Re: [gentoo-user] Switching current java-vm for a single application

[Leonardo Guilherme]

Problem is, the SenchaCmd script runs java directly, which resolves to
/usr/bin/java, which itself is a script that checks the user choice
regarding the selected java-vm: setting JAVA_HOME does nothing to fix that.
I can edit the SenchaCmd script to run java directly, that would be the
quickfix.

Thanks for the input.

Em seg, 1 de fev de 2016 às 13:41, Alon Bar-Lev 
escreveu:

> On 31 January 2016 at 19:17, Leonardo Guilherme
>  wrote:
> >
> > Hello.
> >
> > I'm using OpenJDK JVM regularly on my machine instead of Oracle's one,
> primarily because of the infinality patches and because I prefer open
> source software.
> >
> > There are some applications, though, that do not play ball with it
> (namely, SenchaCmd) and I have to keep switching back and forth between
> installed java-vms just to run it.
> >
> > I know nothing about Java or its environment, is there a way to specify
> the java-vm just for this application instead of doing "eselect java-vm set
> user 1; sencha *stuff*; eselect java-vm set user 3" everytime?
> >
> > Is there a set of environment variables that can do this? Shall I wrap
> the command in a shell script? Ideas?
>
> Usually, every [well behaved] java application has JAVA_HOME or
> similar environment variable to tell it where java is.
> You can find a valid java homes at /usr/lib/jvm/*/jre or if you
> manually extracted oracle it will probably live in /opt/xxx.
>
> What you should do is go over this SenchaCmd startup script and find
> what it expects.
>
> Regards,
> Alon
>
>

Re: [gentoo-user] ls config file?

[David Haller]

Hello,

On Tue, 02 Feb 2016, Raffaele BELARDI wrote:
>Andrew Tselischev wrote:
>> On Tue, Feb 02, 2016 at 09:54:37AM +0100, Raffaele BELARDI wrote:
>>> The option that controls this is --quoting-style, so
>>> can alias 'ls' to include this option but was wondering if there is a
>>> global configuration file controlling such behaviour.
>>
>> There is no configuration file for ls(1), but we can still solve the
>> problem. It is free software, after all!
>>
>> Put the file fix.patch in /etc/portage/patches/sys-apps/coreutils-8.25/
>> and apply the following changes to the ebuild (in the function src_prepare):
>
>fantastic!
>
>but I think I'll stick with the alias approach ;-)

Whatever happened to LS_OPTIONS?

But:

# ltrace -e getenv ls >/dev/null
ls->getenv("QUOTING_STYLE")  = nil
ls->getenv("COLUMNS")= nil
ls->getenv("TABSIZE")= nil
ls->getenv("LS_BLOCK_SIZE")  = nil
ls->getenv("BLOCK_SIZE") = nil
ls->getenv("BLOCKSIZE")  = nil
ls->getenv("POSIXLY_CORRECT")= nil
ls->getenv("BLOCK_SIZE") = nil

And there we go:

$ for f in *; do echo ">>$f<<"; done
>>foo *" '
 bar*<<
>>foo *" ' bar*<<
>>foo" ' bar<<
>>more<<
$ QUOTING_STYLE=literal ls -1
foo *" '? bar*
foo *" ' bar*
foo" ' bar
more
$ QUOTING_STYLE=shell ls -1
'foo *" '\''? bar*'
'foo *" '\'' bar*'
'foo" '\'' bar'
more
$ QUOTING_STYLE=c ls -1
"foo *\" '\n bar*"
"foo *\" ' bar*"
"foo\" ' bar"
"more"
$ QUOTING_STYLE=escape ls -1
foo\ *"\ '\n\ bar*
foo\ *"\ '\ bar*
foo"\ '\ bar
more

Where and how you set QUOTING_STYLE (/etc/*, ~/.*) is up to you. Or
use an alias.

HTH,
-dnh, who consideres strace and ltrace as _basic_ tools ;)

-- 
Bored? Want hours of entertainment? Just set the initdefault to 6! Whee!

Re: [gentoo-user] Switching current java-vm for a single application

[Alon Bar-Lev]

If all what script is doing is executing "java", just add the right
JRE to your PATH as first element.

