[SLUG] Handy CLI tool configuration trick

2004-01-07 Thread Jeff Waugh
Hi all,

Ben -> the easiest way to kick off some high powered kickarse sharing action
is to get in first. ;-) Here's one of my favourite little unobvious handy
tricks:

Everyone knows the way to start a shell script -> you put in a 'bang path'
to the shell that you want to run your script, like this:

  #!/bin/sh
  echo You ran this script with these parameters:
  echo "  $@"

But what does it actually do? Simple answer: When you execute the script (it
must have the +x bits on), the contents of the file are piped into the bang
path program, in this case, /bin/sh. So, let's put just the last two lines
of the above script into a file ('test'), and try to get sh to run it from
stdin:

  $ cat test | /bin/sh -s
  You ran this script with these parameters:

Or:

  $ cat test | /bin/sh -s pants
  You ran this script with these parameters:
pants

So, why is this cool? It means that *any program* that can take its config
or some kind of scripting from a file can be used this way -> because stdin
is (basically) a file!

Try putting this in a file, and setting the +x bit:

  #!/usr/bin/screen -c
  startup_message on
  hardstatus on
  hardstatus alwayslastline
  hardstatus string "%H %=%{..} %d/%m %C%a "

When you run it, screen will run with that configuration! My normal screenrc
settings have a blue status line, have the startup_message switched off, etc
-> but not when I run this script. :-)

Now... There are a *lot* of *nix command line tools that can take their conf
settings from a file specified on the command line. Such as mutt... vim...
So many cool things you can do, and you can just run a special command and
have them set up for special purposes. :-)

Enjoy, and post the cool stuff you do with this to the SLUG list. :-)

Thanks,

- Jeff

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Re: [SLUG] Weekly celebration of a Unix utility

2004-01-07 Thread Anthony Wood
On Thu, Jan 08, 2004 at 03:22:04PM +1100, DE LUCA Ben wrote:
> I was wondering if people would like to talk about some of the things that
> you might be able to do with some simple utilities that are included with
> most Linux distros.
> 
> I spent a few days over the holidays learning more about screen and I can
> say it was truly worth it. I was wondering if a few people might like to
> join me in discussing some of the cool things about a particular utility
> each week? 
> 
> There was some talk of screen earlier this week and I wondered if we might
> like to talk about some of the cool functions or even bad ones for the rest
> of the week!

Screen is very worthy, but pipe is da bomb! (Pipe-Bomb?)

cat Zechariah\ Vulgate.txt | perl -lane'print "lynx -source 
http://www.perseus.tufts.edu/cgi-bin/morphindex?lang=la\\&embed=2\\&lookup=$F[$_] | 
grep \\ | perl -pe \"s\/\\<.*?\\>\/;\/g; print qq[$F[0].$_;$F[$_];];\"" foreach 
1..$#F' | sh | cut '-d;' -f1,2,8,13 | perl -nle'my ($vw,$mw,$dw,$dd) = split(/\;/); 
$dd =~ s/^Entry in $//;$dd &&= " \"$dd\"";print qq[$vw $mw : $dw$dd]'

This little beauty took the Latin words from the Vulgate version of the book of 
Zechariah (Old Testament), plugged them into a webpage which gave the alternate 
meanings, ripped out the meanings and re-formatted them into one Latin word and 
alternate meaning per line, so my friend (PHD at Sydney Uni) could remove the wrong 
meanings and have a word for word translation.

Pipe lets you build up programs on the command line, tie together simple tools 
(grep/cut/sed/awk/lynx/wget/sh/perl/convert) and see how you are going.  I 
particularly like getting perl to print out commands which I pipe to sh.

If you want to get started, try:

a one-liner which sets todays dilbert comic as your background image in x.
splitting a logfile into daily or hourly logfiles using grep, bc, head, tail

cheers,
Woody

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Re: [SLUG] Weekly celebration of a Unix utility

2004-01-07 Thread Michael Chesterton
DE LUCA Ben <[EMAIL PROTECTED]> writes:


> There was some talk of screen earlier this week and I wondered if we might
> like to talk about some of the cool functions or even bad ones for the rest
> of the week!

screen can be used as a login shell.
But scp didn't like it, bummer, I'm testing out putting "screen -xRR"
at the end of .bash_profile, I haven't noticed any problems yet.

-xRR is my favourite way of starting screen, 

-x   Attach to a not detached screen session. (Multi display mode).

-x is handy with working with someone remotely who is learning the
 ropes, the screen is mirrored, they see what you see and type, you
 see what they see and type.


