多年来,我注意到Unix中的GNU grep(不仅仅是
Linux风格)检测到我正在像xterm / gnome-terminal / kconsole这样交互地使用一个可以支持色彩的TERM,并且在上下文中很好地染色了我的搜索表达式.
什么可能是一个简单的cli工具,只是粗体/突出显示您的正则表达式或简单的搜索字符串,但与grep不同,否则不会过滤出任何行？也许一个sed技巧可以做到这一点,我可以别名和以后的管道命令？
例
所以我写了一个程序pricehist.sh,它通常会为另一个程序生成类似CSV的数据,但是我经常直观地检查它：
./pricehist.sh mostalexp-GPW 28 |sort -r -g -k 3 -t ' ' |column -t -s"," MOSTALEXP,20120222,0.78,0.79,0.76,0.77,63900,0.77 0.04000 5.00000 -0.01000 -1.25000 49203 MOSTALEXP,20120203,0.82,446089,0.78 0.04000 4.87805 0 0 347949 MOSTALEXP,20120124,0.71,0.69,61478,0.71 0.03000 4.16667 -0.01000 -1.38889 43649 MOSTALEXP,20120130,0.73,0.70,59488,0.73 0.03000 4.10959 0 0 43426 MOSTALEXP,20120210,0.81,104120,0.81 0.03000 3.75000 0.01000 1.25000 84337 MOSTALEXP,20120213,0.80,86606,0.80 0.03000 3.70370 -0.01000 -1.23457 69284 MOSTALEXP,20120126,0.75,0.72,146353,0.72 0.02000 2.81690 0.04000 5.63380 105374 MOSTALEXP,20120131,72734,0.72 0.02000 2.73973 0 0 52368 MOSTALEXP,20120123,24133,0.72 0.02000 2.73973 0 0 17375 MOSTALEXP,20120214,56990,0.79 0.02000 2.50000 0.01000 1.25000 45022 MOSTALEXP,20120209,65243,0.80 0.02000 2.46914 0.01000 1.23457 52194 MOSTALEXP,20120118,0.68,62520,0.69 0.01000 1.44928 0.01000 1.44928 43138 MOSTALEXP,20120125,92317,0.71 0.01000 1.40845 0 0 65545 MOSTALEXP,20120201,0.74,199791,0.74 0.01000 1.38889 0.02000 2.77778 147845 MOSTALEXP,20120127,38157,0.73 0.01000 1.38889 0.01000 1.38889 27854 MOSTALEXP,20120207,56243,0.79 0.01000 1.28205 0.01000 1.28205 44431 MOSTALEXP,20120206,133597,0.78 0.01000 1.28205 0.02000 2.56410 104205 MOSTALEXP,20120221,112738,0.80 0.01000 1.25000 0.01000 1.25000 90190 MOSTALEXP,20120217,0.85,272245,0.80 0.01000 1.25000 0.05000 6.25000 217796 MOSTALEXP,20120216,30814,0.80 0.01000 1.25000 0.01000 1.25000 24651 MOSTALEXP,20120113,0.66,0.65,90267,0.65 0.00500 0.76336 0.00500 0.76336 58673 MOSTALEXP,20120220,83881,0.80 0 0 0.02000 2.50000 67104 MOSTALEXP,20120215,128714,0.80 0 0 0.03000 3.79747 102971 MOSTALEXP,20120208,0.84,280446,0.81 0 0 0.05000 6.32911 227161 MOSTALEXP,20120120,128831,0.73 0 0 0.02000 2.77778 94046 MOSTALEXP,20120117,0.67,284886,0.69 0 0 0.04000 5.97015 196571 MOSTALEXP,20120116,9548,0.67 0 0 0.02000 3.07692 6397 MOSTALEXP,20120202,0.87,1270955,0.82 -0.01000 -1.35135 0.13000 17.56757 1042183 MOSTALEXP,20120119,320471,0.72 -0.01000 -1.44928 0.05000 7.24638 230739
在管道末尾(之后的列 – -t),添加一些至少突出显示至少字符串$(日期％Y％m％d)的东西是很好的,目前这个字符串估值为20120222
另一个例子是tail -F /tmp/*.log | grep -C 9999 YouJustGotHacked除了我不希望grep实际过滤掉任何行,只是让YouJustGotHacked更容易发现噪音.
您可以使用egrep并匹配您要查找的模式和行开始.由于后者总是匹配,而是不能被着色,它会模拟你所追求的.
原文链接：/regex/357085.htmlegrep 'pattern|^' file
编辑：我原来从this question的答案中了解到.
