It is possible to use colors on the Unix command-line interface.

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96
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13answers
39k views

How to have tail -f show colored output

I'd like to be able to tail the output of a server log file that has messages like: INFO SEVERE etc, and if it's SEVERE, show the line in red; if it's INFO, in green. What kind of alias can I ...
19
votes
5answers
9k views

Removing control chars (including console codes / colours) from script output

I can use the "script" command to record an interactive session at the command line. However, this includes all control characters and colour codes. I can remove control characters (like backspace) ...
66
votes
2answers
38k views

Getting 256 colors to work in tmux

I have 256 colors working just fine in konsole,. I thought I'd give tmux a try because, unlike screen, it seems to support vi mode. However I find that the colors of my prompt show up and this is ...
35
votes
6answers
4k views

Can I configure my shell to print STDERR and STDOUT in different colors?

I want to set my terminal up so stderr is printed in a different color than stdout; maybe red. This would make it easier to tell the two apart. Is there a way to configure this in .bashrc? If not, is ...
20
votes
2answers
13k views

How to colorize output of ls ?

I'm running CentOS in Linux text mode. When I run the command ls /usr/, the output is too hard to read (dark blue on black). How can I change the text coloring?
79
votes
8answers
93k views

Colorizing your terminal and shell environment?

I spend most of my time working in Unix environments and using terminal emulators. I try to use color on the command-lin, because color makes the output more useful and intuitive. What are some good ...
26
votes
3answers
5k views

Colors in Man Pages

When I look at a man page in my 'console' (not an xterm) I see some coloration, but I don't get this in my xterm's (e.g. konsole) is there any way I can enable this? hopefully a fairly simple ...
6
votes
2answers
2k views

Can I set my local machine's terminal colors to use those of the machine I ssh into?

I have a color scheme that I like for when I'm in a terminal, but I ssh into the machine I work on from multiple sources (locally, PuTTY, my netbook, etc.) and I want to maintain the same color scheme ...
30
votes
6answers
8k views

Program that passes STDIN to STDOUT with color codes stripped?

I have a command that produces output in color, and I would like to pipe it into a file with the color codes stripped out. Is there a command that works like cat except that it strips color codes? I ...
18
votes
6answers
7k views

How to check if bash can print colors

I want to know if there's any way to check if my program can output terminal output using colors or not. Running commands like less and looking at the output from a program that outputs using ...
10
votes
2answers
9k views

What causes this green background in ls output?

There are two directories shown by 'ls'. Normally directories anywhere are blue on black background. But the first one is blue on green and impossible to read. Why is this? How to make it blue ...
3
votes
1answer
65 views

Fine-tune LS_COLORS for directory suffixes?

I’m fine customizing most settings in LS_COLORS. I don’t need help customizing the colors for different file suffixes. What I would like to do is configure special colors for certain directories, ...
13
votes
2answers
5k views

tmux, TERM and 256 colours support

Introduction My question arises from the necessity of understanding why I have now (after multiple trials) Terminal and tmux supporting 256 colours and tput colors telling me there are only 8 of ...
8
votes
1answer
552 views

Documentation on LESS_TERMCAP_* variables?

I see these pretty colors in manpages viewed with less when setting a bunch of these variables. What do they mean, where is the documentation? Is this interpreted by less or termcap? screenshot
12
votes
1answer
1k views

Invert colors of the active window

Sometimes I work in low light and I need to invert the color of specific windows to reduce my eye strain. This could be my pdf viewer to web pages for reference work. I know how to invert the entire ...
11
votes
1answer
22k views

Where to get Kate color schemes?

Does anyone know where one could find some good Kate color schemes for syntax highlighting? The only ones that I found that work fine are zenburn and mdark. Besides those two, I couldn't find ...
6
votes
4answers
2k views

Colored FIND output?

