Search Results

That is possible. I can't remember all the type checking details used in those days either. One way Bash (nowadays) distinguises between a variable named 'func' and a function named 'func()' is the...

Without any comments from the programmer stating the intent of the code, it's impossible to tell.


Depending on your command shell, it's usually something like this:
-bash-4.1$ command arg1 arg2...

One thing Bourne based shells and csh based shells share is that $? is the exit code of the previous command. But, we're talking about a UNIX Version 6 shell here; not a modern shell. I never used...

Part of an if statement can be to call (fork) an external function; e.g. sed. You could say a == (the results of) sed /something/ for example. ccode is just the name of a variable. Judging by the...

If you look closely, I think you'll find that that is "if { command }" (with no expr); the exit status of command, in this case, is the expression.

ongoto already explained most of what is going...

The more I think about it, the less sure I am about that. As K&R C treats pretty much all functions as variable-argument, how could the compiler know what you meant? There's no way for a compiler...

I meant no offense.
I'm just going along with what you said. The questions you raised supports the fact that it doesn't make any sense, right?

if (exp()) is asking if the function exists; it's...

The source code is old K&R C, without function declarations.

Don't write code like that, and don't ever modify old K&R C by adding function declarations - unless you like getting into the...

@4: If goto was a built-in in the shell, the shell might be able to find the labels in the script it was executing (and would be able to handle goto in an interactive shell) instead of needing to...

@1: By typing commands on the command line and executing them by using "enter".
@2: The man pages does not seem to specify whether or not spaces can be used, but I would just control the urge to use...

You can find a man page for : in the Man Pages section on this forum here: colon(1P) (https://www.unix.com/man-page/posix/1/colon/)

This seems to me is referring to the historical Thompson shell (http://v6shell.org/man/osh.1.html) (Its successor Bourne Shell in UNIX v7 did not have a goto...)

1.
I think it means that you...

The Thompson goto command was bizarre because it was not a shell built-in. It was actually an external command. Decisions like this were made to get the thing to run in a 16 bit machine.

First...