彩色的grep - 查看整个文件，高亮匹配 [英] Colorized grep -- viewing the entire file with highlighted matches

问题描述

我觉得的grep 的 - 颜色=总是标记是相当有用的。然而，只有grep的打印用火柴线（除非你要求上下文行）。由于每次打印有一个匹配行，高亮并不因为它可以添加尽可能多的功能。

我真的很想猫的文件，并看到高亮匹配模式整个文件。

是有一些方法，我可以告诉grep来打印每行而无论是否有相匹配的阅读？我知道我可以写一个脚本在文件的每一行中运行的grep，不过我很好奇，这是否是可能的标准的grep 。

解决方案

 的egrep --color'的模式| $文件
 

或者如果你坚持使用grep

 的grep --color -E'的模式| $文件
 

I find grep's --color=always flag to be tremendously useful. However, grep only prints lines with matches (unless you ask for context lines). Given that each line it prints has a match, the highlighting doesn't add as much capability as it could.

I'd really like to cat a file and see the entire file with the pattern matches highlighted.

Is there some way I can tell grep to print every line being read regardless of whether there's a match? I know I could write a script to run grep on every line of a file, but I was curious whether this was possible with standard grep.

解决方案

egrep --color 'pattern|$' file

or if you insist on using grep

grep --color -E 'pattern|$' file

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