我有一个这种格式的文件,problem.txt:
StarBonds
? | 356 Positions | Gain: H$59,834,200 (15.26%)
Security Shares & Paid Current Today ? Value Gain / Loss ±
AANDE 20,000 !|! H$26.35 H$29.84 H$0.08 H$596,800 H$69,800 13%
ABASS 20,000 !|! H$51.68 H$51.29 -H$0.27 H$1,025,800 -H$7,800 -0%
ABRAG 20,000 !|! H$39.65 H$44.98 -H$0.13 ? H$899,600 H$106,600 13%
ABRES 20,000 !|! H$49.62 H$45.26 -H$0.40 H$1,079,600 H$87,200 8%
我想删除所有不以2-5字符,所有大写字母标识符开头的行.
在grep的命令行中,它只向我显示那些行而不是"垃圾行"(前面四个例子中的前四行).即我想要的结果.$ grep'^ [A-Z0-9] [A-Z0-9] +'problem.txt
AANDE 20,000 !|! H$26.35 H$29.84 H$0.08 H$596,800 H$69,800 13%
ABASS 20,000 !|! H$51.68 H$51.29 -H$0.27 …