为什么grep在从bash脚本执行时会丢失彩色输出？

问题描述

我有一个简单的bash脚本来在我的 grep 结果之上打印标题：

<$ p $如果[[$ var！= - *]];









$ b $
然后
break
fi
完成

echo
echo -en\e [1; 31m ====== GREP $ var ====== \e [0m\\\

echo

grep $ @

但是最终的命令与直接在提示符下实际运行 grep 不同，因为颜色从结果。当直接执行 grep 时，结果显示的文件名为紫色，匹配为红色，但现在所有输出都是正常的终端文本颜色。有人可以告诉我如何从我的脚本中获取彩色版本吗？

解决方案

看起来像grep不会在交互时产生颜色模式。您可以强制它产生彩色输出：

  grep --color = always $ @ 
  

I have a simple bash script to print a header on top of my grep results:

#!/bin/bash

for var in "$@"
do
    if [[ $var != -* ]];
    then
        break
    fi
done

echo
echo -en "\e[1;31m     ====== GREP $var ======\e[0m\n"
echo

grep $@

But the final command is somehow not the same as actually running grep from the prompt directly, because the colors are missing from the results. When executing grep directly, the results show filenames in purple and matches in red, but now all the output is the normal terminal text color. Can someone tell me how to get the colored version from my script?

解决方案

Looks like grep does not produce colors when not in interactive mode. You can force it to produce colored output:

grep --color=always $@

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