7 ms·

I once entered 'sudo echo hi" or something similar on a large HPCC and received an email back from a sysadmin that just said "hello".

1lint 3y ago
That's an amusing anecdote, though I find it bothersome the sysadmin failed to correctly implement the echo command
- deleted 3y ago
  [deleted]
- KyeRussell 3y ago
  Someone turned up the temperature hyperparameter.
- DonHopkins 3y ago
  I find it bothersome that the "yes" command outputs "y" by default instead of "yes". False advertising! Since Unix loves short concise command names, why not just name it "y"?
  - purpleidea 3y ago
    It does so you can pipe to commands that want a string of "press y/N" sort of things. If you want yes write `yes yes`. And one character commands are almost generally avoided. So don't name it "y".
    - kaba0 3y ago
      I think it was just a joke from parent, not a legitimate question.
    - DonHopkins 3y ago
      $ y not not not not not not not not not ...
ww520 3y ago
There's the talk command on Unix. We used to do a 'who' to find out who're on the system and 'talk' to them.
- tryauuum 3y ago
  also wall(1)
  - andrewSC 3y ago
    Also w(1)
  - KyeRussell 3y ago
    Nothing beats walling the undergrad project server.
  - DonHopkins 3y ago
    Then there was Jordan Hubbard's infamous "rwall incident" of March 31, 1987. It was waaaay more than just reported to the local sysadmin, and almost got UCB kicked off the ARPANET. https://en.wikipedia.org/wiki/Jordan_Hubbard#rwall_incident https://en.wikipedia.org/wiki/Jordan_Hubbard#rwall_incident https://news.ycombinator.com/item?id=31822138 https://news.ycombinator.com/item?id=31822138 Jordan Hubbard wrote: "One of the people who received my message was Dennis Perry, the Inspector General of the ARPAnet (in the Pentagon), and he wasn't exactly pleased. (I hear his Interleaf windows got scribbled on)" >Here's the explanation he sent to hackers_guild, and some replies from old net boys like Milo Medin (who said the program manager of the Arpanet in the Information Science and Technology Office of DARPA Dennis G. Perry said they would kick UCB off the Arpanet if it ever happened again), Mark Crispin (who presciently proposed cash rewards for discovering and disclosing security bugs), and Dennis G. Perry himself: (See https://www.ndia.org/events/2021/8/18/1341---swif-2021/speakers/milo-medin https://www.ndia.org/events/2021/8/18/1341---swif-2021/speak... if you don't know who Milo Medin is!) Milo S. Medin replied: >Actually, Dennis Perry is the head of DARPA/IPTO, not a pencil pusher in the IG's office. IPTO is the part of DARPA that deals with all CS issues (including funding for ARPANET, BSD, MACH, SDINET, etc...). Calling him part of the IG's office on the TCP/IP list probably didn't win you any favors. Coincidentally I was at a meeting at the Pentagon last Thursday that Dennis was at, along with Mike Corrigan (the man at DoD/OSD responsible for all of DDN), and a couple other such types discussing Internet management issues, when your little incident came up. Dennis was absolutely livid, and I recall him saying something about shutting off UCB's PSN ports if this happened again. There were also reports about the DCA management types really putting on the heat about turning on Mailbridge filtering now and not after the buttergates are deployed. I don't know if Mike St. Johns and company can hold them off much longer. Sigh... Mike Corrigan mentioned that this was the sort of thing that gets networks shut off. You really pissed off the wrong people with this move! >Dennis also called up some VP at SUN and demanded this hole be patched in the next release. People generally pay attention to such people. Jordan's infamous rwall incident is the kind of thing that might have triggered the rumored "explosive bolts" the Defense Communication Agency was once talking about installing, that would violently separate the MILNET and ARPANET in case of national emergency. https://news.ycombinator.com/item?id=34171294 https://news.ycombinator.com/item?id=34171294 >DCA must have the ability to partition the ARPANET and MILNET in case of an "emergency", and having non-DCA controlled paths between the nets prevents that. There was talk some time ago about putting explosive bolts in the mailbridges that would be triggered by destruct packets... That idea didn't get far though...

