[gentoo-user] How do I get rid of colors (console and xterm)?

[gentoo-user] How do I get rid of colors (console and xterm)?

[Christian Groessler]

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Hi,

I'm new here. My question is how do I get rid of colors in "emerge", 
"man" and other command line programs. I managed to do in the shell 
(bash), but I'm somehow lost how to change it elsewhere. In "vi" I know 
of "syn off".

See attached a pic of an xterm window, which I cannot read easily. (I'm 
color-blind, so this might enhance the problem.)

regards,
chris



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Re: [gentoo-user] How do I get rid of colors (console and xterm)?

[Ralph Seichter]

* Christian Groessler:

> My question is how do I get rid of colors in "emerge", "man" and other
> command line programs.

The methods vary between command line tools.  You can for example
disable the 'manpager' USE flag for sys-apps/man-db. The manual page for
emerge mentions different methods (search for "--color"). Depending on
the terminal software you use, you might be able to select monochromatic
colour profiles (iterm2 for macOS does support this).

-Ralph

Re: [gentoo-user] How do I get rid of colors (console and xterm)?

[Christian Groessler]

Thanks Ralph.

In the meanwhile I had found out the "NOCOLORS" setting in make.conf 
which works for "emerge".

man pages in color are the other most important problem right now. I 
will check out your suggestion.

regards,
chris

On 7/4/19 9:19 PM, Ralph Seichter wrote:
> * Christian Groessler:
>
>> My question is how do I get rid of colors in "emerge", "man" and other
>> command line programs.
> The methods vary between command line tools.  You can for example
> disable the 'manpager' USE flag for sys-apps/man-db. The manual page for
> emerge mentions different methods (search for "--color"). Depending on
> the terminal software you use, you might be able to select monochromatic
> colour profiles (iterm2 for macOS does support this).
>
> -Ralph
>

Re: [gentoo-user] How do I get rid of colors (console and xterm)?

[David Haller]

Hello,

On Thu, 04 Jul 2019, Christian Groessler wrote:
>On 7/4/19 9:19 PM, Ralph Seichter wrote:
>> * Christian Groessler:
>> > My question is how do I get rid of colors in "emerge", "man" and other
>> > command line programs.
>> The methods vary between command line tools.  You can for example
>> disable the 'manpager' USE flag for sys-apps/man-db. The manual page for
>> emerge mentions different methods (search for "--color"). Depending on
>> the terminal software you use, you might be able to select monochromatic
>> colour profiles (iterm2 for macOS does support this).
>
>In the meanwhile I had found out the "NOCOLORS" setting in make.conf which
>works for "emerge".

Your term looks rather low contrast with that rather bright dark
greenish background... I use 'grey5' ;)

You can also adjust the colours see 'man 5 color.map' and
/etc/portage/color.map.

And/or even patch emerge's output routines (I think there's some stuff
that has no variable in color.map, and which is hard to read on
grey5). I use this:

====
/etc/portage/patches/sys-apps/portage/portage_output_colors-2.3.44.patch
====
diff -x '*~' -purN a/lib/portage/output.py b/lib/portage/output.py
--- a/lib/portage/output.py     2017-12-16 01:48:01.000000000 +0100
+++ b/lib/portage/output.py     2017-12-16 05:54:28.701929379 +0100
@@ -100,8 +115,8 @@ codes["darkgreen"] = codes["0x00AA00"]
 codes["yellow"]    = codes["0xFFFF55"]
 codes["brown"]     = codes["0xAA5500"]

-codes["blue"]      = codes["0x5555FF"]
-codes["darkblue"]  = codes["0x0000AA"]
+codes["blue"]      = esc_seq + "36;1m" # codes["0x5555FF"]
+codes["darkblue"]  = esc_seq + "36m" # codes["0x0000AA"]

 codes["fuchsia"]   = codes["0xFF55FF"]
 codes["purple"]    = codes["0xAA00AA"]
====

>man pages in color are the other most important problem right now. I will
>check out your suggestion.

AFAIK that mostly depends on what you use as pager for man, e.g. less.

