Go to advanced search

by CecilWard
Mon Mar 19, 2018 3:24 am
Forum: Beginners
Topic: Opportunities for network performance acceleration or enhancement in internet connection
Replies: 2
Views: 234

Opportunities for network performance acceleration or enhancement in internet connection

My vague and confused question is about the feasibility of setting up a remote (hosted) pi to somehow boost the throughput or responsiveness of my slow DSL internet connection. My question: Are there networking performance boosting opportunities that can be obtained by using a small server on such a...
by CecilWard
Fri Jan 05, 2018 11:58 pm
Forum: Beginners
Topic: Maximum size of boot drive
Replies: 3
Views: 361

Re: Maximum size of boot drive

Many thanks!

What is the good file system i should be using for performance and reliability given that I have to be able to boot off that same drive? (I'm a retired asm and C r+d programmer, long experience with NT and before that VAX/VMS but totally ignorant about *nix)
by CecilWard
Fri Jan 05, 2018 10:25 pm
Forum: Beginners
Topic: Maximum size of boot drive
Replies: 3
Views: 361

Maximum size of boot drive

I'm looking at buying something like this as a boot drive for my Raspberry Pi 3 http://www.amazon.co.uk/dp/B06XFHQGB9/_encoding=UTF8?coliid=I2WR95S7WABM9W&colid=1NKM82F39L7B&psc=0 Will it work? Someone suggested there might be a problem with it being too large, which good file system can I get on it...
by CecilWard
Sun Sep 17, 2017 11:48 am
Forum: Beginners
Topic: Old apt-get packages
Replies: 9
Views: 901

Re: Old apt-get packages

I saw that a raspberry pi hosting outfit based in Arizona not only host pis but they also have some other (alpha setup) hardware on offer that has aarch64 processors and a proper 64-bit o/s for it that works. It's some evaluation development board that they will host, which contains some 8-core ARM ...
by CecilWard
Sun Sep 17, 2017 4:28 am
Forum: Beginners
Topic: Old apt-get packages
Replies: 9
Views: 901

Re: Old apt-get packages

Actually recompiling stuff from source would be an excellent idea as in some cases I could use newer (e.g. C, C++ etc )compilers, with better optimisation abilities and possibly find more aggressive (or more effective) optimisation switches in order to get higher performance resulting exes.
by CecilWard
Sun Sep 17, 2017 4:25 am
Forum: Beginners
Topic: Old apt-get packages
Replies: 9
Views: 901

Re: Old apt-get packages

I could get source code and compile / make it myself if I had any idea which directories the results were supposed to be placed in, plus details,of other things like environment variables required. That's not a problem as I am a professional asm + C programmer, yet, amazingly, have never used unix b...
by CecilWard
Sun Sep 17, 2017 4:13 am
Forum: Beginners
Topic: Old apt-get packages
Replies: 9
Views: 901

Re: Old apt-get packages

I should have spilt off that last post as a different topic, for greater visibility.

And is upgrading to stretch something that requires a bare-metal installation?
by CecilWard
Sun Sep 17, 2017 4:11 am
Forum: Beginners
Topic: Old apt-get packages
Replies: 9
Views: 901

Re: Old apt-get packages

A couple of questions following on from that very useful reply: Is it possible to do an upgrade install to arch Linux from within Linux - sounds impossible? Mind you, since I really need to move everything to a decent reliable fast larger micro (is it?) SD card for the pi3, not continuing the mistak...
by CecilWard
Sun Sep 17, 2017 4:02 am
Forum: Beginners
Topic: Gave up - worn out
Replies: 0
Views: 322

Gave up - worn out

I gave up in the end. I killed the pi a second time as it won't boot, I think, and I can't mend it as I can only work headlessly (I'm in bed). I stupidly removed and reinstalled the fake-hw-clock package, for no reason, trying to fix the horrendous timekeeping. Following that it won't respond to pin...
by CecilWard
Fri Sep 15, 2017 3:10 am
Forum: Beginners
Topic: Old apt-get packages
Replies: 9
Views: 901

Old apt-get packages

I noticed that the version of the apt-get xz-utils package (which I presume contains the xz compressor/decompressor exe) is really really old. What's worrying is that it's an _alpha_ version and there is source-code and some built versions of a 'stable' release on the project website. Same with the ...
by CecilWard
Tue Sep 12, 2017 1:48 am
Forum: Troubleshooting
Topic: Bizarre long name of pi visible on Lan
Replies: 1
Views: 233

Bizarre long name of pi visible on Lan

The rest of the Lan is seeing a bizarre very long name for the pi, which is dhcpcd-671linux-4935-v7armv7lbcm2835.site01.cecilward.com and not based on raspberry-pi-1.* as I set the host name to be using raspi-config. I can't ping "raspberry-pi-1." or "raspberrypi.site01.cecilward.com." (the expected...
by CecilWard
Mon Sep 11, 2017 10:58 pm
Forum: Raspbian
Topic: Powershell for Raspbian?
Replies: 26
Views: 8799

Re: Powershell for Raspbian?

