Friday, August 28, 2015

Re: [LINUX_Newbies] Com ports in linux

 

Clarification— Shouldn't that be "dev/ttyS0", the number after the "S" is a "zero"? 

Dan, aa0qc 



On Aug 28, 2015, at 3:19 PM, Cameron Simpson cs@zip.com.au [LINUX_Newbies] <LINUX_Newbies@yahoogroups.com> wrote:

On 28Aug2015 15:06, James Jolin <james.jolin@gmail.com> wrote:
>I want to run a weather app in linux that is a windows app. The app is
>called Cumulus and in the setup it asks for a com port....it defaults to
>com 1. How can I get around this. Can I type in ttySx? Is a virtual box
>the only way? I don't think the ttyS thing will work. Would like some
>thoughts.

FOr a genuine Windows app the two main routes here are Wine and a VM.

Wine ("Wine Is Not an Emulator":-) runs Windows applications in a Windows API 
emulation layer. That is probably the lowest impact way to run your program, 
and it will present ttyS0 as COM1 and so forth.

Otherwise run Windows in a VM (cumbersome, supposedly needs a licence, etc).

However, it sounds like the app is already running for you. Is it something 
portable (eg a Java app) rather than a Windows .exe file?

If it is portable you probably can tell it "/dev/ttyS0" or the like. Unless it 
is badly written

Cheers,
Cameron Simpson <cs@zip.com.au>

We really don't care what APIs Microsoft publishes - the only thing
that matters to us is what APIs are used by the applications we want
to support. In fact, Wine only implements about half of the Windows
APIs. Now some (like my wife) might argue that's because we're just lazy,
but the truth is that over half of the Windows APIs have never been used!
- Jeremy of Wine
http://interviews.slashdot.org/article.pl?sid=04/05/17/0057241&mode=nested


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Posted by: Dan <aa0qc@yahoo.com>
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Re: [LINUX_Newbies] Com ports in linux

 

On 28Aug2015 15:06, James Jolin <james.jolin@gmail.com> wrote:
>I want to run a weather app in linux that is a windows app. The app is
>called Cumulus and in the setup it asks for a com port....it defaults to
>com 1. How can I get around this. Can I type in ttySx? Is a virtual box
>the only way? I don't think the ttyS thing will work. Would like some
>thoughts.

FOr a genuine Windows app the two main routes here are Wine and a VM.

Wine ("Wine Is Not an Emulator":-) runs Windows applications in a Windows API
emulation layer. That is probably the lowest impact way to run your program,
and it will present ttyS0 as COM1 and so forth.

Otherwise run Windows in a VM (cumbersome, supposedly needs a licence, etc).

However, it sounds like the app is already running for you. Is it something
portable (eg a Java app) rather than a Windows .exe file?

If it is portable you probably can tell it "/dev/ttyS0" or the like. Unless it
is badly written

Cheers,
Cameron Simpson <cs@zip.com.au>

We really don't care what APIs Microsoft publishes - the only thing
that matters to us is what APIs are used by the applications we want
to support. In fact, Wine only implements about half of the Windows
APIs. Now some (like my wife) might argue that's because we're just lazy,
but the truth is that over half of the Windows APIs have never been used!
- Jeremy of Wine
http://interviews.slashdot.org/article.pl?sid=04/05/17/0057241&mode=nested

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Posted by: Cameron Simpson <cs@zip.com.au>
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[LINUX_Newbies] Com ports in linux

 

I want to run a weather app in linux that is a windows app.  The app is called Cumulus and in the setup it asks for a com port....it defaults to com 1.  How can I get around this.  Can I type in ttySx?  Is a virtual box the only way?  I don't think the ttyS thing will work.  Would like some  thoughts.
Jim, wa9arb

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Posted by: James Jolin <james.jolin@gmail.com>
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Monday, July 20, 2015

Re: [LINUX_Newbies] linx mint slow

 

On Mon, Jul 20, 2015 at 06:58:25PM -0500, Loyal Barber loyal_barber@yahoo.com [LINUX_Newbies] wrote:
>
>
> On 7/20/2015 4:58 AM, Scott scottro@nyc.rr.com [LINUX_Newbies] wrote:
> >
> >On Mon, Jul 20, 2015 at 02:00:02AM +0000, Justin Bell
> >justin_e_bell2000@yahoo.com [LINUX_Newbies] wrote:
> >
> <snip>
> >
> >I think that trying the XFCE version (which, as far as I can tell, is
> >usually quicker to come out than LXDE versions--someone who knows might be
> >able to give better answers) would probably fix a lot of the slowness.
> >
> >--
> >Scott Robbins
> >
> <snip>
> XFCE for Mint comes out about 2-4 weeks later than Mate and
> Cinnamon. Cinnamon is a resource hog.
> On my old netbook, I run XFCE. As far as I know, there is not
> blessed LXDE version of Mint though I wish
> there were.

Ah, that answers that question--thank you Loyal.
For what it's worth, I assume you could install LXDE on a Mint install and
choose it as your default, but that's untested by me, though I do have a
Mint 17.2 install where I use openbox and dwm.

