shell script regex
You cannot use regular expressions in portable shell scripts (ones that will run on any POSIX compliant shell). In general, patterns in the shell are globs, not ... ,Regular expressions (Regexp) are special characters which help search data, matching complex patterns ... , POSIX shell doesn't have a regular expression operator for UNIX ERE or PCRE. But it does have the case keyword: case "$tmp" in FATAL*) ...,Well, A regular expression or regex, in general, is a pattern of text you define that a Linux program like sed or awk uses it to filter text. We saw some of those patterns when introducing basic Linux commands and saw how the ls command uses wildcard char,Many, many ways. Here are a few: GNU Grep $ echo 3.14.37-1-lts | grep -oP '^[^-]*' 3.14.37. sed $ echo 3.14.37-1-lts | sed 's/^-([^-]*-).*/-1/' 3.14.37. Perl , Using bash regular expressions: re="http://([^/]+)/" if [[ $name =~ $re ]]; then echo $BASH_REMATCH[1]}; fi. Edit - OP asked for explanation of ..., You can do the following to make it work cross-platforms with any the bourne shell (/bin/sh) based shell, no bash specific primitives -,In this chapter, we will discuss in detail about regular expressions with SED in Unix. A regular expression is a string that can be used to describe several ... , The grep command will select the desired line(s) from many but it will not directly manipulate the line. For that, you use sed in a pipeline:, 正規表示法(Regular Expression, RE, 或稱為常規表示法)是透過一些特殊字元的排列，用以『搜尋/取代/刪除』一列或多列文字字串， 簡單的說，正規 ...
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 shell script regex 相關參考資料
can i use regex in a bash shell script - Stack Overflow
You cannot use regular expressions in portable shell scripts (ones that will run on any POSIX compliant shell). In general, patterns in the shell are globs, not ... https://stackoverflow.com Linux Regular Expression Tutorial: Grep Regex Example
Regular expressions (Regexp) are special characters which help search data, matching complex patterns ... https://www.guru99.com Regex and if in shell script - Stack Overflow
POSIX shell doesn't have a regular expression operator for UNIX ERE or PCRE. But it does have the case keyword: case "$tmp" in FATAL*) ... https://stackoverflow.com Regex tutorial for Linux (Sed & AWK) examples – Like Geeks
Well, A regular expression or regex, in general, is a pattern of text you define that a Linux program like sed or awk uses it to filter text. We saw some of those patterns when introducing basic Linux... https://likegeeks.com regular expression to extract information in shell script - Unix ...
Many, many ways. Here are a few: GNU Grep $ echo 3.14.37-1-lts | grep -oP '^[^-]*' 3.14.37. sed $ echo 3.14.37-1-lts | sed 's/^-([^-]*-).*/-1/' 3.14.37. Perl https://unix.stackexchange.com shell script. how to extract string using regular expressions ...
Using bash regular expressions: re="http://([^/]+)/" if [[ $name =~ $re ]]; then echo $BASH_REMATCH[1]}; fi. Edit - OP asked for explanation of ... https://stackoverflow.com shell scripting and regular expression - Stack Overflow
You can do the following to make it work cross-platforms with any the bourne shell (/bin/sh) based shell, no bash specific primitives - https://stackoverflow.com Unix Linux - Regular Expressions with SED - Tutorialspoint
In this chapter, we will discuss in detail about regular expressions with SED in Unix. A regular expression is a string that can be used to describe several ... https://www.tutorialspoint.com Using regular expressions in shell script - Stack Overflow
The grep command will select the desired line(s) from many but it will not directly manipulate the line. For that, you use sed in a pipeline: https://stackoverflow.com 鳥哥的Linux 私房菜-- 第十一章、正規表示法與文件格式化處理
正規表示法(Regular Expression, RE, 或稱為常規表示法)是透過一些特殊字元的排列，用以『搜尋/取代/刪除』一列或多列文字字串， 簡單的說，正規 ... http://linux.vbird.org |