Is it possible to get colored output from the find command? That is, in the path of each found item, directories are blue, executable scripts are green, et cetera? I'm using version 4.4.2 of GNU ...
6
votes
1answer
1k views

Customizing bash shell: Bold/color the command

There are a number of tutorials/posts online (e.g. http://www.cyberciti.biz/faq/bash-shell-change-the-color-of-my-shell-prompt-under-linux-or-unix/) about how to customize your prompt in bash by ...
8
votes
2answers
2k views

Testing LS_COLORS in zsh

A few years ago I found an interesting code snippet that prints each type of file in its corresponding color according to the colors set up in LS_COLORS. Unfortunately, I can't remember the link ...
8
votes
5answers
2k views

`highlight` command

Is there a command which can be used to easily highlight (with colors, bold text or inverted back-/foreground) specific strings in stdin while passing the entire string to stdout? I'm thinking of ...
3
votes
2answers
2k views

256 color in real console

I have in my .bashrc export TERM=xterm-256color but this cause blinking all colored text (ls --color, in vim etc.) in real console (CTRL + ALT + F1) . So is there any possibility to recognize in ...
8
votes
3answers
1k views

What color codes can I use in my PS1 prompt?

I used several colors in my PS1 prompt such as \033]01;31\] # pink \033]00m\] # white \033]01;36\] # bold green \033]02;36\] # green \033]01;34\] # blue \033]01;33\] # bold yellow Where can I ...
8
votes
3answers
2k views

Change the PS1 color based on the background color?

I learned that I can change the format of PS1, especially the color of the string. Then, is it possible to change the color based on the background color of the shell? Or, how can I detect the ...
7
votes
2answers
3k views

16 Colors in ZShell

I only seem to be able to call 8 colors in my zshell prompt. Example: PROMPT="[%n@%{$fg[magenta]%}%m%{$reset_color%} %.] %# " Works fine. However, ...
5
votes
1answer
762 views

Non-printable-ASCII characters in sshd banner

It's possible to configure a banner for sshd that is to be displayed as a connection is opened, via Banner /etc/motd.ssh in sshd_config. Note that this is displayed before the authentication occurs, ...
65
votes
3answers
17k views

Can less retain colored output?

Can I get less not to monochrome its output? E.g., the output from git diff is colored, but git diff | less is not.
14
votes
2answers
702 views

Can the empty spaces/background in a terminal be replaced with a random(but pretty) pattern of ASCII characters?

Context and Question There are many ways to colorize the terminal and shell environment. The output of individual commands, such as ls and grep, can also be colorized. Not directly related but ...
13
votes
2answers
9k views

tmux bottom bar color change

I recently started to use tmux and like it much, but it's green bottom bar is a bit distracting, is there a way to change its color? or a way to hide it?
21
votes
4answers
6k views

How can you change the GNU screen status line based on hostname?

I have a shared home directory that is automounted via NFS on all the UNIX servers I log in to. I would like to have a single .screenrc that (for example) puts the hostname in the hardstatus line in a ...
19
votes
3answers
19k views

CLICOLOR and LS_COLORS in bash

I have the following setup in .bashrc for coloring of listings. export CLICOLOR=1 export ...
12
votes
4answers
4k views

Converting colored output into html

There are tools providing coloured output: dwdiff -c File1 File2 # word level diff grep --color=always # we all know this guy ... The question is: How to convert their colored output of arbitrary ...
12
votes
2answers
2k views

Where do my ANSI escape codes go when I pipe to another process? Can I keep them?

I sometime want to pipe the color-coded output fror a process, eg. grep... but when I pipe it to another process, eg. sed, the color codes are lost... Is the some way to keep thes codes intact ? ...
5
votes
2answers
4k views

xterm colors are too bright

I've just started using dwm a couple days ago and I'm using xterm (uxterm) as a terminal emulator. However, I'm noticing that certain applications (like vi/vim, ls, and others) that output in color ...
6
votes
2answers
409 views

Using empty line as context “group-separator” for grep

I need grep output with context, in color, and blank lines as group separator. In this question, I learned how to define custom group-separator, and I have constructed my grep command like this: grep ...
4
votes
1answer
692 views

Is there a way to temporarily change the terminal colour?

