What is the intuition for higher homotopy groups not vanishing?

Align the contents of a numerical matrix when you have minus signs

Is "repository" pronounced /rɪˈpɒzɪt(ə)ri/ or ri-ˈpä-zə-ˌtȯr-ē or /rəˈpäzəˌtôrē/?

Why aren't there any women super Grandmasters (GMs)?

Why would word of Princess Leia's capture generate sympathy for the Rebellion in the Senate?

Do higher dimensions have axes?

What are my hardware upgrade optoins for a late 2009 iMac?

Will copper pour help on my single-layer PCB?

What's the largest an Earth-like planet can be and support Earth's biosphere?

Why are flying carpets banned while flying brooms are not?

Making a Dataset that emulates `ls -tlra`?

A spacecraft is travelling at X units per hour. But relative to what exactly? Does it depend on orbit? How?

Weight functions in graph algorithms

Equality of complex numbers in general

Parser for STL stereolithography data files

What is a Kravchuk transform and how is it related to Fourier transforms?

Locked-up DOS computer beeped on keypress. What mechanism caused that?

Which family is it?

I want light controlled by one switch, not two

Inscriptio Labyrinthica

When we are talking about black hole evaporation - what exactly happens?

How should I interpret a promising preprint that was never published in a peer-reviewed journal?

What's a German word for »Sandbagger«?

Should I work for free if client's requirement changed

How can I use the arrow sign in my bash prompt?

How can I shorten my command line (bash) prompt?What does “$debian_chroot:+($debian_chroot)” do in my terminal prompt?How can I shorten my command line (bash) prompt?Changing behavior of bash prompt when functioning as rootbash prompt chenged itself to a plain “#”how to fix my keyboard after a bash script messed it upHow to add colored git branch to my bash prompt?Prompt doesn't update git branchtab completion missing, ll not found, logout not foundShell prompt customization and cmd behaviorWrapping lines bugs when trying to colour terminal PS1 (even when escaping non printing caracters)No line break with colored git branch in bash prompt

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;

17

3

How can I use these red and green arrow signs in the bash prompt?

update 1

This is my .bashrc file

if [ "$color_prompt" = yes ]; then
PS1='$debian_chroot:+($debian_chroot)[33[01;32m][33[00m] 
[33[01;34m]→ w[33[00m]$ '
else
PS1='$debian_chroot:+($debian_chroot)→ w$ '
fi
unset color_prompt force_color_prompt

I want this arrow to be colored as @dessert answered before
(turn red and green for false and true command )

bash bashrc prompt

share|improve this question

edited Mar 26 at 15:43

Afshin

asked Mar 26 at 7:58

AfshinAfshin

751212 bronze badges

add a comment | 

17

3

How can I use these red and green arrow signs in the bash prompt?

update 1

This is my .bashrc file

if [ "$color_prompt" = yes ]; then
PS1='$debian_chroot:+($debian_chroot)[33[01;32m][33[00m] 
[33[01;34m]→ w[33[00m]$ '
else
PS1='$debian_chroot:+($debian_chroot)→ w$ '
fi
unset color_prompt force_color_prompt

I want this arrow to be colored as @dessert answered before
(turn red and green for false and true command )

bash bashrc prompt

share|improve this question

edited Mar 26 at 15:43

Afshin

asked Mar 26 at 7:58

AfshinAfshin

751212 bronze badges

add a comment | 

How can I use these red and green arrow signs in the bash prompt?

update 1

This is my .bashrc file

if [ "$color_prompt" = yes ]; then
PS1='$debian_chroot:+($debian_chroot)[33[01;32m][33[00m] 
[33[01;34m]→ w[33[00m]$ '
else
PS1='$debian_chroot:+($debian_chroot)→ w$ '
fi
unset color_prompt force_color_prompt

I want this arrow to be colored as @dessert answered before
(turn red and green for false and true command )

bash bashrc prompt

share|improve this question

edited Mar 26 at 15:43

Afshin

asked Mar 26 at 7:58

AfshinAfshin

751212 bronze badges

if [ "$color_prompt" = yes ]; then
PS1='$debian_chroot:+($debian_chroot)[33[01;32m][33[00m] 
[33[01;34m]→ w[33[00m]$ '
else
PS1='$debian_chroot:+($debian_chroot)→ w$ '
fi
unset color_prompt force_color_prompt

share|improve this question

edited Mar 26 at 15:43

Afshin

asked Mar 26 at 7:58

AfshinAfshin

751212 bronze badges

share|improve this question

edited Mar 26 at 15:43

Afshin

asked Mar 26 at 7:58

AfshinAfshin

751212 bronze badges

asked Mar 26 at 7:58

AfshinAfshin

751212 bronze badges

asked Mar 26 at 7:58

AfshinAfshin

751212 bronze badges

1 Answer
1

active

oldest

votes

24

You can use bash’s PROMPT_COMMAND to run a function which builds your prompt, e.g.:

