I have commands and parameters for inputting text blocks, one per line, such as
XYZ ARG1,ARG2,ARG3, …, ARGN I want to verify whether the parameters of XYZ are applicable to that particular
Tag: regular
Regular expression
Regular Expression (Regular Expression) is a very powerful tool for string retrieval, filtering, and replacement operations. It is often used in daily work. There is a need to find a string that me
Regular expression – check if there is only space in the string
How to check if there are only spaces in a string?
I want to use conditions in an if() statement.
For example,
str<-" "< br />#check if str has only white spaces? example usage
i
Regular expression – parts matching with EGREP regular expression
I want to know, if I use egrep ((GNU grep)2.5.1), I can select a part of the matching text, for example:
grep’^([a-zA-Z.-]+)[0-9]+’ ./file.txt So I only get the matching part between th
Regular expression – What is the best way to make a string operation in a shell script?
I have a path as a string in a shell script, which can be absolute or relative:
/usr/userName/config.cfg< /p> or
../config.cfg
I want to extract the file name (the part after the
Regular expression – Why does this frontal assertion does not work when anchored to the beginning of a string?
Why does this post-assertion not work when it is fixed at the front of the string? Run the following code, and you will see that the first test passes, but the second test only passes the ^ anchor
How to match the comparative operator in the regular expression
I am trying to create a regular expression that matches comparisons like this:
= 445
> 5
>= 22
< 3
<= 42
<> 10 I think this will work, but it won’t:
[=|>|<|>=|<|<=|<>]\s\d+ ‘>’very imp
Regular expression – Rewritecond Request_uri – ^ Can’t work as expected
I am using codeigniter to build a site. I have a series of rewrite conditions & rules in the .htaccess file. The first set of rules turn on or off SSL based on the first paragraph of the uri.
Regular expression – PHP appearance
I have a string, for example:
$foo =’Hello __(“How are you”) I am __(“very good thank you”)’ I know this is a strange string, but please come with me: P
I need a regular expression to f
Regular expression – Multi-line match in Haskell POSIX
I can’t seem to find suitable documentation on Haskell’s POSIX implementation.
Especially the module Text. Regex.Posix.
Anyone Can you point me in the right direction to use multi-line match