ZMODEM

#1

Post by turrini » Sat, Oct 22, 2016, 2:04 PM UTC

ZMODEM
en.wikipedia.org

Re: ZMODEM

#2

Post by Clubber » Sat, Oct 22, 2016, 4:01 PM UTC

We used this in the BBS days.

Re: ZMODEM

#3

Post by anexprogrammer » Sat, Oct 22, 2016, 4:03 PM UTC

> Introduced 1986; 30 years ago

Now I feel old. I remember when this was new and clever. Made downloading from BBS's much nicer over XModem. At 2400 baud or whatever was current then!

Re: ZMODEM

#4

Post by revelation » Sat, Oct 22, 2016, 4:04 PM UTC

Clubber wrote: post #2

We used this in the BBS days.

Still use this today, it's what you do with an embedded device when all you have is a serial line and need to get files on/off.

Slow as hell though, but then I didn't grow up with this stuff.

Re: ZMODEM

#5

Post by pmoriarty » Sat, Oct 22, 2016, 4:08 PM UTC

revelation wrote: post #4

Clubber wrote: post #2

We used this in the BBS days.

Still use this today, it's what you do with an embedded device when all you have is a serial line and need to get files on/off. Slow as hell though, but then I didn't grow up with this stuff.

Screen[1] contains an implementation of zmodem (and is one of screen's advantages over tmux). I've used it before on VMs on which I had a serial console but no network connection or other way to get/put files.

[1] - https://www.gnu.org/software/screen/

Re: ZMODEM

#6

Post by RRRA » Sat, Oct 22, 2016, 4:16 PM UTC

Have a look at zssh.

... and shoutout to the 514 ;-)

Re: ZMODEM

#7

Post by robmiller » Sat, Oct 22, 2016, 4:18 PM UTC

I was a little kid connecting to the US gov list of 800 number BBSes and always had fun choosing Kermit as my protocol, but ZModem was much faster!

Re: ZMODEM

#8

Post by tonyarkles » Sat, Oct 22, 2016, 4:19 PM UTC

revelation wrote: post #4

Clubber wrote: post #2

We used this in the BBS days.

Still use this today, it's what you do with an embedded device when all you have is a serial line and need to get files on/off. Slow as hell though, but then I didn't grow up with this stuff.

Yup! It's only once every year or two that I've needed it, but damn is it a handy thing to have in your back pocket when nothing else works.

Last time I needed it, I also ended up using xxd to get the zmodem binary on to the device. Fun times, fun times. The device was buried in a concrete box under a frozen highway, and the Ethernet died, so we had to find a way...

Re: ZMODEM

#9

Post by tyingq » Sat, Oct 22, 2016, 4:20 PM UTC

Kermit was in the same space as Zmodem. I remember it fondly, as they were very progressive around "open source" way back in the early 90's, and probably earlier. They accepted what was essentially a "pull request" over USENET discussions forums from me to add a feature.

http://www.kermitproject.org/ckfaq.html

Re: ZMODEM

#10

Post by boie0025 » Sat, Oct 22, 2016, 4:30 PM UTC

Clubber wrote: post #2

We used this in the BBS days.

Yes, Seeing the "ZMODEM" on the front page triggered some nostalgia... waiting for hours to download a few megabytes. At least ZMODEM supported resume!