PROMPT_COMMAND=build_prompt

build_prompt() 
 EXIT=$? # save exit code of last command
 red='[e[0;31m]' # colors
 green='[e[0;32m]'
 cyan='[e[1;36m]'
 reset='[e[0m]'
 PS1='$debian_chroot:+($debian_chroot)' # begin prompt

 if [ $EXIT != 0 ]; then # add arrow color dependent on exit code
 PS1+="$red"
 else
 PS1+="$green"
 fi

 PS1+="→$reset $cyanw$reset \$ " # construct rest of prompt

Add this code to your ~/.bashrc file and open a new terminal or run . ~/.bashrc in an existing one for the changes to take effect. Note that I added the usual $ at the end, this prints $ normally and # if you’re root, thus preventing you from running commands as root unwittingly. The false command is a good way to test the non-zero exit code variant:

If you’re into prompt themeing you should definitely take a look at the zsh shell (package zsh), whose famous configuration framework Oh My Zsh alone comes with over hundred themes. Additionally there are many other plugins available, for example the Spaceship ZSH prompt.

Links

• How can I shorten my command line (bash) prompt?


• Bash Prompt with Last Exit Code


• Easy Bash PS1 Generator


• Bash tips: Colors and formatting


• What color codes can I use in my PS1 prompt?


• What does "$debian_chroot:+($debian_chroot)" do in my terminal prompt?

share|improve this answer

edited Mar 28 at 19:02

answered Mar 26 at 8:53

dessertdessert

28k66 gold badges8383 silver badges115115 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  While this is a great plain-bash solution, you could take a look at zsh (as a replacement of bash) and especially the Spaceship prompt
  
  – Richard de Wit
  Mar 27 at 7:27
  
  

  
  
  
  

add a comment | 

Your Answer

StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "89"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);

else
createEditor();

);

function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);



);

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1128757%2fhow-can-i-use-the-arrow-sign-in-my-bash-prompt%23new-answer', 'question_page');

);

Post as a guest

Name

Email

Required, but never shown

24

You can use bash’s PROMPT_COMMAND to run a function which builds your prompt, e.g.:

PROMPT_COMMAND=build_prompt

build_prompt() 
 EXIT=$? # save exit code of last command
 red='[e[0;31m]' # colors
 green='[e[0;32m]'
 cyan='[e[1;36m]'
 reset='[e[0m]'
 PS1='$debian_chroot:+($debian_chroot)' # begin prompt

 if [ $EXIT != 0 ]; then # add arrow color dependent on exit code
 PS1+="$red"
 else
 PS1+="$green"
 fi

 PS1+="→$reset $cyanw$reset \$ " # construct rest of prompt

Add this code to your ~/.bashrc file and open a new terminal or run . ~/.bashrc in an existing one for the changes to take effect. Note that I added the usual $ at the end, this prints $ normally and # if you’re root, thus preventing you from running commands as root unwittingly. The false command is a good way to test the non-zero exit code variant:

If you’re into prompt themeing you should definitely take a look at the zsh shell (package zsh), whose famous configuration framework Oh My Zsh alone comes with over hundred themes. Additionally there are many other plugins available, for example the Spaceship ZSH prompt.

Links

• How can I shorten my command line (bash) prompt?


• Bash Prompt with Last Exit Code


• Easy Bash PS1 Generator


• Bash tips: Colors and formatting


• What color codes can I use in my PS1 prompt?


