the more accurate it gets to a certain point.
If you do have a hardware clock, Linux automatically
updates it. If you look at system shutdown messages, that's one
of them as processes are being shut off.
Martin McCormick WB5AGZ
x27;t know yet is what needs to happen to
convert .uvc in to something that looks like it came from a
digital TV camera or flat-bed scanner?
Thanks for any and all constructive ideas.
Martin McCormick
etch in 2018. The Pi runs 24/7 and
I've not had a bit of trouble with ntp keeping it to within a
second which is about as good as it normally gets on any
unix-like system.
Martin McCormick
lock rate
is 3.7945 million plus a few more decimal places per second and
PAL along with SECAM are just above 4 MHZ. The A/D converter has
to sample at twice that rate to keep Mr. Nyquist from haunting
anybody from his grave.
Martin McCormick
deloptes writes:
> I still don't get it how you want to capture and process video to text to
> audio - perhaps deduplicate frame content etc. - how many frames per
> second
> do you want to process, cause I did not get this with the 4Mhz and how it
> is relevant. I was thinking your display is ru
e problem, better than
nothing but not much.
If it lets me reconfigure the occasional wayward BIOS on
an old system without having to bother my dear wife or a friend,
I will call it good enough. If we let perfect kill good enough,
nothing ends up getting done.
Martin McCormick WB5AGZ
I will
on the first Linux system
was due to the fact that the video card has a VGA socket and
possibly a DVI socket. The video is on the DVI socket most
likely and the VGA socket has no signal, explaining the black
screen of nothing.
Thanks to all!
Martin McCormick
is is a
good training session if nothing else.
Most of the standard unix utilities like ls, mount cd and
a bunch more are there and work properly as nearly as I can tell.
Martin McCormick
ned out to be. I am amazed that the corrupted disk worked at
all.
Thanks for clearing up the confusion.
Martin McCormick
drives.
If you ever end up recovering any data with floppies,
write protect them especially if you are not sure how they were
made in the first place.
Martin McCormick
king right up to when it stopped working.
Thanks.
Martin McCormick
WB5AGZ
en the drive
is powered up and goes away when the drive is disconnected.
Thanks.
Martin
WB5AGZ
local10 writes:
On 2020-04-01 18:07, Martin McCormick wrote:
>
> >> Out of curiosity, I wondered what might happen if I had
> >> two thumb drives containing the same UUID.
>
that could mechanize RS-232 communications if you
needed to do that.
Basically, what is the best way in command-line mode to
deal with serial comm ports these days?
Thanks.
Martin McCormick
Greg Wooledge writes:
> On Fri, Apr 03, 2020 at 08:14:12AM -0500, John Hasler wrote:
> > Look at gkermit. It's evidently a GPL rewrite of ckermit. Also take a
> > look at screen.
>
> Yeah, I did an "apt-cache search ckermit" too.
>
> The package description for gkermit says,
>
> The non-fre
nd make it
run at it's maximum speed.
Martin
The Wanderer writes:
> On 2020-04-03 at 17:40, elvis wrote:
>
> > On 3/4/20 11:04 pm, Martin McCormick wrote:
> >
> >> The only thing that I truly miss after upgrading to buster is that
> >> the package known a
itten but that's no mystery.
The unix convention of typing the Up-Arrow and starting
microcom is very handy since one does not have to type
microcom -f -p/dev/ttyUSB4 -s9600
each time. Actually, I usually get away with !mic followed by
Enter and it starts. Good work to everybody who c
deloptes writes:
> Chris Rhodin wrote:
>
> > Tonight I'll look at the serial port ioctls and see if I can spot a
> > difference there. I also try enabling flow control and fiddling with
> the
> > signals to see if that unstops it.
>
> Are you sure that this is enabled in the BIOS, also some se
it with just the microcom app but this is not a show stopper
at all. At least there is still a serial terminal that can talk
to devices whose only connection to the outside world is a RS-232
cable.
Again, thanks for everybody's help.
Martin McCormick
Is there any environment variable or local configuration
variable which will make date produce the 24-hour time stamp
similar to past implementations of date?
Martin McCormick
Reco writes:
> Hi.
> If you need it systemwide, consider doing this (will require relogin, at
> least):
> echo 'LC_TIME=C' >> /etc/default/locale
That was what I needed. /etc/default/locale did not contain that
line but did contain
# File generated by update-locale
LANG="en_US.UTF-8"
Greg Wooledge writes:
> On Tue, Apr 28, 2020 at 10:53:25PM -0600, Charles Curley wrote:
> > Adding
> >
> > alias date='date +"%a %b %d %T %Z %Y"'
> >
> > to one's .bashrc or /etc/bashrc should get the OP what he wants.
