What is the value of the PS1 variable?

What is the value of the PS1 variable?

PS1: environment variable which contains the value of the default prompt. It changes the shell command prompt appearance and environment. PS2: environment variable which contains the value the prompt used for a command continuation interpretation. You see it when you write a long command in many lines.

What does PS1 stand for in shell script?

You can even run shell scripts inside PS1 variable, where PS stands for the prompt statement. I am going to show some examples of changing the Linux environment using variable PS1.

What is the value of the PS3 variable in Bash?

PS3: environment variable which contains the value of the prompt for the select operator inside the shell script. PS4: environment variable which contains the value of the prompt used to show script lines during the execution of a bash script in debug mode.

When do I use the PS4 prompt variable?

PS4 – Prompt used when a shell script is executed in debug mode (“set-x” will turn this on) default =”++” PROMPT_COMMAND – If this variable is set and has a non-null value, then it will be executed just before the PS1 variable.

How to update prompt PS1 in bash scripts?

I would like to update the bash prompt inside a script. Essentially, I have to use a VPN to remotely work on another computer and would like it to get reflected by the bash prompt.

How to execute Linux command in PS1 environment variable?

In the PS1 environment variable, you can directly execute any Linux command, by specifying in the format $ (linux_command). In the following example, the command $ (date) is executed to display the current time inside the prompt. You can also use to display the current time in the hh:mm:ss format as shown below:

How to set the environment variable in PS1?

I have two ps1 scripts in Github Actions. My scenario: The second script executes after build. I need to set the value inside the first script and use it inside the second script. So I decided to use BUILD_NUMBER environment variable and set it to 10 as a default value.