[Info-vax] CLI editing, was: Re: VMS - Virtual Terminals - A security risk way back yonder OR was that an Old Wives Tale ?

[William Pechter]

In article <n9r4hi$vji$2 at Iltempo.Update.UU.SE>,
Johnny Billquist  <bqt at softjar.se> wrote:
>On 2016-02-15 00:31, William Pechter wrote:
>> In article <n9qnd4$602$1 at Iltempo.Update.UU.SE>,
>> Johnny Billquist  <bqt at softjar.se> wrote:
>>> On 2016-02-14 19:42, lists at openmailbox.org wrote:
>>>> I know Johnny loves to argue so here's an example of UNIX with a statically
>>>> linked shell. Read it and weep, babe.
>>>
>>> Oh, I love to argue. No denying that. I just have this inability to keep
>>> quiet when I see something I think is wrong. :-)
>>>
>>> By the way, I can build static binaries all day long. It's not hard. But
>>> I still find the concept of a "default" shell a bit weird. I've never
>>> seen problems using whatever shell I personally prefer, no matter what
>>> shells were already installed or not, and they have never been in the
>>> way of installing whatever other software needed, so I find the claim
>>> that you stick to bash in Linux because of some problem just super weird.
>>>
>>> 	Johnny
>>>
>>> --
>>> Johnny Billquist                  || "I'm on a bus
>>>                                    ||  on a psychedelic trip
>>> email: bqt at softjar.se             ||  Reading murder books
>>> pdp is alive!                     ||  tryin' to stay hip" - B. Idol
>>
>> Try changing the root user's default shell on a 1985-95 version of Unix
>> and see if the thing will be able to even boot correctly.
>
>BSD systems normally had csh as the shell for root back then. I hope you 
>remember that. :-)
>
>> In the early days before #! /bin/sh was in common use the only way
>> the C shell scripts were often differentiated was by a : as the top line
>> and a hack that had those run by csh instead of sh.
>
>We're going fast down memory lane here... But I think you might need to 
>go further back than mid 80s. :-)
>

Oh no, my Unix experience started with BSD 4.x and SystemV and I went
backwards into a SysIII box on 68k in my house.

I'll keep to what I have really experienced as a sysadmin -- not V7 or V6
under SimH or E11...  

I know what I know well and what I really don't.

I remember seeing the : back in the SysIII days on Uniplus and Uniplus
SysV and was amazed at how much beter #!/bin/xxx was as a generic mechanism.




>	Johnny
>
>-- 
>Johnny Billquist                  || "I'm on a bus
>                                   ||  on a psychedelic trip
>email: bqt at softjar.se             ||  Reading murder books
>pdp is alive!                     ||  tryin' to stay hip" - B. Idol

Bill
-- 
-- 
Digital had it then.  Don't you wish you could buy it now!
pechter-at-gmail.com  http://xkcd.com/705/