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How To Turn On/Off Colors For ls Command In Bash On a Linux/Unix
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======
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How do I turn on or off file name colors (ls command colors) in bash shell on a Linux or Unix like operating systems?
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Most modern Linux distributions and Unix systems comes with alias that defines colors for your file. However, ls command is responsible for displaying color on screen for files, directories and other file system objects.
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By default, color is not used to distinguish types of files. You need to pass --color option to the ls command on Linux. If you are using OS X or BSD based system pass -G option to the ls command. The syntax is as follows to turn on or off colors.
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#### How to turn off colors for ls command
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Type the following command
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`$ ls --color=none`
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Or just remove alias with the unalias command:
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`$ unalias ls`
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Please note that the following bash shell aliases are defined to display color with the ls command. Use combination of [alias command][1] and [grep command][2] as follows:
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`$ alias | grep ls`
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Sample outputs
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```
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alias l='ls -CF'
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alias la='ls -A'
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alias ll='ls -alF'
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alias ls='ls --color=auto'
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```
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#### How to turn on colors for ls command
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Use any one of the following command:
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```
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$ ls --color=auto
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$ ls --color=tty
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```
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[Define bash shell aliases ][3]if you want:
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`alias ls='ls --color=auto'`
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You can add or remove ls command alias to the ~/.bash_profile or [~/.bashrc file][4]. Edit file using a text editor such as vi command:
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`$ vi ~/.bashrc`
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Append the following code:
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```
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# my ls command aliases #
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alias ls = 'ls --color=auto'
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```
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[Save and close the file in Vi/Vim text editor][5].
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#### A note about *BSD/macOS/Apple OS X ls command
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Pass the -G option to ls command to enable colorized output on a {Free,Net,Open}BSD or macOS and Apple OS X Unix family of operating systems:
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`$ ls -G`
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Sample outputs:
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[![How to enable colorized output for the ls command in Mac OS X Terminal][6]][7]
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How to enable colorized output for the ls command in Mac OS X Terminal
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#### How do I skip colorful ls command output temporarily?
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You can always [disable bash shell aliases temporarily][8] using any one of the following syntax:
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`\ls
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/bin/ls
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command ls
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'ls'`
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#### About the author
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The author is the creator of nixCraft and a seasoned sysadmin and a trainer for the Linux operating system/Unix shell scripting. He has worked with global clients and in various industries, including IT, education, defense and space research, and the nonprofit sector. Follow him on [Twitter][9], [Facebook][10], [Google+][11].
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--------------------------------------------------------------------------------
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via: https://www.cyberciti.biz/faq/how-to-turn-on-or-off-colors-in-bash/
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作者：[Vivek Gite][a]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]:https://www.cyberciti.biz/
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[1]:https://www.cyberciti.biz/tips/bash-aliases-mac-centos-linux-unix.html (See Linux/Unix alias command examples for more info)
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[2]:https://www.cyberciti.biz/faq/howto-use-grep-command-in-linux-unix/ (See Linux/Unix grep command examples for more info)
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[3]:https://www.cyberciti.biz/tips/bash-aliases-mac-centos-linux-unix.html
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[4]:https://bash.cyberciti.biz/guide/~/.bashrc
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[5]:https://www.cyberciti.biz/faq/linux-unix-vim-save-and-quit-command/
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[6]:https://www.cyberciti.biz/media/new/faq/2016/01/color-ls-for-Mac-OS-X.jpg
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[7]:https://www.cyberciti.biz/faq/apple-mac-osx-terminal-color-ls-output-option/