• What does "$debian_chroot:+($debian_chroot)" do in my terminal prompt?

share|improve this answer

edited Mar 28 at 19:02

answered Mar 26 at 8:53

dessertdessert

28k66 gold badges8383 silver badges115115 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  While this is a great plain-bash solution, you could take a look at zsh (as a replacement of bash) and especially the Spaceship prompt
  
  – Richard de Wit
  Mar 27 at 7:27
  
  

  
  
  
  

add a comment | 

24

You can use bash’s PROMPT_COMMAND to run a function which builds your prompt, e.g.:

PROMPT_COMMAND=build_prompt

build_prompt() 
 EXIT=$? # save exit code of last command
 red='[e[0;31m]' # colors
 green='[e[0;32m]'
 cyan='[e[1;36m]'
 reset='[e[0m]'
 PS1='$debian_chroot:+($debian_chroot)' # begin prompt

 if [ $EXIT != 0 ]; then # add arrow color dependent on exit code
 PS1+="$red"
 else
 PS1+="$green"
 fi

 PS1+="→$reset $cyanw$reset \$ " # construct rest of prompt

Add this code to your ~/.bashrc file and open a new terminal or run . ~/.bashrc in an existing one for the changes to take effect. Note that I added the usual $ at the end, this prints $ normally and # if you’re root, thus preventing you from running commands as root unwittingly. The false command is a good way to test the non-zero exit code variant:

If you’re into prompt themeing you should definitely take a look at the zsh shell (package zsh), whose famous configuration framework Oh My Zsh alone comes with over hundred themes. Additionally there are many other plugins available, for example the Spaceship ZSH prompt.

Links

• How can I shorten my command line (bash) prompt?


• Bash Prompt with Last Exit Code


• Easy Bash PS1 Generator


• Bash tips: Colors and formatting


• What color codes can I use in my PS1 prompt?


• What does "$debian_chroot:+($debian_chroot)" do in my terminal prompt?

share|improve this answer

edited Mar 28 at 19:02

answered Mar 26 at 8:53

dessertdessert

28k66 gold badges8383 silver badges115115 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  While this is a great plain-bash solution, you could take a look at zsh (as a replacement of bash) and especially the Spaceship prompt
  
  – Richard de Wit
  Mar 27 at 7:27
  
  

  
  
  
  

add a comment | 

You can use bash’s PROMPT_COMMAND to run a function which builds your prompt, e.g.:

PROMPT_COMMAND=build_prompt

build_prompt() 
 EXIT=$? # save exit code of last command
 red='[e[0;31m]' # colors
 green='[e[0;32m]'
 cyan='[e[1;36m]'
 reset='[e[0m]'
 PS1='$debian_chroot:+($debian_chroot)' # begin prompt

 if [ $EXIT != 0 ]; then # add arrow color dependent on exit code
 PS1+="$red"
 else
 PS1+="$green"
 fi

 PS1+="→$reset $cyanw$reset \$ " # construct rest of prompt

Add this code to your ~/.bashrc file and open a new terminal or run . ~/.bashrc in an existing one for the changes to take effect. Note that I added the usual $ at the end, this prints $ normally and # if you’re root, thus preventing you from running commands as root unwittingly. The false command is a good way to test the non-zero exit code variant:

If you’re into prompt themeing you should definitely take a look at the zsh shell (package zsh), whose famous configuration framework Oh My Zsh alone comes with over hundred themes. Additionally there are many other plugins available, for example the Spaceship ZSH prompt.

Links

• How can I shorten my command line (bash) prompt?


• Bash Prompt with Last Exit Code


• Easy Bash PS1 Generator


• Bash tips: Colors and formatting


• What color codes can I use in my PS1 prompt?


• What does "$debian_chroot:+($debian_chroot)" do in my terminal prompt?

share|improve this answer

edited Mar 28 at 19:02

answered Mar 26 at 8:53

dessertdessert

28k66 gold badges8383 silver badges115115 bronze badges

PROMPT_COMMAND=build_prompt

build_prompt() 
 EXIT=$? # save exit code of last command
 red='[e[0;31m]' # colors
 green='[e[0;32m]'
 cyan='[e[1;36m]'
 reset='[e[0m]'
 PS1='$debian_chroot:+($debian_chroot)' # begin prompt

 if [ $EXIT != 0 ]; then # add arrow color dependent on exit code
 PS1+="$red"
 else
 PS1+="$green"
 fi

 PS1+="→$reset $cyanw$reset \$ " # construct rest of prompt

share|improve this answer

edited Mar 28 at 19:02

answered Mar 26 at 8:53

dessertdessert

28k66 gold badges8383 silver badges115115 bronze badges

answered Mar 26 at 8:53

dessertdessert

28k66 gold badges8383 silver badges115115 bronze badges

answered Mar 26 at 8:53

dessertdessert

28k66 gold badges8383 silver badges115115 bronze badges