多年来,我注意到Unix中GNU的grep(不仅仅是Linux风格)检测到我正在交互使用具有颜色功能的TERM,例如xterm / gnome-terminal / kconsole,并在上下文中很好地为搜索表达式着色。
什么样的简单cli工具只能加粗/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,它不会过滤掉任何行吗?也许一个sed技巧可以做到这一点,我可以为它别名并稍后使用管道命令吗?
例
因此,我编写了一个程序pricehist.sh,该程序通常为另一个程序生成类似CSV的数据,但是我经常像这样对它进行视觉检查:
./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,20120203,0.82,0.82,0.78,0.78,446089,0.78 0.04000 4.87805 0 0 347949
MOSTALEXP,20120124,0.71,0.71,0.69,0.71,61478,0.71 0.03000 4.16667 -0.01000 -1.38889 43649
MOSTALEXP,20120130,0.73,0.73,0.70,0.73,59488,0.73 0.03000 4.10959 0 0 43426
MOSTALEXP,20120210,0.79,0.81,0.77,0.81,104120,0.81 0.03000 3.75000 0.01000 1.25000 84337
MOSTALEXP,20120213,0.80,0.80,0.78,0.80,86606,0.80 0.03000 3.70370 -0.01000 -1.23457 69284
MOSTALEXP,20120126,0.69,0.75,0.69,0.72,146353,0.72 0.02000 2.81690 0.04000 5.63380 105374
MOSTALEXP,20120131,0.72,0.73,0.71,0.72,72734,0.72 0.02000 2.73973 0 0 52368
MOSTALEXP,20120123,0.72,0.73,0.71,0.72,24133,0.72 0.02000 2.73973 0 0 17375
MOSTALEXP,20120214,0.78,0.81,0.78,0.79,56990,0.79 0.02000 2.50000 0.01000 1.25000 45022
MOSTALEXP,20120209,0.79,0.82,0.79,0.80,65243,0.80 0.02000 2.46914 0.01000 1.23457 52194
MOSTALEXP,20120118,0.69,0.70,0.68,0.69,62520,0.69 0.01000 1.44928 0.01000 1.44928 43138
MOSTALEXP,20120125,0.70,0.71,0.70,0.71,92317,0.71 0.01000 1.40845 0 0 65545
MOSTALEXP,20120201,0.71,0.74,0.71,0.74,199791,0.74 0.01000 1.38889 0.02000 2.77778 147845
MOSTALEXP,20120127,0.73,0.73,0.71,0.73,38157,0.73 0.01000 1.38889 0.01000 1.38889 27854
MOSTALEXP,20120207,0.78,0.79,0.77,0.79,56243,0.79 0.01000 1.28205 0.01000 1.28205 44431
MOSTALEXP,20120206,0.78,0.80,0.77,0.78,133597,0.78 0.01000 1.28205 0.02000 2.56410 104205
MOSTALEXP,20120221,0.81,0.81,0.79,0.80,112738,0.80 0.01000 1.25000 0.01000 1.25000 90190
MOSTALEXP,20120217,0.80,0.85,0.79,0.80,272245,0.80 0.01000 1.25000 0.05000 6.25000 217796
MOSTALEXP,20120216,0.81,0.81,0.79,0.80,30814,0.80 0.01000 1.25000 0.01000 1.25000 24651
MOSTALEXP,20120113,0.66,0.66,0.65,0.65,90267,0.65 0.00500 0.76336 0.00500 0.76336 58673
MOSTALEXP,20120220,0.80,0.82,0.80,0.80,83881,0.80 0 0 0.02000 2.50000 67104
MOSTALEXP,20120215,0.80,0.82,0.79,0.80,128714,0.80 0 0 0.03000 3.79747 102971
MOSTALEXP,20120208,0.79,0.84,0.79,0.81,280446,0.81 0 0 0.05000 6.32911 227161
MOSTALEXP,20120120,0.74,0.74,0.72,0.73,128831,0.73 0 0 0.02000 2.77778 94046
MOSTALEXP,20120117,0.67,0.71,0.67,0.69,284886,0.69 0 0 0.04000 5.97015 196571
MOSTALEXP,20120116,0.65,0.67,0.65,0.67,9548,0.67 0 0 0.02000 3.07692 6397
MOSTALEXP,20120202,0.75,0.87,0.75,0.82,1270955,0.82 -0.01000 -1.35135 0.13000 17.56757 1042183
MOSTALEXP,20120119,0.70,0.74,0.70,0.72,320471,0.72 -0.01000 -1.44928 0.05000 7.24638 230739
在管道的末尾(在
|column -t
之后),最好添加至少突出显示字符串$(date +%Y%m%d)
的内容,目前该字符串的计算结果为20120222
另一个示例是
tail -F /tmp/*.log | grep -C 9999 YouJustGotHacked
,除了我不希望grep实际上过滤掉任何行,只是使YouJustGotHacked更容易发现噪声。
最佳答案
您可以使用egrep
并匹配要查找的模式和行首。由于后者总是匹配但不能着色,因此可以模仿您的需求。
egrep 'pattern|^' file
编辑:我最初是从对this question的回答中学到的。
关于regex - 类似于grep的工具,可以着色/加粗但不过滤?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/9399005/