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Re: [SLUG] Weekly celebration of a Unix utility

2004-01-07 Thread Jeff Waugh


> I tried to reply directly but apparently my company is filled with
> SPAMERS!

(Yes, I've seen this - Kevin's mail server does seem to reject a lot of
mail.)

- Jeff

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Re: [SLUG] Weekly celebration of a Unix utility

2004-01-07 Thread Peter Hardy
On Thu, 2004-01-08 at 16:15, DE LUCA Ben wrote:
> I was going to talk about screen this week.
> 
> One of the most useful things I think it can do is split a console up into
> two viewable/able editable areas  you can do this with the ctrl-S option!
> 
> Its great for watching a log whilst you do other things on the computer.

Just to continue my current obsession with obscure commands, did you
know you can also do this with splitvt? :-)

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Re: [SLUG] Question time & consulting

2004-01-07 Thread Jeff Waugh


> They should be made to understand you answer some questions on SLUG when
> you feel like it and there's no warranty implied.

Plus, it's a share-and-share-alike community that I have enjoyed nurturing
and being involved with for a long time. That counts waay more than Mister
Random Phone Caller. ;-)

- Jeff

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Re: [SLUG] Weekly celebration of a Unix utility

2004-01-07 Thread DE LUCA Ben
I was going to talk about screen this week.

One of the most useful things I think it can do is split a console up into
two viewable/able editable areas  you can do this with the ctrl-S option!

Its great for watching a log whilst you do other things on the computer.

> From: Stuart Cooper <[EMAIL PROTECTED]>
> Date: Thu, 8 Jan 2004 15:47:52 +1100 (EST)
> To: DE LUCA Ben <[EMAIL PROTECTED]>, [EMAIL PROTECTED]
> Subject: Re: [SLUG] Weekly celebration of a Unix utility
> 
>> I was wondering if people would like to talk about
>> some of the things that
>> you might be able to do with some simple utilities
>> that are included with
>> most Linux distros.
> 
> Quite often the Linux versions of Unix standard
> programs come from the GNU project and are completely
> packed with new and useful features. Two of my
> favourites:
> 
> 1) -h option (human readable) in df and du commands
> 2) less pager F option to go into "tail -f" mode of
>  a logfile you are looking at; which can then be
>  changed back to regular less with an interrupt key
> 
> Since so many Linux programs are so configurable and
> options-packed it's well worth the trouble of
> reading all about your favourites.
> 
> Stuart.
> 
> http://personals.yahoo.com.au - Yahoo! Personals
> New people, new possibilities. FREE for a limited time.
> 

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Re: [SLUG] Weekly celebration of a Unix utility

2004-01-07 Thread DE LUCA Ben
I tried to reply directly but apparently my company is filled with SPAMERS!

Um, I was thinking we might start with screen! its much more use than vi !


> From: Kevin Waterson <[EMAIL PROTECTED]>
> Organization: Oceania
> Date: Thu, 8 Jan 2004 15:22:36 +1100
> To: [EMAIL PROTECTED]
> Subject: Re: [SLUG] Weekly celebration of a Unix utility
> 
> This one time, at band camp, DE LUCA Ben <[EMAIL PROTECTED]> wrote:
> 
>> There was some talk of screen earlier this week and I wondered if we might
>> like to talk about some of the cool functions or even bad ones for the rest
>> of the week!
> 
> Sure, lets begin with VI :)
> 
> Kevin
> 
> 
> -- 
> __   
> (_ \ 
> _) )           
> |  /  / _  ) / _  | / ___) / _  )
> | |  ( (/ / ( ( | |( (___ ( (/ /
> |_|   \) \_||_| \) \)
> Kevin Waterson
> Port Macquarie, Australia
> -- 
> SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/
> Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
> 

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Re: [SLUG] Question time & consulting

2004-01-07 Thread Grant Parnell
On Thu, 8 Jan 2004, Jeff Waugh wrote:

> 
> 
> > Has anyone out there been receiving phone calls from external groups
> > asking for assistance on your knowledge? (saying "I saw some of your posts
> > on SLUG can you help me?") If you have, what do you do especially if you
> > are self employed?
> 
> Give them your rates? :-)
> 
> [ This has happened to me a number of times in the past, sometimes just
> being bothersome ("but your posts on SLUG are free!"), sometimes kicking off
> a good business relationship. For the record though, I'm not doing private
> consulting at the moment. :-) ]

Well I thought that yeah charging for the consulting would be obviously 
the go. In my opinion those that say "but you post to slug for free" and 
won't pay are going to be the difficult ones to extract money out of in 
the end. 

