Bash/What-is-an-Interactive-Shell 003f
From Get docs
Next: Is this Shell Interactive?, Up: Interactive Shells [Contents][Index]
6.3.1 What is an Interactive Shell?
An interactive shell
is one started without non-option arguments, unless -s
is
specified, without specifying the -c
option, and
whose input and error output are both
connected to terminals (as determined by isatty(3)
),
or one started with the -i
option.
An interactive shell generally reads from and writes to a user’s terminal.
The -s
invocation option may be used to set the positional parameters
when an interactive shell is started.