It did make just the date command work as desired. I
actually tried t
Greg Wooledge writes:
> It's an intentional change. It's a "feature" from the libc developers'
> point of view. As far as they are concerned, Americans use 12-hour
> clocks, so the en_US.utf8 locale is supposed to present times in 12-hour
> format by default.
This American is an amateur
value from '10.0' to '10.4'
I think I saw this once before but don't remember how to
make it good.
Thanks
Martin McCormick
possibly with security consequences.
>
> Just imagine a malicious (or just incompetent) third-party repository
> suddenly claiming to be "buster-security" on a system configured to
> install security updates automatically.
It makes perfect sense to me. Thanks to all who responded and
opped so cron and other system utilities don't stop
running which is what happens when systems get too busy.
Thanks for any constructive suggestions.
Martin McCormick WB5AGZ
Greg Wooledge writes:
> All-caps names are reserved for environment variables (HOME, PATH),
> and internal shell variables (IFS, PWD, HISTFILE).
>
> Avoiding all-caps names allows you to avoid collisions with a variable
> name that might be used for something else. Most of the time. This
> bein
=?euc-kr?b?yLK6tMjx?= writes:
> Hi Arun,
>
> Yes this is question place.
>
> Sincerely, Byung-Hee
>
It is one of the most helpful groups I know of as
sometimes, there are questions that don't lend themselves to a
search engine string although one can get really lucky if you try
to not u
drives being mounted
contain archives which one doesn't want to lose so mounting them
as read-only would be a good way to protect them.
Thank you.
Martin McCormick
We normally have a stable power situation, here, but
recently we had 4 small glitches in one day plus several more
before and after that day and anything mounted rw usually needs
the fsck procedure afterward to be sure it is still any good.
Nothing like power interruptions to make a fellow truly
paranoid.
Martin McCormick
an do things to the boot drive while it is
unmounted with no active file system.
Thank you.
Martin McCormick
"Thomas Schmitt" writes:
> Hi,
>
>
> Trying it with
> qemu-system-x86_64 -enable-kvm -m 512 -cdrom
> debian-9.3.0-amd64-netinst.iso
>
> I select menu item "Advanced options"
> and then menu item "Rescue mode".
> Now i get to choose by menus: Language, Country, Keymap.
> (Some internal retri
specifically means 12:00 and then 13:00, not from 12:00
until 13:00 would cause the */5 specification to stop running.
I've only been doing unix for 29 years so I probably
should know a lot more but there may someday be a time when this
would have been a critical problem so it is good
rhkra...@gmail.com writes:
> On Thursday, August 09, 2018 01:47:24 PM Greg Wooledge wrote:
> > On Thu, Aug 09, 2018 at 05:39:36PM +, tech wrote:
> > > Should'nt be time to move away from an old mail-listing to something
> more
> > > modern like a bugzilla or else ???
> >
> > No.
>
> +1
Ditto
Thanks to both Greg Wooledge and Reco.
Reco writes:
> Hi.
>
> On Thu, Aug 23, 2018 at 01:29:30PM -0500, Martin McCormick wrote:
> > */5 5-12,13-23 * * * sh -c ". $HOME/.master.env; ./etc/do_mail"
> ...
> > In this case, no harm was done bu
days, one should not install alsa-base. As I
reported, this system is capable of /dev/dsp but it seems to have
lost it again. That is why I am confused.
Thanks for any constructive suggestions.
Martin McCormick
Greg Wooledge writes:
> /dev/dsp is part of the legacy OSS (Open Sound System) interface. If
> you play audio using only ALSA, or ALSA + Pulse, you do not need this
> older interface.
>
> If your software requires the /dev/dsp interface (because it predates
> ALSA), you can try loading the snd-p
nging of the Titanic's deck chairs actually
made a difference.
Any constructive ideas are appreciated. If I left the
drives mounted all the time, there would be no spew but since
these are backup drives, having them mounted all the time is
quite risky.
Martin McCormick WB5AGZ
=?UTF-8?Q?=c3=89tienne_Mollier?= writes:
>
> Good Day,
>
> Not sure if that is the kind of answer you would wish to
> expect, but have you considered doing umounts sequentially?
