This might be really basic question but I want to understand it thoroughly.

1. What is a pseudo terminal? (tty/pty)
2. Why do we need them? How they got introduced and what was the need for it?
3. Are they outdated? Do we not need them anymore? Is there anything that replaced them?
4. Any useful use-case?

What I did:

1. Read man pages - got some info but not exact picture.
2. Tried to read on them from Network programming by Richard Stevens. - Got some info but not the why? part.

This might be really basic question but I want to understand it thoroughly.

1. What is a pseudo terminal? (tty/pty)
2. Why do we need them? How they got introduced and what was the need for it?
3. Are they outdated? Do we not need them anymore? Is there anything that replaced them?
4. Any useful use-case?

What I did:

1. Read man pages - got some info but not the exact picture.
2. Tried to read on them from Unix Network Programming by Richard Stevens. Got some info but not the why? part.

This might be really basic question but I want to understand it thoroughly.

1. What is a pseudo terminal? (tty/pty)
2. Why do we need them? How they got introduced and what was the need for it?
3. Are they outdated? Do we not need them anymore? Is there anything that replaced them?
4. Any useful use-case?

What I did:

1. Read man pages - got some info but not exact picture.
2. Tried to read on them from Network programming by Richard Stevens. - Got some info but not the why? part.

Any help/pointer is greatly appreciated.

This might be really basic question but I want to understand it thoroughly.

1. What is a pseudo terminal? (tty/pty)
2. Why do we need them? How they got introduced and what was the need for it?
3. Are they outdated? Do we not need them anymore? Is there anything that replaced them?
4. Any useful use-case?

What I did:

1. Read man pages - got some info but not exact picture.
2. Tried to read on them from Network programming by Richard Stevens. - Got some info but not the why? part.