Question

The .bat equivalent is:

:one
<<run program>>
goto :two

:two
<<run program>>
goto :one

end

Can a .sh do this?

Answer 1

There’s actually no exact replacement. In bash programming, you can define functions, so you might do something like

one() {
    # Some stuff
    two
}

two() {
    # Some more stuff
    one
}

Although eventually that’ll run out of stack space; hopefully there’s some circumstances under which you’ll include code to stop the recursion. I realize this is just a straw man example, but bash would let you use other forms of loops here which would work better; for example:

while true
do
    # Some stuff
    # Some more stuff
done