> (optionally after synchronizing file systems)
>
> sync
> umount /var/cache/rsnapshot
> umou
=?UTF-8?Q?=c3=89tienne_Mollier?= writes:
> Good Day Gene,
>
> Gene Heskett 2018-09-12T03:14 +0200 :
>
> Should a badly placed “rm” command occur on the system, the
> system and both of its backup disks would be wiped clean. I
> don't believe the risk mentioned here over was related to disk
>
ial approach appears to have solved
the problem.
Thank you for your help.
Martin McCormick
no and what sampling rate to
use.
I off-handedly wondered where the sound stuff went but
figured it was in /dev somewhere but wasn't forced to look yet.
I don't know how I missed /dev/snd but I kept looking for
anything with pcm or dsp so, of course, never found it that way.
Thanks! Yes, I am my version of awake.
Martin McCormick WB5AGZ
on January
1 of 1970. What it actually does is to not set the variable and
you get the "Use of uninitialized variable" squawk with no
value assignment to the variable.
The [9] referrs to the ninth element in an array which
should be the time stamp.
Thanks for any suggestions.
Martin McCormick WB5AGZ
Bob McGowan writes:
> It looks like this has to do with mixing the usage of the "native" stat of
> Perl with the "object" version from File::stat.
>
>
>
> The 'stat' from File::stat returns a reference to an object, which has the
> stuff you're wanting, tucked away internally as object variable
that get lost if you end early.
Many thanks.
Martin McCormick
shake the most recent
data out of buffers and commit it to disk and it is highly
dependant on the operating system as to when the write actually
goes to disk.
Again many thanks.
Martin McCormick
e, the strings
it is capturing appear to be good but it could be capturing for
minutes on end at times and it needs to just be able to run like
the wind and store lines as quickly as it can.
Thank you.
Martin McCormick
amateur radio WB5AGZ
Lee writes:
> https://unix.stackexchange.com/questions/25372/turn-off-buffering-in-pipe/
>
> Regards,
> Lee
Thank you and all others. It turns out that getting the
autoflush to work in perl is on a par with falling off of a log
for ease of execution.
There is a perl variable ca
David Wright writes:
> On Sat 23 Mar 2019 at 18:23:47 (+0100), to...@tuxteam.de wrote:
> > On Sat, Mar 23, 2019 at 10:27:01AM -0500, David Wright wrote:
> > > On Fri 22 Mar 2019 at 17:45:50 (+0100), to...@tuxteam.de wrote:
> >
> > > Reading the OP's problem, I wonder how you're meant to detect
> >
deloptes writes:
> I just wonder why one would do that, but it is again your business.
In all but a very small handful of countries around the
world, the hobby of amateur radio exists and it's justification
for existence is to allow people to self-train as to how
electronic communication
I am stuck between old package and script files which I can't
seem to get rid of so new ones can stop and start services in the
new way.
The package in question is called speakup and is the
screen reader for debian among other Linuxen. I need to blow
away the old package and install an up
Charlie Kravetz writes:
> You may have to remove Orca and all associated programs before you can
> remove espeakup.
Thanks and you are correct but orca is not installed on
either of the two systems so thankfully, that won't be necessary
> Other than that, someone much wiser than myself w
quite some
time so the upgrade didn't cause it. It just accentuates it
since sudo now complains.
Thanks for all constructive ideas.
Martin McCormick WB5AGZ
e working system
and sudo commands now work as they are supposed to.
If there turns out to be any more issues, I will use the
steps you suggested plus compare file permissions and ownership of
all related files. Fortunately, all the stretch systems I have
are basically copies of each other.
Again, many thanks to all who responded.
Martin McCormick
re and not the test file slipped in under the
mount.
Has this always been the normal behavior of mount or has
there been a change?
I see this behavior as being useful like self-modifying
code which is usually a huge thing to avoid but it was kind of
interesting to notice.
Martin McCormick
nothing. Shift-printscrn
just did the same thing as printscrn by itself.
Is there anything else I can try?
Martin McCormick
Here is the setup. We are on a private vlan as in 192.168.x.x.
All local host names are resolved via hosts files. Messages to
go to the big wide world must go through Suddenlink's SMTP
smarthost and I definitely don't want to break that.
On rare occasions, I want to forward an email to t
ponding to the Linux box.
Thank you. That is essentially what I am thinking of. I
setup a similar setup before I retired. The only difference was
that all of the hosts at work had fully-qualified domain names
but dovecot worked fine on the Linux box and the mac received any
mail I sent without any problem.
Martin McCormick
Bob Weber writes:
> Why not create a user on the Linux box to receive such emails and have the
> MAC client connect to that user on the Linux box. You might have to
> install a pop server (popa3d ... easiest to install and configure) or imac
> server (dovecot-imapd ... harder to configure and pro
Greg Wooledge writes:
> Either you didn't run "apt-get update" first, or your mirror is out of
> sync. The current version of dovecot-core in buster is
> 1:2.3.4.1-5+deb10u1.