On 3 February 2016 at 01:04, Leonardo Guilherme
 wrote:
> Problem is, the SenchaCmd script runs java directly, which resolves to
> /usr/bin/java, which itself is a script that checks the user choice
> regarding the selected java-vm: setting JAVA_HOME does nothing to fix that.
> I can edit the SenchaCmd script to run java directly, that would be the
> quickfix.
>
> Thanks for the input.
>
> Em seg, 1 de fev de 2016 às 13:41, Alon Bar-Lev 
> escreveu:
>>
>> On 31 January 2016 at 19:17, Leonardo Guilherme
>>  wrote:
>> >
>> > Hello.
>> >
>> > I'm using OpenJDK JVM regularly on my machine instead of Oracle's one,
>> > primarily because of the infinality patches and because I prefer open 
>> > source
>> > software.
>> >
>> > There are some applications, though, that do not play ball with it
>> > (namely, SenchaCmd) and I have to keep switching back and forth between
>> > installed java-vms just to run it.
>> >
>> > I know nothing about Java or its environment, is there a way to specify
>> > the java-vm just for this application instead of doing "eselect java-vm set
>> > user 1; sencha *stuff*; eselect java-vm set user 3" everytime?
>> >
>> > Is there a set of environment variables that can do this? Shall I wrap
>> > the command in a shell script? Ideas?
>>
>> Usually, every [well behaved] java application has JAVA_HOME or
>> similar environment variable to tell it where java is.
>> You can find a valid java homes at /usr/lib/jvm/*/jre or if you
>> manually extracted oracle it will probably live in /opt/xxx.
>>
>> What you should do is go over this SenchaCmd startup script and find
>> what it expects.
>>
>> Regards,
>> Alon
>>
>

Re: [gentoo-user] [OT] Manipulating a mobile external harddisk

[Meino . Cramer]

Dale  [16-02-02 09:28]:
> meino.cra...@gmx.de wrote:
> > Hi,
> >
> > for storing not so often used data I bought a 2.5" external USB
> > harddisk.
> >
> > This little beast has a very small timespan before it goes idle 
> > and (from the time needed to be woken up) it seems, it parks its
> > heads then.
> >
> > The main usage of the disk to be connected to my PC from time to
> > time, copy some data and unconnect it again. It will never be used
> > with a laptop or such (accu driven machinery).
> >
> > Is it advisable to try to longen the active time before the disk
> > goes idle to prolong the lifetime ?
> > Is it possible to do this with hdparm?
> > It is a sane idea? ;)
> >
> > Thank you very much in advance for any help !
> > Best regards,
> > Meino
> >
> >
> 
> I'm no expert by any means.  I've read all sort of opinions on this. 
> I've read that it is better to leave puters running 24/7 so that there
> is no cool/hot cycles and that it makes things last longer.  I've also
> read just the opposite for different reasons.  Which is true, not sure. 
> I know I leave my machine running 24/7 and hardware wise, it has worked
> well plus I don't have to wait for boot up and such either.  I might
> add, I'm on my puter a LOT.  Even when I am asleep, I have it
> downloading something, usually TV shows or something.  That is why I
> have a 3TB drive that is almost full.  I do have a backup drive now
> tho.  ;-)
> 
> I would also suspect that this may also depend on how the drive is made
> and what it is engineered to handle.  If a drive is made with a good
> solid design for parking those heads a lot, then it should handle them. 
> If it is not designed to handle it, well, it may not end well.  Maybe
> research that model and see if you can find the limits on it, if there
> is any, info or limits. 
> 
> Alan usually has some good info to share on this sort of topic.  He
> deals with a lot of servers and other hardware.  Maybe he can provide
> more info or a link to some.  It's a interesting question tho. 
> 
> Dale
> 
> :-)  :-) 
> 
> 


Hi @all,

thanks for the infos so far.

Just to correct me if I got it wrong expressed 
(sorry, I am no native english speaker...)