--
Scott Robbins
PGP keyID EB3467D6
( 1B48 077D 66F6 9DB0 FDC2 A409 FA54 EB34 67D6 )
gpg --keyserver pgp.mit.edu --recv-keys EB3467D6

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Re: [LINUX_Newbies] linx mint slow

 



On 7/20/2015 4:58 AM, Scott scottro@nyc.rr.com [LINUX_Newbies] wrote:
 

On Mon, Jul 20, 2015 at 02:00:02AM +0000, Justin Bell justin_e_bell2000@yahoo.com [LINUX_Newbies] wrote:

<snip>

I think that trying the XFCE version (which, as far as I can tell, is
usually quicker to come out than LXDE versions--someone who knows might be
able to give better answers) would probably fix a lot of the slowness.

--
Scott Robbins

<snip>
XFCE for Mint comes out about 2-4 weeks later than Mate and Cinnamon.  Cinnamon is a resource hog.
On my old netbook, I run XFCE.  As far as I know, there is not blessed LXDE version of Mint though I wish
there were.  For example, the XFCE version of Mint 17.2 just came out.

Loyal

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Posted by: Loyal Barber <loyal_barber@yahoo.com>
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Re: [LINUX_Newbies] linx mint slow

 

Defragging is unnecessary in Linux, Mint or otherwise. The file system takes care of that. It stores data differently from Windows, allowing space for files to grow and then over time silently moving things in the background. 

In my experience, the two biggest reasons for Linux slowing down running low on space in your root file system and having too large a swap file or none at all. If the root file system gets too small then it cannot cache files, especially media files or burning disks. The only time I have really messed up a Linux installation was when I ran out of space on my root partition. Things have got better since then and you can more easily fix things up from the recovery mode in grub.  You will not have the same problem if you run out of space in a home partition. Once you delete a few files then you can be running back to normal speed.

There are utilities to help clean up your root file system. They will remove duplicate files, unused files, orphans, and clean out caches.

I don't know specifically what problem you have but I would look at your file system and see what size of swap file you have and how much free space you have in your root partition. Your swap file should be roughly equal to your RAM. In the old days it used to be double, but RAM is usually much larger than most people need in a modern computer.

My computer runs slowly, but it is a hardware issue. It runs slowly in both Linux and Windows. The difference is that I leave Linux on for weeks at a time. Re-booting periodically will improve things. Time for a new computer soon for me.

Roy



On Saturday, July 18, 2015 6:06 PM, "n9kvx@sbcglobal.net [LINUX_Newbies]" <LINUX_Newbies@yahoogroups.com> wrote:


 
My linux mint is running slow and i am new to linux..how can I improve my performance in running my computer faster..??Looking to defrag,,and delete junk files and all no clue how to do that..


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Posted by: Linux Canuck <linuxcanuck@yahoo.ca>
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Re: [LINUX_Newbies] linx mint slow

 

On Mon, Jul 20, 2015 at 02:00:02AM +0000, Justin Bell justin_e_bell2000@yahoo.com [LINUX_Newbies] wrote:
> There are a variety of reasons that computers run slow. Here is alist of some of the common ones:
> - Insufficient computer memory (you are forever writing to and retrieving temp data from hard drive).

Memory is always good. With Mint some of the desktops can be resources
hogs too.

> - viruses and malware including 3 rd party cookies

Probably not an issue--not impossible but unlikely.

> - excessive start up programs that are really not needed (they slow down the computer start-up and use memory and processor time)

Yeah, most Linux systems are as bad, or worse, than Windows with this.

> - The hard drive needs to be defragged (it is looking everywhere to retrieve a single file)

Probably not an issue.

> - The trash has not been emptied (This is usually not a problem till you are low on hard drive space)

As Justin says, usually not an issue till space is low.

>
>
> In general, a good way to learn to deal with these problems is to:
> - to use Google to look up the problems
> - or see a step-by-step demo on YouTube. They often walk you through it while showing you how the screen looks in the process.

You young 'uns learn differently. When I see someone has made a youtube
video, I get annoyed and go to the next result--why make me sit through 5
minutes of what I could read in 1.

>
> If you are using a recent version Firefox, you may be able tospeed up internet operations by using the options. Click on the 3 horizontal lines on the upper right side of thebrowser screenClick on options. Notice you have choices like Generalsearch Content Privacy SecuritySelect theoptions one by one try some limited changes like; in Privacy, accept 3rd party cookies NEVER ---- and Clear History when Firefox closesin Security try the following (if not already set) Warn me when sites try toinstall add ons--- and block reported attack sites.
>

If browsing is slow, it may be useful to disable ipv6 if it's enabled.
`
> Some othersuggestions are to install add-on ins Firefox options like
> - Ghostery – it gets rid of corporate spying on you
> - Adblock – adds slow you down and are annoying.

Deleting the cookies may not make that big a difference--adblock is useful,
and it's unfortunate--many sites do rely on ads to support them, but there
are so many put in that are the equivalent of spam, that suck up bandwidth
for those with bandwidth limits, that blare out sound and pictures, that
serve malware, that it's become a necessity.

I think that trying the XFCE version (which, as far as I can tell, is
usually quicker to come out than LXDE versions--someone who knows might be
able to give better answers) would probably fix a lot of the slowness.

--
Scott Robbins
PGP keyID EB3467D6
( 1B48 077D 66F6 9DB0 FDC2 A409 FA54 EB34 67D6 )
gpg --keyserver pgp.mit.edu --recv-keys EB3467D6

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Posted by: Scott <scottro@nyc.rr.com>
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