Thank you. It was the former. I failed to run apt-get
update but I didn't just forget. Ever since I upgraded
ave got right now is usable but not right. Any
constructive ideas are appreciated.
Thank you
Martin McCormick
Mac, the
Mac says it can't read the disk and immediately offers to
initialize it for you.
Thanks.
Martin McCormick
he image
would also need to be for AMD64.
Any constructive suggestions are much appreciated.
Martin McCormick
ructive suggestions as to how
to go from Setup to recovery shell.
Martin McCormick
nd and the disk drive on the other.
There's an old saying: "Standards are great. Everybody
should have one."
Thanks.
Martin McCormick
Dan Ritter writes:
> If I recall correctly, Martin doesn't see well, which explains a
> chunk of the confusion here.
Well, my wife has excellent vision and we were talking
about how pictures can be almost worthless after a certain point.
Several of those small connectors look similar. A
drive came in.
There is a small pocket in the tray containing a pamflet
that one suddenly realizes is too deep to be just the booklet.
Everything was there and I do believe that is the first
usb-C cable I have ever encountered.
Again, thanks for clearing up the confusion.
Martin
Andrei POPESCU writes:
> From memory, I'm aware of two methods:
>
> 1. Any time after starting the installer, press Ctrl+F2 and there will
> be a prompt to press Enter to enable the console. Ctrl+F1 returns to the
> installer.
>
> If using the graphical installer you will need Ctrl+Alt+F2 and Ct
I ran Freebsd as a virtual system on a Mac Pro at work
for a year or so (I don't remember exactly how long) and it
worked very well with vbox until one day when Apple updated MacOS
and poof! my vm died.
The only problem I had before that was one most people
wouldn't have in that th
has X bytes in it and
then rolling it over.
I would like to do that same thing on all the Debian
systems I run. Am I just missing the right documentation or is
there no way to do that through the stock syslogd?
Thank you.
Martin McCormick WB5AGZ Stillwater, OK
Systems Engineer
"Liam O'Toole" writes:
> See the files in the /etc/logrotate.d directory, and the logrotate man
> page, for details of how to adjust the rotation policy.
Thank you. I knew I must be using the wrong words for searching.
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ystem has 256 K of RAM. Partition 1 will be Linux and
partition2 will be swap.
Martin McCormick WB5AGZ Stillwater, OK
Systems Engineer
OSU Information Technology Department Network Operations Group
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mount point is
all ready to receive files if I can get past this impass.
Thanks for any explanation as to why I get this error
even thought I shouldn't be attempting to write to /cdrom.
Martin McCormick WB5AGZ Stillwater, OK
Systems Engineer
OSU Information Technology Departme
inside the logic that is
keeping these 3 scripts from running?
Thank you.
Martin McCormick WB5AGZ Stillwater, OK
Systems Engineer
OSU Information Technology Department Network Operations Group
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exing the head rack.
Martin McCormick
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console.
That is not an option as there are no native serial ports on
this system. I need every screen message to go to a file
somewhere and that may tell me something new.
I think when I finally fix the problem, I will have
learned a lot, but I've been about 2 minutes from solving it for
not mistaken, that was the
operating principle behind the LapLink system.
Thank you.
Martin McCormick WB5AGZ Stillwater, OK
Systems Engineer
OSU Information Technology Department Network Operations Group
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hanks
for helping me think.
Martin McCormick WB5AGZ Stillwater, OK
Systems Engineer
OSU Information Technology Department Network Operations Group
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pears to write
the file without complaint. You just can't read anything off the
disk after that.
Martin McCormick WB5AGZ Stillwater, OK
Systems Engineer
OSU Information Technology Department Network Operations Group
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dies. Every week, I empty
the jail and clear out the rules that were created. I think now
that I probably could just have the rule in for 30 seconds or so
and get rid of most of the headaches.
I haven't created anything similar for Linux yet or I
would be happy to let folks try
tamp consistant with the time I
said "make modules_install." What am I not doing to make a
complete setup for the new kernel?
Thanks.
Martin McCormick WB5AGZ Stillwater, OK
Systems Engineer
OSU Information Technology Department Network Operations Group
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I set up a Debian serial console installation and am
going to add another Linux kernel to the list in
/boot/grub/menu.lst.
