lang:bash:interactive

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About

An interactive shell is 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

Articles Related

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