They should be made to understand you answer some questions on SLUG when
you feel like it and there's no warranty implied. If they want faster
service without having to work things out from the confusion of multiple
replies from people with varying expertise then they can pay for it. Same
deal getting the car fixed. You can buy all the tools, learn all the stuff
and do it yourself if you want. For that matter it's like any service
industry I guess.

I had hoped this sort of discussion would appear on the linux vendors 
mailing list. See http://lists.linux.org.au/listinfo/vendors for info.

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[SLUG] Automating Linux

2004-01-07 Thread Michael Kraus
G'day all...

There is a book with the above title... I'm quite curious to hear people's
reports on it...

Also, does anyone know of the author's name? I've forgotten where I first
saw the book, and am wanting to look for it in a bookstore...

Thanks heaps...

Mike

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[SLUG] Perl and CGI

2004-01-07 Thread Christopher Sarich
Hi there, I am looking for a  Perl and CGI web developer, Can you help 
me find someone ?
I am in sydney..
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Re: [SLUG] Weekly celebration of a Unix utility

2004-01-07 Thread Stuart Cooper
> I was wondering if people would like to talk about
> some of the things that
> you might be able to do with some simple utilities
> that are included with
> most Linux distros.
 
Quite often the Linux versions of Unix standard 
programs come from the GNU project and are completely 
packed with new and useful features. Two of my 
favourites:

1) -h option (human readable) in df and du commands
2) less pager F option to go into "tail -f" mode of
   a logfile you are looking at; which can then be
   changed back to regular less with an interrupt key

Since so many Linux programs are so configurable and
options-packed it's well worth the trouble of
reading all about your favourites.

Stuart.

http://personals.yahoo.com.au - Yahoo! Personals
New people, new possibilities. FREE for a limited time.
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Re: [SLUG] Weekly celebration of a Unix utility

2004-01-07 Thread Kevin Waterson
This one time, at band camp, DE LUCA Ben <[EMAIL PROTECTED]> wrote:

> There was some talk of screen earlier this week and I wondered if we might
> like to talk about some of the cool functions or even bad ones for the rest
> of the week!

Sure, lets begin with VI :)

Kevin


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(_ \ 
 _) )            
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Port Macquarie, Australia
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[SLUG] Weekly celebration of a Unix utility

2004-01-07 Thread DE LUCA Ben
I was wondering if people would like to talk about some of the things that
you might be able to do with some simple utilities that are included with
most Linux distros.

I spent a few days over the holidays learning more about screen and I can
say it was truly worth it. I was wondering if a few people might like to
join me in discussing some of the cool things about a particular utility
each week? 

There was some talk of screen earlier this week and I wondered if we might
like to talk about some of the cool functions or even bad ones for the rest
of the week!


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Re: [SLUG] LS_COLORS

2004-01-07 Thread Stuart Cooper
> Arrghhh this is driving me mad.
> I'm sure its something trivial but how does one
> switch ls colors off?
 
> I've got:
 
> Colors=none in /etc/DIR_COLORS
 
> $LS_COLORS=''
 
> But it still uses colors

unset LS_COLORS

type $ alias ls
and check that ls hasn't been aliased to some fancy
colouring thing
(a lot of Linux versions have
$ alias ls
alias ls='ls --color=tty')

unalias ls
will give you back the raw ls with no colouring

Stuart.



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Re: [SLUG] Question time

2004-01-07 Thread Jeff Waugh


> Has anyone out there been receiving phone calls from external groups
> asking for assistance on your knowledge? (saying "I saw some of your posts
> on SLUG can you help me?") If you have, what do you do especially if you
> are self employed?

Give them your rates? :-)

[ This has happened to me a number of times in the past, sometimes just
being bothersome ("but your posts on SLUG are free!"), sometimes kicking off
a good business relationship. For the record though, I'm not doing private
consulting at the moment. :-) ]

- Jeff

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   in a carnivorous way I like them, they are my favourite meats. When I
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[SLUG] LS_COLORS

2004-01-07 Thread Low Christopher - clow
Arrghhh this is driving me mad.
I'm sure its something trivial but how does one switch ls colors off?

I've got:

Colors=none in /etc/DIR_COLORS

$LS_COLORS=''

But it still uses colors

TIA

C.


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[SLUG] Question time

2004-01-07 Thread Kevin Saenz
Hi all,

Has anyone out there been receiving phone calls from external groups
asking for assistance on your knowledge? (saying "I saw some of your
posts on SLUG can you help me?") If you have, what do you do especially
if you are self employed?