When looking at the boot paragraphs, I see an interesting
thing that I don't quite understand. Both the possible boot
methods have the savedefault line as the
cation for
you, you may use both Linux and Windows and the time will be
right either way. Since Windows lets you choose UTC, that sounds
like the way out of the dilemma.
Martin McCormick WB5AGZ Stillwater, OK
Systems Engineer
OSU Information Technology Department Network Operations Group
. Cron, at and
expect are true gems and the people who wrote them and made them
available to all truly left the wood pile higher than they found it.
Martin McCormick WB5AGZ Stillwater, OK
Systems Engineer
OSU Information Technology Department Network Operations Group
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ts
I will write to generate these messages.
Thanks for any good ideas. I'd love to read the manual
if I can find one that fills in the gaps.
Martin McCormick WB5AGZ Stillwater, OK
Systems Engineer
OSU Information Technology Department Network Operations Group
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Thanks very much, but this is actually the start of a robot which
will receive mail containing the data to be processed, crunch it,
and "reply" to the sender with the processed data.
Kevin Mark writes:
>but I think
> there is a simpler solution if you have the resources:
This will be a ve
I am working on a shell script that generates file names
to use with bladeenc. Everything works right except that every
single music file the script creates via bladeenc has a ? or
question mark preceding the words of the title. Example: A
Christmas disk contains a song named "Joy to the
Hmm.
Bill Marcum writes:
> How does your script create the file names?
It initially gets it from the index number of the audio file
that cdda2wav generates plus the Tracktitle= line that appears in
one of the audio_NN.inf files. In this case, audio_01.inf which
contains many information
Bill Marcum writes:
> Try this:
> echo "$songfilename" | od -to1z
It suddenly hit me that you suggested I put the "'s
around the variable name when I did the test so I did and I think
we've got the culprit though I am not sure what to do to fix it.
This time I tried
echo "$songfilename"
he horizontal tab to the contents of a quoted string?
This is the standard gnu bash you get in a shell script
if the first line is
\#! /bin/sh
Normally, the \ is not found here, but my mailer gets
upset if it sees a line starting with "#"
Martin McCormick WB5AGZ Stillw
t I did was pipe the output of the line through sed as in
|sed 's/\//\-/g' and that seemed to make everything good enough
to use. The title with the / now has a - instead.
Martin McCormick WB5AGZ Stillwater, OK
Systems Engineer
OSU Information Technology Department Network Operati
ole source in here, but it's
322 lines and all of it works except what I have demonstrated.
With alsa installed, what is the best practice for
opening some version of /dev/dsp for two 8-K 8-bit streams such
that you get a 16-bit stream?
Thanks for any suggestions or pointers to
I remember reading about a UNIX utility whose name
escapes me. You feed it ASCII text and it breaks lines as near
to a desired length as possible without splitting words. Anyone
remember the name of this utility?
Thanks.
Martin McCormick WB5AGZ Stillwater, OK
Systems Engineer
Celejar writes:
> fmt -w nnn?
That's it. Thanks!
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n, it needs to work in
normal non-GUI environments.
Thanks.
Martin McCormick
Systems Engineer
405 744-7572 Stillwater, OK
Information Technology Department
Network Operations Group
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Gregory Seidman writes:
>There's a vim script to do such things. Check it out:
Thank you.
Martin McCormick
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Kevin Mark writes:
>> There are probably many ways to do this. I would suggest "sox" to convert th
>e
>> mp3 files to wav, and "k3b" to create the audio tracks from the wav files.
>>
>I was just thinking that some 'modern' cd player can play a data cd full
>of mp3 and a standard format audio cd. K
g out the commercial
spam and then have a mechanism for detecting the exploit
messages which frequently slip through bogofilter because they
look too much like legitimate traffic.
Martin McCormick WB5AGZ Stillwater, OK
Systems Engineer
OSU Information Technology Department Network Operations
file is the means of infection. The only thing that didn't
match was that bugbear makes a gif file with a compound extension
like .exe.gif. It could also be that the thugs have refined it
so as to make more normal-looking files.
To me, this is interesting but the goal is to
mechan
at's still quite a waste of time. I
wanted to make sure there wasn't something completely unknown
that I was missing out on.
Thanks for all constructive suggestions.
Martin McCormick WB5AGZ Stillwater, OK
Systems Engineer
OSU Information Technology Department Network Ope
ch tags messages that go through it as to their
probability of being spam and I already have procmail rules to
look for the headers which have been right on target.
Again, thanks for the suggestions.
Martin McCormick WB5AGZ Stillwater, OK
Systems Engineer
OSU Information Technology
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