The harddisk in question is this little external
USB hd, which is used for data storage only.
It is by far no server disk or anything else 
high-end-24/7-thingy... ;)

Best regards,
Meino

Re: [gentoo-user] [OT] Manipulating a mobile external harddisk

[Dale]

meino.cra...@gmx.de wrote:
> Hi,
>
> for storing not so often used data I bought a 2.5" external USB
> harddisk.
>
> This little beast has a very small timespan before it goes idle 
> and (from the time needed to be woken up) it seems, it parks its
> heads then.
>
> The main usage of the disk to be connected to my PC from time to
> time, copy some data and unconnect it again. It will never be used
> with a laptop or such (accu driven machinery).
>
> Is it advisable to try to longen the active time before the disk
> goes idle to prolong the lifetime ?
> Is it possible to do this with hdparm?
> It is a sane idea? ;)
>
> Thank you very much in advance for any help !
> Best regards,
> Meino
>
>

I'm no expert by any means.  I've read all sort of opinions on this. 
I've read that it is better to leave puters running 24/7 so that there
is no cool/hot cycles and that it makes things last longer.  I've also
read just the opposite for different reasons.  Which is true, not sure. 
I know I leave my machine running 24/7 and hardware wise, it has worked
well plus I don't have to wait for boot up and such either.  I might
add, I'm on my puter a LOT.  Even when I am asleep, I have it
downloading something, usually TV shows or something.  That is why I
have a 3TB drive that is almost full.  I do have a backup drive now
tho.  ;-)

I would also suspect that this may also depend on how the drive is made
and what it is engineered to handle.  If a drive is made with a good
solid design for parking those heads a lot, then it should handle them. 
If it is not designed to handle it, well, it may not end well.  Maybe
research that model and see if you can find the limits on it, if there
is any, info or limits. 

Alan usually has some good info to share on this sort of topic.  He
deals with a lot of servers and other hardware.  Maybe he can provide
more info or a link to some.  It's a interesting question tho. 

Dale

:-)  :-) 

[gentoo-user] ls config file?

[Raffaele BELARDI]

After a recent update of coreutils to version 8.25, 'ls -l' started 
displaying names containing spaces enclosed in single quotes, e.g.:

drwxr-xr-x  6 belardi users 4096 May 21  2012 'Audio Libraries'
drwxr-xr-x  2 belardi users 4096 Jun 10  2014 Brochure

The option that controls this is --quoting-style, so 
--quoting-style=literal returns to the old behaviour (which I prefer). I 
can alias 'ls' to include this option but was wondering if there is a 
global configuration file controlling such behaviour.

thanks,

raffaele

[gentoo-user] Re: Java 8 and remote access

[Grant]

> >> >> > > I need to run a Java 8 app remotely.  Can this be done on Gentoo?
> >> >
> Bummer.  FYI guys, Amazon Workspaces, Amazon Appstream, and Microsoft
> Azure RemoteApp kinda work the way I've described but they all have
> limitations which exclude them from working for me in this case.  It
> looks like I'll be admin'ing another remote Gentoo system for this.
>


Do any cloud VM providers have Gentoo as an OS option?  If not, is there a
good one that lets you install your own OS?

BTW since Java is a VM I'm surprised there is no service that lets you just
upload a Java app and run it remotely on the service without any OS
management.  Am I missing anything there?

- Grant

Re: [gentoo-user] ls config file?

[Andrew Tselischev]

On Tue, Feb 02, 2016 at 09:54:37AM +0100, Raffaele BELARDI wrote:
> The option that controls this is --quoting-style, so 
> --quoting-style=literal returns to the old behaviour (which I prefer). I 
> can alias 'ls' to include this option but was wondering if there is a 
> global configuration file controlling such behaviour.

There is no configuration file for ls(1), but we can still solve the
problem. It is free software, after all!

Put the file fix.patch in /etc/portage/patches/sys-apps/coreutils-8.25/
and apply the following changes to the ebuild (in the function src_prepare):


--- old/sys-apps/coreutils/coreutils-8.25.ebuild2016-01-30 
15:56:16.0 +
+++ new/sys-apps/coreutils/coreutils-8.25.ebuild2016-02-02 
10:18:38.985961581 +
@@ -72,6 +72,8 @@
touch src/dircolors.h
touch ${@/%x/1}
fi
+
+   epatch_user
 }


Don't forget to regenerate the manifest

ebuild .../sys-apps/coreutils/coreutils-8.25.ebuild manifest

and recompile!


