Very Computer

Hi,

Consider the paste command.

paste requires input_file_name.

Using the command line
        paste `tty`
we can enter data from standard input.

Is there any other way to do it? (I would like to use pipe with paste).

        Thanks in advance,
        Alex

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Quote:> Hi,

> Consider the paste command.

> paste requires input_file_name.

> Using the command line
>    paste `tty`
> we can enter data from standard input.

> Is there any other way to do it? (I would like to use pipe with
paste).

I don't follow.
Are you asking whether there's another way to read standard input from
the shell? (and maybe stick in a variable or pipe it to another tool?)
Can you use 'read' (man (0)sh) for that?

This seems too simple...I must not be following your question.

Cheers,
Dave

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|Using the command line
|       paste `tty`
|we can enter data from standard input.
|
|Is there any other way to do it? (I would like to use pipe with paste).

foo | paste -

It's in the man page (assuming GNU paste, since you don't say which
version),

                        Pete
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1.      The way you have it written, you won't get standard input.
        You will get one line which is the device name for your
        terminal. You really ought to try your examples before writing
        them.

2.      The man page for paste quite clearly tells you how to get
        standard input. I leave it as an exercise for you to read
        same.

3.      It occurs to me that this might be a homework question, in
        which case [2] is even more relevant.

4.      Always read the man page first. The man pages are your friend.

I see no reason why

Quote:>>         paste `tty`

should not work, in fact I just tried it successfully.
Could you explain?

tobias

Always RTFM.

  The example was tested before posting the message.

Quote:

> I see no reason why
> >>         paste `tty`
> should not work, in fact I just tried it successfully.

 Also I have got the same reults. I does work.

Quote:> Could you explain?

  Also I would like to get any explanation:
  1. Why must not it work?
  2. Why does it work?

Quote:

> tobias

> Always RTFM.

        Thanks in advance,
        Alex

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After re-thinking it came clear to me that in fact
        paste `tty`
will not read from standard input, but from your
terminal. So e.g.
        paste `tty` < file
will fail.

Quote:>  2. Why does it work?

The way it works is:
'tty' give you the filename of your terminal.
the backticks (`) are a shell special for "replace
with output of enclosed command". So
        paste `tty`
invokes 'paste' with your tty name as single argument.

Bye,
tobias

The `tty` command gets evaluated before the redirections occur.

                --Ken Pizzini