====
   Controlling formatted output
       -P pager, --pager=pager
              Specify  which  output  pager to use.  By default, man uses less
              -s.  This option overrides the $MANPAGER  environment  variable,
              which  in turn overrides the $PAGER environment variable.  It is
              not used in conjunction with -f or -k.
====

So, have a look at the MANPAGER and PAGER variables if they're set. If
they are, have a look at the config of that pager, else at that of
'less(1)'. Oh, and have a look at your terminal options. E.g. use
'xterm -cm' instead of 'xterm'... (or set the according Xresource) and
all you get is black & white ;)

HTH,
-dnh

-- 
# Mmm, yesssss.  cookies my preciousssss!  Mmm, yes downloads it
# is!  We mustn't have nasty little gmakeses deleting our
# precious cookieses now must we?    -- gar.lib.mk of 'konstruct'

Re: [gentoo-user] How do I get rid of colors (console and xterm)?

[Grant Taylor]

On 7/4/19 1:10 PM, Christian Groessler wrote:
> Hi,

Hi,

> I'm new here. My question is how do I get rid of colors in "emerge", 
> "man" and other command line programs. I managed to do in the shell 
> (bash), but I'm somehow lost how to change it elsewhere. In "vi" I know 
> of "syn off".

Try changing your terminal type (TERM environment variable) to something 
that doesn't support color.  I'd suggest VT100.

Try the following in a terminal session and see if that helps.

    export TERM=vt100

> See attached a pic of an xterm window, which I cannot read easily. (I'm 
> color-blind, so this might enhance the problem.)

You can also redefine the colors in XTerm so that anything that thinks 
it's using a given color number is actually using whatever RGB value you 
set.  Thus you can alter the colors to whatever you want.



-- 
Grant. . . .
unix || die

Re: [gentoo-user] How do I get rid of colors (console and xterm)?

[wiicontroller]

XTerm also includes a -cm option (colorMode resource) for ignoring control 
sequences that affect color.

[gentoo-user] Re: How do I get rid of colors (console and xterm)?

[Nikos Chantziaras]

On 04/07/2019 22:10, Christian Groessler wrote:
> I'm new here. My question is how do I get rid of colors in "emerge", 
> "man" and other command line programs.

Do you want to disable colors for everything, or only for specific tools?

Re: [gentoo-user] Re: How do I get rid of colors (console and xterm)?

[Christian Groessler]

On 7/5/19 8:50 PM, Nikos Chantziaras wrote:
> On 04/07/2019 22:10, Christian Groessler wrote:
>> I'm new here. My question is how do I get rid of colors in "emerge", 
>> "man" and other command line programs.
>
> Do you want to disable colors for everything, or only for specific tools?


Ideally for everything inside an xterm or console screen. I'm going to 
try "-cm" for xterm. Thanks David (in a previous post) for the suggestion.

regards,
chris

Re: [gentoo-user] Re: How do I get rid of colors (console and xterm)?

[Grant Taylor]

On 7/8/19 2:18 AM, Christian Groessler wrote:
> Ideally for everything inside an xterm or console screen. I'm going to 
> try "-cm" for xterm. Thanks David (in a previous post) for the suggestion.

If the -cm command line option does what you want, you can easily add 
the following to the ~/.Xdefaults file, reread it, and be good to go.

xterm.vt100*colorMode: false

Reread the file via "xrdb ~/.Xdefaults" or logout & back in.



-- 
Grant. . . .
unix || die

Re: [gentoo-user] Re: How do I get rid of colors (console and xterm)?

[Christian Groessler]

On 7/8/19 10:18 AM, Christian Groessler wrote:
> On 7/5/19 8:50 PM, Nikos Chantziaras wrote:
>> On 04/07/2019 22:10, Christian Groessler wrote:
>>> I'm new here. My question is how do I get rid of colors in "emerge", 
>>> "man" and other command line programs.
>>
>> Do you want to disable colors for everything, or only for specific 
>> tools?
>
>
> Ideally for everything inside an xterm or console screen. I'm going to 
> try "-cm" for xterm. Thanks David (in a previous post) for the 
> suggestion.


"-cm" works fine, thanks. Console is not that important since I'm rarely 
sitting there.

regards,
chris