;-)
diff a/src/ls.c b/src/ls.c
--- a/src/ls.c
+++ b/src/ls.c
@@ -1581,7 +1581,6 @@ decode_switches (int argc, char **argv)
   if (isatty (STDOUT_FILENO))
 {
   format = many_per_line;
-  set_quoting_style (NULL, shell_escape_quoting_style);
   /* See description of qmark_funny_chars, above.  */
   qmark_funny_chars = true;
 }

Re: [gentoo-user] [OT] Manipulating a mobile external harddisk

[Daniel Frey]

On 02/02/2016 12:38 AM, meino.cra...@gmx.de wrote:
> Hi @all,
> 
> thanks for the infos so far.
> 
> Just to correct me if I got it wrong expressed 
> (sorry, I am no native english speaker...)
> 
> The harddisk in question is this little external
> USB hd, which is used for data storage only.
> It is by far no server disk or anything else 
> high-end-24/7-thingy... ;)
> 
> Best regards,
> Meino
> 
> 
> 
> 

Also, USB disks will have a USB timeout before the port itself sleeps.
It could be that the USB drive firmware itself sleeps the drive when the
USB port goes to sleep.

Dan

Re: [gentoo-user] [OT] Manipulating a mobile external harddisk

[wabenbau]

meino.cra...@gmx.de wrote:

> Is it advisable to try to longen the active time before the disk
> goes idle to prolong the lifetime ?
> Is it possible to do this with hdparm?

I have three external USB disks. Two of them are going to sleep
after a few minutes, one is always spinning.

All of them ignore the hdparm commands. That means I could not 
change any of the disk parameters with hdparm.

--
Regards
wabe

Re: [gentoo-user] ls config file?

[Andrew Tselischev]

On Tue, Feb 02, 2016 at 10:47:04AM +, Andrew Tselischev wrote:
> [...]
> Don't forget to regenerate the manifest
> 
>   ebuild .../sys-apps/coreutils/coreutils-8.25.ebuild manifest
> 
> and recompile!
> [...]

I forgot to mention, that if you seriously want to take that approach,
you'd need to mirror coreutils' ebuilds in your own portage overlay. The
changes to the ebuild (and Manifest) will get overwritten next time you
sync the tree.

Re: [gentoo-user] ls config file?

[covici]

Neil Bothwick  wrote:

> On Tue, 2 Feb 2016 11:07:02 +, Andrew Tselischev wrote:
> 
> > I forgot to mention, that if you seriously want to take that approach,
> > you'd need to mirror coreutils' ebuilds in your own portage overlay. The
> > changes to the ebuild (and Manifest) will get overwritten next time you
> > sync the tree.
> > 
> 
> There's no need for that. Just create /etc/env/portage/sys-apps/coreutils
> containing
> 
> post_src_unpack() {
>   cd "${S}"
>   epatch_user
> }

Is it not /etc/portage/env instead?


-- 
Your life is like a penny.  You're going to lose it.  The question is:
How do
you spend it?

 John Covici
 cov...@ccs.covici.com

Re: [gentoo-user] ls config file?

[Neil Bothwick]

On Tue, 2 Feb 2016 11:07:02 +, Andrew Tselischev wrote:

> I forgot to mention, that if you seriously want to take that approach,
> you'd need to mirror coreutils' ebuilds in your own portage overlay. The
> changes to the ebuild (and Manifest) will get overwritten next time you
> sync the tree.
> 

There's no need for that. Just create /etc/env/portage/sys-apps/coreutils
containing

post_src_unpack() {
cd "${S}"
epatch_user
}


-- 
Neil Bothwick

WinErr 001: Windows loaded - System in danger


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Description: OpenPGP digital signature

Re: [gentoo-user] ls config file?

[Raffaele BELARDI]

Andrew Tselischev wrote:
> On Tue, Feb 02, 2016 at 09:54:37AM +0100, Raffaele BELARDI wrote:
>> The option that controls this is --quoting-style, so
>> --quoting-style=literal returns to the old behaviour (which I prefer). I
>> can alias 'ls' to include this option but was wondering if there is a
>> global configuration file controlling such behaviour.
>
> There is no configuration file for ls(1), but we can still solve the
> problem. It is free software, after all!
>
> Put the file fix.patch in /etc/portage/patches/sys-apps/coreutils-8.25/
> and apply the following changes to the ebuild (in the function src_prepare):
>

fantastic!

but I think I'll stick with the alias approach ;-)

raffaele

[gentoo-user] Re: ls config file?

