管道grep来后的grep preserve着色 [英] Preserve colouring after piping grep to grep

问题描述

有在 preserve LS grep'ing着色后一个问题simlar 但它惹恼我，如果你管彩色的grep输出到另一个grep，该颜色是不是preserved。

There is a simlar question in Preserve ls colouring after grep’ing but it annoys me that if you pipe colored grep output into another grep that the coloring is not preserved.

例如的grep --color WORD * | grep的-v AVOID 不保持第一输出的颜色。但对我来说 LS | grep的文件做保持颜色，为什么不同？

As an example grep --color WORD * | grep -v AVOID does not keep the color of the first output. But for me ls | grep FILE do keep the color, why the difference ?

推荐答案

写入管道时的grep 有时禁用彩色输出，例如。您可以覆盖这个行为的grep --color =总是

grep sometimes disables the color output, for example when writing to a pipe. You can override this behavior with grep --color=always

正确的命令行是

grep --color=always WORD * | grep -v AVOID

这是pretty冗长，或者你可以添加行

This is pretty verbose, alternatively you can just add the line

alias cgrep="grep --color=always"

你的的.bashrc 例如，用 cgrep 为彩色的grep。当重新定义的grep 你可能会遇到麻烦，这依赖于的grep 的特定的输出，不喜欢ASCII逃生脚本code。

to your .bashrc for example and use cgrep as the colored grep. When redefining grep you might run into trouble with scripts which rely on specific output of grep and don't like ascii escape code.

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