I use the gnome-terminal and most of my editors with a white on black theme as I find its easier on the eyes. One of my labs requires screenshots of the terminal (with the process) to be submitted ...
1
vote
2answers
7k views

Colorful ssh banner

I would like to colorize my ssh banner. I know I can perform it like so: In /etc/profile I can put: echo -e "\e[1;31m Colorful text" echo -e "\e[0m Reset" But I have some ASCII art in the banner ...
8
votes
2answers
3k views

How to colorize text in emacs?

I want to view (and/or edit) colorized text in emacs, such as is output by ls -l --color=always, tree..., or whatever. The text I refer to exists in a file. When I open that file in emacs, I want to ...
6
votes
1answer
1k views

tmux, Vim and Solarized

Premises Browsing around tmux, Vim and Solarized I can find lots of complains about 256 colours and "user experience". Well, I'm having the opposite "problem", i.e. Vim works well with a full ...
6
votes
1answer
3k views

Color calibration on Linux Mint

I'm running Linux Mint 9. I installed Argyll and gnome-color-manager but neither of those have a GUI. I need to configure my monitor colors. Right now the white looks a little yellow etc. and I want ...
5
votes
2answers
2k views

how to make XTerm never use bold characters?

I am trying to make XTerm to never use a bold font, and nothing seems to work. I put settings in ~/.Xresources and then run xrdb ~/.Xresources and then start a new XTerm. This is what I try: ...
12
votes
1answer
4k views

How can I simply adjust monitor color temperture in X?

I have a new 27" iMac, on which I run Fedora 15 (with no Apple OS) — just boot straight to Linux. The colors are basically accurate to my eye, but the white point is much higher than I'd like (that ...
5
votes
3answers
194 views

Coloring output of forked processes

I have a runscript that starts some processes and sends them to the background mongod & pid_mongo=$! redis-server & pid_redis=$! # etc. All these processes then output concurrently to ...
5
votes
1answer
982 views

Is it possible to use named colors in Zsh beyond ANSI names?

I know there are ways to use ANSI color names in Zsh (such as red), but Zsh supports 256 colors by number. I'm curious if there's any way to refer to the non-ANSI colors by a name? (Without just ...
4
votes
3answers
391 views

cascaded grep matches color code as pattern

I am piping output of one grep comand into another grep. The first grep is using --color=always, so that the first match is colored. In practice, that means that the match is enclosed between two ...
3
votes
2answers
450 views

Print console colors

Wrote a bash function to display the console colors. But, it seems some of the colors are not possible to show that way! (?) Also, note the strange "bright black"! (Note: The below screendump is of ...
1
vote
4answers
256 views

How to change color of a character while tailing and tr

I regularly use this command line but I would like to change the color of the "|" to green in the output. Does anyone know how I can accomplish this? tail -f file.log | tr '\001' '|' | grep TEST
1
vote
1answer
195 views

bash prompt - long command circle back to same line after adding color

Note: I am using Putty and my TERM is set to XTERM. I have added the color to my bash prompt as PS1="\[\033[0;32m\]\d \t \u\e[1;33m@\H /\W $ \[\033[1;37m\]" just to simplify PS1 in English - ...
7
votes
1answer
417 views

How do I use colors in the MOTD?

I edited the default /etc/update-motd.d/00-header, adding some color to make it easier to read: printf "Welcome to \e[1;34m%s\e[0m \e[2m(%s %s %s)\e[0m\n" "$DISTRIB_DESCRIPTION" "$(uname -o)" ...
7
votes
1answer
1k views

How can I list the available color names?

I'm trying to add some color to my git configuration and I want to know what color names are available on the terminal. I only want to use colors by name so it's easier for others to understand I ...
5
votes
1answer
124 views

How to colourise hidden files in `ls` file listings?

LS_COLORS environmental variable lets you decide on colours for different file types for ls command, such as, directories, regular files, links etc. I suppose that dot files are considered a variation ...