[Nikos Chantziaras]

On 02/02/16 10:54, Raffaele BELARDI wrote:

After a recent update of coreutils to version 8.25, 'ls -l' started
displaying names containing spaces enclosed in single quotes, e.g.:

drwxr-xr-x  6 belardi users 4096 May 21  2012 'Audio Libraries'
drwxr-xr-x  2 belardi users 4096 Jun 10  2014 Brochure

The option that controls this is --quoting-style, so
--quoting-style=literal returns to the old behaviour (which I prefer). I
can alias 'ls' to include this option but was wondering if there is a
global configuration file controlling such behaviour.


This is done with aliases. Actually, the "ls" command should by default 
be an alias. If you just enter:


  $ alias

you are shown current aliases. "ls" should actually be defined as:

  alias ls='ls --color=auto'

If you actually enter "/bin/ls", you'll see that by default ls doesn't 
even show colors. So Gentoo's default install provides an alias for that.


You can provide your own alias in /etc/bash/bashrc, which is sourced by 
all interactive shells.


All you need to do is provide your own alias. You can do that in your 
~/.bashrc file by adding this:


  alias ls="ls --color=auto --quoting-style=literal"

Logout and in again and you're done.

Re: [gentoo-user] ls config file?

[Neil Bothwick]

On Tue, 02 Feb 2016 06:55:31 -0500, cov...@ccs.covici.com wrote:

> > There's no need for that. Just
> > create /etc/env/portage/sys-apps/coreutils containing
> > 
> > post_src_unpack() {
> > cd "${S}"
> > epatch_user
> > }  
> 
> Is it not /etc/portage/env instead?

Of course it is. I was just checking if anyone was paying attention, as I
clearly was not.


-- 
Neil Bothwick

The best things in life are free, but the
expensive ones are still worth a look.


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Re: [gentoo-user] Re: Java 8 and remote access

[Thomas Sigurdsen]

On 02/02/2016 02:50 PM, Grant wrote:
 I need to run a Java 8 app remotely.  Can this be done on Gentoo?
>
>> Bummer.  FYI guys, Amazon Workspaces, Amazon Appstream, and Microsoft
>> Azure RemoteApp kinda work the way I've described but they all have
>> limitations which exclude them from working for me in this case.  It
>> looks like I'll be admin'ing another remote Gentoo system for this.
>>
> 
> 
> Do any cloud VM providers have Gentoo as an OS option?  If not, is there a
> good one that lets you install your own OS?
> 
> BTW since Java is a VM I'm surprised there is no service that lets you just
> upload a Java app and run it remotely on the service without any OS
> management.  Am I missing anything there?
> 
> - Grant
> 

linode.com and kimsufi.com lets you install gentoo. There might be many
more.

You might want to look into something like cfengine, puppet or chef to
lessen your workload of running multiple machines.

I've used linode for a couple years and its never been any problem, I do
see that I'm probably paying for more than I need, but that's another story.



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Re: [gentoo-user] [OT] Manipulating a mobile external harddisk

[Mick]

On Tuesday 02 Feb 2016 09:38:33 meino.cra...@gmx.de wrote:

> The harddisk in question is this little external
> USB hd, which is used for data storage only.
> It is by far no server disk or anything else
> high-end-24/7-thingy... ;)
> 
> Best regards,
> Meino

I was running a 350GB WD Passport plugged into an embedded SoC device, for 6 
years non-stop, except when power cuts caused the embedded device to 
stop/crash, or when I rebooted it (less than a dozen times a year).  When it 
died on me I replaced it with another WD Passport, this time 1TB.  It's been 
running for 1.5 years so far.  I have never interfered with whatever its own 
USB controller wants to do with its spin cycles.  I never saw a reason to.
-- 
Regards,
Mick

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Description: This is a digitally signed message part.

