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193. Valid Phone Numbers

时间:2019-01-13 17:08:50      阅读:184      评论:0      收藏:0      [点我收藏+]

标签:win   git   xxxx   als   OWIN   egrep   contains   text   output   

Given a text file file.txt that contains list of phone numbers (one per line), write a one liner bash script to print all valid phone numbers.

You may assume that a valid phone number must appear in one of the following two formats: (xxx) xxx-xxxx or xxx-xxx-xxxx. (x means a digit)

You may also assume each line in the text file must not contain leading or trailing white spaces.

Example:

Assume that file.txt has the following content:

987-123-4567
123 456 7890
(123) 456-7890

Your script should output the following valid phone numbers:

987-123-4567
(123) 456-7890
# Read from the file file.txt and output all valid phone numbers to stdout.
egrep ‘(^\([0-9]{3}\) |^[0-9]{3}-)[0-9]{3}-[0-9]{4}$‘ file.txt

193. Valid Phone Numbers

标签:win   git   xxxx   als   OWIN   egrep   contains   text   output   

原文地址:https://www.cnblogs.com/bernieloveslife/p/10263114.html

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