Free verb regular software for linux

RegURL is an extension which applies a regular expression on the URL.

A regular expression is a string that is used to describe or match a set of strings, according to certain syntax rules. For example, the regular expression bex can be used to describe (and search for) all of the instances of the string "ex" that occur at word breaks (signified by the b).

Thus in the phrase, "Texts for expert experimenters," the regular expresssion bex returns the "ex" in "expert" and "experimenters," but not in "Texts" (because the "ex" occurs inside the word there and not at the word break).

Regular expressions are used by many text editors and utilities to search and manipulate bodies of text based on certain patterns. Many programming languages support regular expressions for string manipulation.

For example, Perl and Tcl have a powerful regular expression engine built directly into their syntax. The set of utilities (including the editor ed and the filter grep) provided by Unix distributions were the first to popularize the concept of regular expressions.

"Regular expression" is often shortened in speech to regex, and in writing to regexp or regex (singular) or regexps, regexes, or regexen (plural).

NewsGrab provides a tool to retrieve binary files from an NNTP server.
NewsGrab is a small tool that uses regular expressions to download and uudecode/ydecode binary files from USENET.
Enhancements:
- Bumped version to 0.5.0pre4
- Another directory permission changed, thanks to Niels Heinen.

perlrecharclass package contains Perl regular expression character classes.

The top level documentation about Perl regular expressions is found in perlre.
This manual page discusses the syntax and use of character classes in Perl Regular Expressions.

A character class is a way of denoting a set of characters, in such a way that one character of the set is matched. Its important to remember that matching a character class consumes exactly one character in the source string. (The source string is the string the regular expression is matched against.)
There are three types of character classes in Perl regular expressions: the dot, backslashed sequences, and the bracketed form.

The dot

The dot (or period), . is probably the most used, and certainly the most well-known character class. By default, a dot matches any character, except for the newline. The default can be changed to add matching the newline with the single line modifier: either for the entire regular expression using the /s modifier, or locally using (?s).

Here are some examples:

"a" =~ /./ # Match
"." =~ /./ # Match
"" =~ /./ # No match (dot has to match a character)
"n" =~ /./ # No match (dot does not match a newline)
"n" =~ /./s # Match (global single line modifier)
"n" =~ /(?s:.)/ # Match (local single line modifier)
"ab" =~ /^.$/ # No match (dot matches one character)

Backslashed sequences

Perl regular expressions contain many backslashed sequences that constitute a character class. That is, they will match a single character, if that character belongs to a specific set of characters (defined by the sequence). A backslashed sequence is a sequence of characters starting with a backslash. Not all backslashed sequences are character class; for a full list, see perlrebackslash.

Heres a list of the backslashed sequences, which are discussed in more detail below.

d Match a digit character.
D Match a non-digit character.
w Match a "word" character.
W Match a non-"word" character.
s Match a white space character.
S Match a non-white space character.
h Match a horizontal white space character.
H Match a character that isnt horizontal white space.
v Match a vertical white space character.
V Match a character that isnt vertical white space.
pP, p{Prop} Match a character matching a Unicode property.
PP, P{Prop} Match a character that doesnt match a Unicode property.

RegExplorer project is a regular Expression Explorer.

It allows for writing regular expressions and visually see the matches, thus making regular expression much easier to write and maintain.

regular expression parser is a C++ regexp parser that accomplishes The Open Group specification Issue 6, IEEE Std 1003.1, 2004 Edition.

regular expression parser allows you to parse input using regular expressions, and to retrieve parsed sub-expression matches in a few steps.

regexxer project is a nifty search/replace tool featuring Perl-style regular expressions.

It features recursive search through directory trees and Perl-style regular expressions (using libpcre). The user interface is similar to the project-wide search/replace dialog in the Sniff+ IDE, but regexxer aims to surpass it.

Kvblade project is a kernel module implementing the target side of the AoE protocol. Users can command the module through sysfs to export block devices on specified network interfaces.

The loopback device should be used as an intermediary for exporting regular files with kvblade.

GRegExp Explorer is a graphical regular expression explorer based on the PCRE regular expression library. It is possible to test regular expressions on the fly and check the result in detail.