I would love to see Powershell for ARM. The object pipeline thing is so sensible. I just don't know how o/s dependent the code is though, for all I know some of the spec wouldn't make sense away from Windows, never mind the code? If it doesn't run on ARM processors then that's just sloppy design or ...
by CecilWard
Mon Sep 11, 2017 10:50 pm
Forum: Beginners
Topic: Long-running process and logging out of ssh
Replies: 17
Views: 2069

Re: Long-running process and logging out of ssh

The screen /tmux and nohup tips are brilliant. I have set up some aliases for convenience based around screen. It has already saved my bacon umpteen times. I really need to write a shell script now that detects if you have not done already a screen -dmS yet to save a detached session and if not it d...
by CecilWard
Mon Sep 11, 2017 1:11 pm
Forum: Troubleshooting
Topic: Poss crash raspbian bug with jumbo ping / long ping -s of 4000 or more
Replies: 0
Views: 178

Poss crash raspbian bug with jumbo ping / long ping -s of 4000 or more

I was logged in using ssh. I did an ethconfig eth0 mtu 9000 that being the usual built-in wired ethernet, was all good, and then ping -s 4000 some_global_ipv4_address and that either stuffed my ssh session, or killed the o/s, hung the process, I can't tell which, I couldn't recover from it anyway. I...
by CecilWard
Sat Sep 09, 2017 10:36 pm
Forum: Beginners
Topic: Long-running process and logging out of ssh
Replies: 17
Views: 2069

Re: Long-running process and logging out of ssh

Referring to chrisoh's earlier post, would that allow me to keep a process running and even survive closing the ssh client altogether? and then later I can log back in again with ssh and associate the terminal session UI with the still-running old process?
by CecilWard
Sat Sep 09, 2017 11:38 am
Forum: Beginners
Topic: Headless setup for disabled user
Replies: 17
Views: 2865

Re: Headless setup for disabled user

Further info about my situation, so you understand what all the whimpering is about :-) :-( :-)

viewtopic.php?f=91&t=192730&p=1208679#p1208679
by CecilWard
Sat Sep 09, 2017 11:33 am
Forum: Beginners
Topic: General tips about protection against locking yourself out
Replies: 13
Views: 1362

Re: General tips about protection against locking yourself out

@karrika option 2 - 'kiosk mode' ? Would that be using a VM to sandbox things? And option 3 - I ought to check this out. If I can find the right hardware converters - I might be able to get some help to hook up the pi's serial device to a protocol converter, so I could talk to the pi from my iPad ov...
by CecilWard
Sat Sep 09, 2017 11:27 am
Forum: Beginners
Topic: General tips about protection against locking yourself out
Replies: 13
Views: 1362

Re: General tips about protection against locking yourself out

@karrika Good tips The two systems thing is a good idea. But any thoughts about easiest ways to bring system a up to date with system b when a change later comes to be regarded as 'safe' after a while? I really need some way of doing easy backups and version rollback as well. I'd like to find out ou...
by CecilWard
Sat Sep 09, 2017 11:00 am
Forum: Beginners
Topic: General tips about protection against locking yourself out
Replies: 13
Views: 1362

Re: General tips about protection against locking yourself out

Regarding cognitive abilities. I'm posting here now because I can. Now. At the moment. When I'm bad, you won't hear from me, because I can't function, what with pain / extreme fatigue / drunkenness, too many opiates for the pain. And mental effort with severe ME sufferers causes a backlash of extrem...
by CecilWard
Sat Sep 09, 2017 10:35 am
Forum: Beginners
Topic: Long-running process and logging out of ssh
Replies: 17
Views: 2069

Re: Long-running process and logging out of ssh

A friend just told me that all I needed to do was to stick an & on the end of the command line, which I had been doing anyway. But is that enough? When the original process that launched them, i.e. my terminal command line process, quits, lets say I type 'exit', are any processes launched in backgro...
by CecilWard
Sat Sep 09, 2017 10:18 am
Forum: Troubleshooting
Topic: Locked myself out - no ssh and no keybd / screen available
Replies: 7
Views: 612

Re: Locked myself out - no ssh and no keybd / screen available

Thanks for that warning, very useful. I assumed that the hardware to produce the real rs232 voltages probably would be missing. My goal would be to interface to an iPad over wifi ideally, or else Bluetooth. I have seen hardware products that convert some kind of serial comms ports [unknown] into tra...
by CecilWard
Fri Sep 08, 2017 6:12 pm
Forum: Troubleshooting
Topic: Locked myself out - no ssh and no keybd / screen available
Replies: 7
Views: 612

Re: Locked myself out - no ssh and no keybd / screen available

I believe the pi will accept a login over (some sort of) serial port by default? Is that correct? I don't know whether the pi h/w uses correct RS232 voltage levels, or just has a device that is waveform-compatible with standard UARTs but using say 0 / +5V or whatever, not the rs232 levels. I seem to...
by CecilWard
Fri Sep 08, 2017 5:23 pm
Forum: Beginners
Topic: Long-running process and logging out of ssh
Replies: 17
Views: 2069

Re: Long-running process and logging out of ssh

Many many thanks for the tip about tmux guys.

Am I vaguely on the right lines or not concerning disown? If I remember to do it, will it provide the protection I need?
by CecilWard
Fri Sep 08, 2017 5:20 pm
Forum: Beginners
Topic: General tips about protection against locking yourself out
Replies: 13
Views: 1362

Re: General tips about protection against locking yourself out

Bone-in-the-leg? :-) I do live in Skye, Scotland. I suffer from severe ME which means that I am partially bed-bound, although I can make it to the bathroom on my own. Cognitive limitations means that I get confused because of fatigue and pain, the symptoms of ME and also all the many very heavy pain...
by CecilWard
Fri Sep 08, 2017 8:24 am
Forum: Beginners
Topic: Long-running process and logging out of ssh
Replies: 17
Views: 2069

Long-running process and logging out of ssh

I keep getting timed out by my pi while logged in using an ssh client on an iPad (the app is Prompt 2, vg btw). I think it is because the client iPad is going to sleep possibly. Any tips to prevent the ssh problem, to keep it hanging on in there ? I am reading about 'disown' and 'bt', 'fg', ^Z and '...

Go to advanced search