I think you are over-simplifying the issue. I don't think that there is no way for certain to know if names exist with a regular expression. You cannot just assume that the last part of a domain name (the Top Level Domain) is a 2 or three characters only.
You might have to trim out the domain name from the full URL & perform a get to the real site to see if you connect. That might be the only way.
There may be a formal list of names of the TLDs
Each of those may have a list of valid names below them
Each of those may have a list of valid names below them
Each of those may have a list of valid names below them
Each of those may have a list of valid names below them ..............
You can see the problem. The list (if you could even build one) would be huge and would be frequently updating. Perhaps a DNS query would give you enough though.
having a look on the regex site I saw that characters can be search using hex values
http://www.regular-expressions.info/characters.html
So I try to use it whith grep to find a è on a string (octal Decimal Hexa : 350 232 E8) but it doesn't work
E.g.
/usr/bin/echo '\0350' | egrep '\xE8'
... (0 Replies)
Hi,
I am trying to do something with grep, but for some reason I just can't get it to to work.
I am looking for find a match in the second field, the length must be 10 characters and end with 'abc'.
The file is in this format:
<int><tab><field2>
I've tried a few patterns, some work,... (2 Replies)
Hello everybody,
I'd like to know how is it I should write a regex in unix to match a string not followed by another string (anywhere in the line).
To be more specific, I want to find lines where "drop table" is found, but not followed anywhere in the line by the character "&".
For... (3 Replies)
Hi all,
I'm a beginner with linux, regex, grep, etc
I am trying to get data out of a file that has about 13,000 lines in this format
name - location
I want to grep all the names out to one file and the locations to another so I can put them into a spreadsheet.
Some have hyphenated... (14 Replies)
basically i have a csv i parse through. a user will supply me with a san switch he/she wants more info about... say the name is "pnj-sansw124"
now i can grep out every connection to that switch w/o issue because this sans switch pnj-sansw124 has multiple slots 1-10. and it looks like this in the... (5 Replies)
I want it to find lines that contain any number of capital letters before P
this is what I have tried
echo "AAAAAP" | grep 'P'
echo "AAAAAP" | grep '\{1\}P'
echo "AAAAAP" | grep '^*P'
But none of them seem to work, any help is much appreciated
thanks
Calypso (4 Replies)
Hello,
I'm working on unix with grep (GNU grep) 2.5.1. I'm going through some of the newer regex syntax using Regular Expression Reference - Advanced Syntax a guide.
ls -aLl /bin | grep "\(x\)"
Which works, just highlights 'x' where ever, when ever.
I'm trying to to get (?:) to work but... (4 Replies)
Hi to you all,
I'm just struggling with a regex problem and I'm pretty sure that I'm missing sth obvious... :confused:
I need a regex to feed my grep in order to find lines that contain one string but not the other.
Here's the data example:
2015-04-08 19:04:55,926|xxxxxxxxxx| ... (11 Replies)
Hi everyone,
I'm looking for a grep command to match the following pattern from a file:
<EGS>10234567<EGS>
I used this following command to do this:
grep -E '^<EGS>{8}<EGS>' test.txt
In output I got:
<EGS>10234567<EGS>
Till now it work, but if I add something at the end of the line... (2 Replies)
Discussion started by: Arnaudh78
2 Replies
LEARN ABOUT DEBIAN
string::parity
Parity(3) User Contributed Perl Documentation Parity(3)NAME
String::Parity, setEvenParity, setOddParity, setSpaceParity, setMarkParity, isEvenParity, isOddParity isSpaceParity, isMarkParity, Even-
Bytes, OddBytes, SpaceBytes, MarkBytes, showParity, showMarkSpace - Parity (odd/even/mark/space) handling functions
SYNOPSIS
use String::Parity;
use String::Parity qw(:DEFAULT /show/);
DESCRIPTION
setEvenParity LIST
Copies the elements of LIST to a new list and converts the new elements to strings of bytes with even parity. In array context
returns the new list. In scalar context joins the elements of the new list into a single string and returns the string.
setOddParity LIST
Like setEvenParity function, but converts to strings with odd parity.
setSpaceParity LIST
Like setEvenParity function, but converts to strings with space (High bit cleared) parity.
setMarkParity LIST
Like setEvenParity function, but converts to strings with mark (High bit set) parity.
EvenBytes LIST
Returns the number of even parity bytes in the elements of LIST.
OddBytes LIST
Returns the number of odd parity bytes in the elements of LIST.
SpaceBytes LIST
Returns the number of space parity bytes in the elements of LIST.
MarkBytes LIST
Returns the number of mark parity bytes in the elements of LIST.
isEvenParity LIST
Returns TRUE if the LIST contains no byte with odd parity, FALSE otherwise.
isOddParity LIST
Returns TRUE if the LIST contains no byte with even parity, FALSE otherwise.
isSpaceParity LIST
Returns TRUE if the LIST contains no byte with mark parity, FALSE otherwise.
isMarkParity LIST
Returns TRUE if the LIST contains no byte with space parity, FALSE otherwise.
showParity LIST
Like setEvenParity function, but converts bytes with even parity to 'e' and other bytes to 'o'. The function showParity must be
imported by a specialised import list.
showMarkSpace LIST
Like setEvenParity function, but converts bytes with space parity to 's' and other bytes to 'm'. The function showMarkSpace must
be imported by a specialised import list.
NOTES
Don't use this module unless you have to communicate with some old device or protocol. Please make your application 8 bit clean and use the
internationally standardised ISO-8859-1 character set.
AUTHOR
Winfried Koenig <win@in.rhein-main.de>
SEE ALSO perl(1), Exporter(1)perl v5.8.0 1996-12-10 Parity(3)