[gentoo-user] Re: Switching current java-vm for a single application

[Jörg Schaible]

Hi Leonard,

Leonardo Guilherme wrote:

> Hello.
> 
> I'm using OpenJDK JVM regularly on my machine instead of Oracle's one,
> primarily because of the infinality patches and because I prefer open
> source software.
> 
> There are some applications, though, that do not play ball with it
> (namely, SenchaCmd) and I have to keep switching back and forth between
> installed java-vms just to run it.
> 
> I know nothing about Java or its environment, is there a way to specify
> the java-vm just for this application instead of doing "eselect java-vm
> set user 1; sencha *stuff*; eselect java-vm set user 3" everytime?
> 
> Is there a set of environment variables that can do this? Shall I wrap the
> command in a shell script? Ideas?

Either the application uses already a script to start and you can modify 
JAVA_HOME there or you may wrap it in a shell script. Simply set JAVA_HOME 
using Gentoo's java-config command:

= %< ==
#! /bin/bash
JAVA_HOME=`java-config --select-vm=oracle-jdk-bin-1.8 -o` command
= %< ==

The option -o prints the JRE home, see the --help option to see 
alternatives.

The selection name is the name used in eselect, so you may update the 
package without touching the script.

Cheers,
Jörg

Re: [gentoo-user] Record sizes of directories of a directory tree (huge) most efficiently

[Frank Steinmetzger]

On Wed, Jan 27, 2016 at 05:25:37PM +0100, meino.cra...@gmx.de wrote:
> Hi,
>
> I want to determine the size of the contents of all directories of a
> tree of directories on a hexacore AMD64 machine with 4GB RAM an one
> harddisk (containing that tree) -- most efficiently (least time
> consuming).

A bit late to the game, but here is my way for this.
For a one-off thing, I use the already-mentioned excellent ncdu, which
provides vi-style navigation and even offers interactive deletion.

du is a viable option for quick use on smaller lists. But when it comes down
to actual comparable lists to be stored and archived, I like to use tree. In
particular, I use it to store lists of content of my external harddisks, so
I can find out what I stored where without having to turn the disks on,
including used disk space.

For that purpose, I use two different outputs. One paints the tree as such
using ascii art, showing the size next to the indented name:
tree -ax -n --du -h --dirsfirst

The other one is a tabular format that is easier to look at in long lists,
because it aligns size and date and prints the whole path, which also makes
it easier to diff:
tree -afx -DFins --dirsfirst --du --timefmt "%F %T"

Tata
-- 
Gruß | Greetings | Qapla’
Please do not share anything from, with or about me on any social network.

I had a problem and used Java. Now I have a ProblemFactory.


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Re: [gentoo-user] Record sizes of directories of a directory tree (huge) most efficiently

[Dale]

Frank Steinmetzger wrote:
> On Wed, Jan 27, 2016 at 05:25:37PM +0100, meino.cra...@gmx.de wrote:
>> Hi,
>>
>> I want to determine the size of the contents of all directories of a
>> tree of directories on a hexacore AMD64 machine with 4GB RAM an one
>> harddisk (containing that tree) -- most efficiently (least time
>> consuming).
> A bit late to the game, but here is my way for this.
> For a one-off thing, I use the already-mentioned excellent ncdu, which
> provides vi-style navigation and even offers interactive deletion.
>
> du is a viable option for quick use on smaller lists. But when it comes down
> to actual comparable lists to be stored and archived, I like to use tree. In
> particular, I use it to store lists of content of my external harddisks, so
> I can find out what I stored where without having to turn the disks on,
> including used disk space.
>
> For that purpose, I use two different outputs. One paints the tree as such
> using ascii art, showing the size next to the indented name:
> tree -ax -n --du -h --dirsfirst
>
> The other one is a tabular format that is easier to look at in long lists,
> because it aligns size and date and prints the whole path, which also makes
> it easier to diff:
> tree -afx -DFins --dirsfirst --du --timefmt "%F %T"
>
> Tata


Have you seen this tool?

sys-fs/treesize 

It seems to be a tool more along the lines of what you are doing.  I
just noticed it in portage myself and thought it may be something that
would interest you.  I might add, there are other tree variations on
this too.  You may find eix tree interesting to look at. 

Dale

:-)  :-)