Bash - Interactive Shell

About

An Interactive shell ¹⁾ is created when bash is:

• started:
  • without non-option arguments
  • without the -c option
  • whose standard input and error are both connected to terminals (as determined by isatty(3)),
• or started with the -i option. PS1 is set and $- includes i if bash is interactive, allowing a shell script or a startup file to test this state. See testing_for_interactive_mode

Management

Argument

When invoking an interactive shell, you can set the positional parameters with the -s option of bash. See Bash - Bash cli

Testing for Interactive mode

• Testing for Interactive mode

if [[ $- == *i* ]]
then
    echo "Interactive"
fi

where

• - is a special parameter representing the option of the shell