1lint 3y ago

That's an amusing anecdote, though I find it bothersome the sysadmin failed to correctly implement the echo command

deleted 3y ago
[deleted]
KyeRussell 3y ago
Someone turned up the temperature hyperparameter.
DonHopkins 3y ago
I find it bothersome that the "yes" command outputs "y" by default instead of "yes". False advertising! Since Unix loves short concise command names, why not just name it "y"?
- purpleidea 3y ago
  It does so you can pipe to commands that want a string of "press y/N" sort of things. If you want yes write `yes yes`. And one character commands are almost generally avoided. So don't name it "y".
  - kaba0 3y ago
    I think it was just a joke from parent, not a legitimate question.
  - DonHopkins 3y ago
    $ y not not not not not not not not not ...

ww520 3y ago

There's the talk command on Unix. We used to do a 'who' to find out who're on the system and 'talk' to them.

tryauuum 3y ago
also wall(1)
- andrewSC 3y ago
  Also w(1)
- KyeRussell 3y ago
  Nothing beats walling the undergrad project server.
- DonHopkins 3y ago
  Then there was Jordan Hubbard's infamous "rwall incident" of March 31, 1987. It was waaaay more than just reported to the local sysadmin, and almost got UCB kicked off the ARPANET. https://en.wikipedia.org/wiki/Jordan_Hubbard#rwall_incident https://en.wikipedia.org/wiki/Jordan_Hubbard#rwall_incident https://news.ycombinator.com/item?id=31822138 https://news.ycombinator.com/item?id=31822138 Jordan Hubbard wrote: "One of the people who received my message was Dennis Perry, the Inspector General of the ARPAnet (in the Pentagon), and he wasn't exactly pleased. (I hear his Interleaf windows got scribbled on)" >Here's the explanation he sent to hackers_guild, and some replies from old net boys like Milo Medin (who said the program manager of the Arpanet in the Information Science and Technology Office of DARPA Dennis G. Perry said they would kick UCB off the Arpanet if it ever happened again), Mark Crispin (who presciently proposed cash rewards for discovering and disclosing security bugs), and Dennis G. Perry himself: (See https://www.ndia.org/events/2021/8/18/1341---swif-2021/speakers/milo-medin https://www.ndia.org/events/2021/8/18/1341---swif-2021/speak... if you don't know who Milo Medin is!) Milo S. Medin replied: >Actually, Dennis Perry is the head of DARPA/IPTO, not a pencil pusher in the IG's office. IPTO is the part of DARPA that deals with all CS issues (including funding for ARPANET, BSD, MACH, SDINET, etc...). Calling him part of the IG's office on the TCP/IP list probably didn't win you any favors. Coincidentally I was at a meeting at the Pentagon last Thursday that Dennis was at, along with Mike Corrigan (the man at DoD/OSD responsible for all of DDN), and a couple other such types discussing Internet management issues, when your little incident came up. Dennis was absolutely livid, and I recall him saying something about shutting off UCB's PSN ports if this happened again. There were also reports about the DCA management types really putting on the heat about turning on Mailbridge filtering now and not after the buttergates are deployed. I don't know if Mike St. Johns and company can hold them off much longer. Sigh... Mike Corrigan mentioned that this was the sort of thing that gets networks shut off. You really pissed off the wrong people with this move! >Dennis also called up some VP at SUN and demanded this hole be patched in the next release. People generally pay attention to such people. Jordan's infamous rwall incident is the kind of thing that might have triggered the rumored "explosive bolts" the Defense Communication Agency was once talking about installing, that would violently separate the MILNET and ARPANET in case of national emergency. https://news.ycombinator.com/item?id=34171294 https://news.ycombinator.com/item?id=34171294 >DCA must have the ability to partition the ARPANET and MILNET in case of an "emergency", and having non-DCA controlled paths between the nets prevents that. There was talk some time ago about putting explosive bolts in the mailbridges that would be triggered by destruct packets... That idea didn't get far though...