Thanks

Kevin

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Re: [SLUG] What minimal GTK+ package is required for gconfig in 'make gconfig'

2004-01-07 Thread Jeff Waugh


> I have juts installed libgtk2.0-0 but that didnt provide me with what was
> needed. Maybe its libgtk20-dev but thats 30MB to download via a dialup.
> Surely make gconfig does not need a development suite - just the shared
> libs ??
> 
> Whats the minimum i need.???

To build stuff, you need the -dev packages. They include all the headers and
such that you require. That ends up being quite a lot of stuff. :-)

(make menuconfig is better anyway.)

- Jeff

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[SLUG] Mandrake and kernel upgrade to 2.4.24

2004-01-07 Thread Kevin Saenz
Hi all,
I have just installed kernel 2.4.24 on my mandrake box.
I found an issues with the reiserfs formatted drives.
The kicker is that I can't load the system unless I
commit to a fs fsck with rebuild option. Has anyone
come across this issue? What did you do?




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Re: [SLUG] RPMs-please help

2004-01-07 Thread David Gillies
Kazik Malenczak wrote:

Someone please help
I have a large collection of RPMs I've amassed over time and I would like to
know how I build a hdlist.
I think 'genhdlist' is the appropriate command for building a hdlist.

Possibly this howto could help you out:

http://www.linuxworks.com.au/redhat-installer-howto.html

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[SLUG] What minimal GTK+ package is required for gconfig in 'make gconfig'

2004-01-07 Thread Michael Lake
Hi all,

I am compiling 2.6 kernel but it no longer supports 'make xconfig' for 
Tk, i have to use make gconfig which uses GTK+
(there is alos a QT one as well)

[EMAIL PROTECTED]:/usr/src/2.5-benh$ make gconfig
make[1]: `scripts/fixdep' is up to date.
/bin/sh: line 1: pkg-config: command not found
*
* Unable to find the GTK+ installation. Please make sure that
* the GTK+ 2.0 development package is correctly installed...
* You need gtk+-2.0, glib-2.0 and libglade-2.0.
*
make[1]: *** [scripts/kconfig/.tmp_gtkcheck] Error 1
make: *** [gconfig] Error 2
[EMAIL PROTECTED]:/usr/src/2.5-benh$
I have juts installed libgtk2.0-0 but that didnt provide me with what 
was needed. Maybe its libgtk20-dev but thats 30MB to download via a 
dialup. Surely make gconfig does not need a development suite - just the 
shared libs ??

Whats the minimum i need.???

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[SLUG] FW: RPMs-please help

2004-01-07 Thread Kazik Malenczak


Someone please help
I have a large collection of RPMs I've amassed over time and I would like to
know how I build a hdlist.  Also I would appreciate it if someone could
explain the difference
between hdlist and synthesis.hdlist and what the .cz extension denotes.  Any
pointers to a good online explaination would make me very grateful.
Many thanks

Kaz Malenczak


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Re: [SLUG] Fedora

2004-01-07 Thread Mike MacCana
On Wed, 7 Jan 2004, billb wrote:

> Have downloaded the 3 Fedora iso's and tried to install. Always fails at
> 3rd CD with message "unable to find install img /tmp/cdrom".
>
> Have downloaded iso number 3 3 times, and have burned it to 2 different
> 700mb cdrws. Checksums are correct and I can read the cdrw and have in fact
> copied the contents of the RPM directory to hard disk OK.
>
> Any help appreciated.

Well, if the checksums are correct, the disks should be ok. To be
paranoid, maybe try 'linux mediacheck' after booting from Fedora CD 1.

> I am still trying to figure out ie how to access the
> Fedora RPMs, either from CD or hard disk, using Synaptic.

I think apt now has file:/// URLs you can specify in sources.list.d (or
sources.list) which you can use for this purpose.

Mike

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Re: [SLUG] screen(1) lovers anonymous

2004-01-07 Thread Rob B
Jeff Waugh wrote:
Here's a cool feature that I've added to all of my ~/.screenrc files now:

hardstatus on
hardstatus alwayslastline
hardstatus string "%{.bW}%-w%{.rW}%n %t%{-}%+w %=%{..G} %H %{..Y} %d/%m %C%a"
It creates a status bar that has tab-like thingies which looks like this:

  http://www.gnome.org/~jdub/random/screen-love.png
Very cool!