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[8]:https://www.cyberciti.biz/faq/bash-shell-temporarily-disable-an-alias/
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[9]:https://twitter.com/nixcraft
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[10]:https://facebook.com/nixcraft
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[11]:https://plus.google.com/+CybercitiBiz
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@ -0,0 +1,87 @@
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如何在 Linux/Unix 的 Bash 中打开/关闭 ls 命令颜色
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======
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如何在 Linux或类 Unix 操作系统上的 bash shell 中打开或关闭文件名称颜色（ls 命令颜色）？
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大多数现代 Linux 发行版和 Unix 系统都有定义文件名称颜色的别名。然而，ls 命令负责在屏幕上显示文件、目录和其他文件系统对象的颜色。
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默认情况下，文件类型不会用颜色区分。你需要在 Linux 上将 -color 选项传递给 ls 命令。如果你正在使用基于 OS X 或 BSD 的系统，请将 -G 选项传递给 ls 命令。打开或关闭颜色的语法如下。
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#### 如何关闭 ls 命令的颜色
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输入以下命令
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`$ ls --color=none`
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或者用 unalias 命令删除别名：
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`$ unalias ls`
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请注意，下面的 bash shell 别名被定义为用 ls 命令显示颜色。租个组合使用[ alias 命令][1]和[ grep 命令][2]：
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`$ alias | grep ls`
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示例输出：
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```
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alias l='ls -CF'
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alias la='ls -A'
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alias ll='ls -alF'
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alias ls='ls --color=auto'
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```
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#### 如何打开 ls 命令的颜色
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使用以下任何一个命令：
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```
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$ ls --color=auto
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$ ls --color=tty
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```
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如果你想要的话，[定义 bash shell 别名][3]：
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`alias ls='ls --color=auto'`
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你可以在 ~/.bash_profile 或 [~/.bashrc file][4] 中添加或删除 ls 别名 。使用文本编辑器（如 vi）编辑文件：
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`$ vi ~/.bashrc`
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追加下面的代码：
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```
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# my ls command aliases #
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alias ls = 'ls --color=auto'
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```
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[在 Vi/Vim 文本编辑器中保存并关闭文件][5]。
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#### 关于 \*BSD/macOS/Apple OS X 中 ls 命令的注意点
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将 -G 选项传递给 ls 命令以在 {Free、Net、Open} BSD 或 macOS 和 Apple OS X Unix 操作系统家族上启用彩色输出：
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`$ ls -G`
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示例输出：
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[![How to enable colorized output for the ls command in Mac OS X Terminal][6]][7]
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如何在 Mac OS X 终端中为 ls 命令启用彩色输出
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#### 如何临时跳过 ls 命令彩色输出？
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你可以使用以下任何一种语法[暂时禁用 bash shell 别名][8]：
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`\ls
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/bin/ls
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command ls
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'ls'`
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#### 关于作者
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作者是 nixCraft 的创建者，经验丰富的系统管理员，也是 Linux 操作系统/Unix shell 脚本的培训师。他曾与全球客户以及IT、教育、国防和太空研究以及非营利部门等多个行业合作。在 [Twitter][9]、[Facebook][10]、[Google +][11] 上关注他。
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--------------------------------------------------------------------------------
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via: https://www.cyberciti.biz/faq/how-to-turn-on-or-off-colors-in-bash/
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作者：[Vivek Gite][a]
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译者：[geekpi](https://github.com/geekpi)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]:https://www.cyberciti.biz/
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[1]:https://www.cyberciti.biz/tips/bash-aliases-mac-centos-linux-unix.html (See Linux/Unix alias command examples for more info)
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[2]:https://www.cyberciti.biz/faq/howto-use-grep-command-in-linux-unix/ (See Linux/Unix grep command examples for more info)
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[3]:https://www.cyberciti.biz/tips/bash-aliases-mac-centos-linux-unix.html
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[4]:https://bash.cyberciti.biz/guide/~/.bashrc
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[5]:https://www.cyberciti.biz/faq/linux-unix-vim-save-and-quit-command/
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[6]:https://www.cyberciti.biz/media/new/faq/2016/01/color-ls-for-Mac-OS-X.jpg
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[7]:https://www.cyberciti.biz/faq/apple-mac-osx-terminal-color-ls-output-option/
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[8]:https://www.cyberciti.biz/faq/bash-shell-temporarily-disable-an-alias/
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[9]:https://twitter.com/nixcraft
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[10]:https://facebook.com/nixcraft
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[11]:https://plus.google.com/+CybercitiBiz
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