For something even more geeky try putting wormulon 
(http://raisdorf.net/projects/wormulon) in the hardstatus line as well :)

cheers,
rob
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Re: [SLUG] screen(1) lovers anonymous

2004-01-07 Thread Benno
On Wed Jan 07, 2004 at 22:29:48 +1100, Anthony Rumble wrote:
>On Wed, 7 Jan 2004, Benno wrote:
>
>> Neat! Now if I can just work out how to scroll in screen. (I'm I knew
>> once but each time I look at the help screen i can't work it out.)
>
>Ctrl-A then  then use VI cursor keys..
>
> again to exit
>
>Been using Screen since like 1990 or something..
>

Ahhh because to scroll you go into copy mode. Cool!

Benno

P.S. If you love screen(1) you'll lurve ratpoison :)
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Re: [SLUG] screen(1) lovers anonymous

2004-01-07 Thread Anthony Rumble
On Wed, 7 Jan 2004, Benno wrote:

> Neat! Now if I can just work out how to scroll in screen. (I'm I knew
> once but each time I look at the help screen i can't work it out.)

Ctrl-A then  then use VI cursor keys..

 again to exit

Been using Screen since like 1990 or something..

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[SLUG] Linux tafe /Courses/

2004-01-07 Thread Geoffrey Robertson

Umm, that should be probably be TAFE Courses and not TAFE Curses.  But
come to think about it...

g
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[SLUG] Linux tafe curses

2004-01-07 Thread Geoffrey Robertson

Hi all,

http://slug.org.au/training.html
has been updated to reflect the Linux courses run at Granville
tafe this year. 
 
Course organization is at:
http://gonzo.org.au

Course documentation in CVS at:
http://lcdp.sf.net

Geoffrey Robertson, Andy Eager and Gus Lees will be teaching Linux 
introductory and certification courses.  LPI Cert. Level 2
will be running for the first time.

These classes are inexpensive and a little crowded but all are welcome.

Those interested should email Geoffrey direct. [EMAIL PROTECTED]

tnx,
Geoffrey 
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Re: [SLUG] screen(1) lovers anonymous

2004-01-07 Thread Benno
On Wed Jan 07, 2004 at 21:21:03 +1100, Jeff Waugh wrote:
>Hey,
>
>So, I found out this cool thing about screen today. While I use screen every
>day, in almost every interaction with my main terminals and on servers, I am
>obviously not a screen poweruser and being of pure energy yet. Here's a cool
>feature that I've added to all of my ~/.screenrc files now:
>
>hardstatus on
>hardstatus alwayslastline
>hardstatus string "%{.bW}%-w%{.rW}%n %t%{-}%+w %=%{..G} %H %{..Y} %d/%m %C%a"
>
>It creates a status bar that has tab-like thingies which looks like this:
>
>  http://www.gnome.org/~jdub/random/screen-love.png
>
>Awesome!

Neat! Now if I can just work out how to scroll in screen. (I'm I knew
once but each time I look at the help screen i can't work it out.)

Benno
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[SLUG] screen(1) lovers anonymous

2004-01-07 Thread Jeff Waugh
Hey,

So, I found out this cool thing about screen today. While I use screen every
day, in almost every interaction with my main terminals and on servers, I am
obviously not a screen poweruser and being of pure energy yet. Here's a cool
feature that I've added to all of my ~/.screenrc files now:

hardstatus on
hardstatus alwayslastline
hardstatus string "%{.bW}%-w%{.rW}%n %t%{-}%+w %=%{..G} %H %{..Y} %d/%m %C%a"

It creates a status bar that has tab-like thingies which looks like this:

  http://www.gnome.org/~jdub/random/screen-love.png

Awesome!

- Jeff

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Re: [SLUG] ssh over ADSL weeirdness

2004-01-07 Thread Grant Parnell
On Tue, 6 Jan 2004, Gottfried Szing wrote:

> hi,
> 
> > Also... what if there's a multi-path route and the packets are going both 
> > ways, one might be delayed sufficiently to not be picked up as a 
> > duplicate... but then again the TCP protocols should take care of this ... 
> > that's what sequence numbers are for.
> 
> and thats also confusing me. but if (just a stupid and assumption, that 
> this does not work) the tcp is not handling the duplicates which can be 
> cause by retransmissions aso, should not the SSH protocol take care of 
> the integrity of the data flow? SSH is standing for secure, but shouldnt 
> it also check if the data is correct?

Yeah that's what I meant by 'the tcp protocols should take care of this'. 
Anyway... since then he's worked out it's at a higher level, ie works just 
fine from the text console.

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