This notation is known as IPv4 CIDR notation. CIDR specifies an IP address range using a combination of an IP address and its associated network mask. CIDR notation uses the following format:
Code:
xxx.xxx.xxx.xxx/n
where n is the number of leftmost 1 bits in the mask.
Hello there,
I have a script that must be written in bash that has to deal with reading in values from a file (in scientific notation), and requires executing some mathematical operations with them. What is the easiest way to go about doing this/converting it to float to use | bc, etc.?
... (7 Replies)
Hi Friends,
I have following 50,000 records in .txt file.
I need to round field 3, 4, & 5 to 3 decimal places.
11|A123|-2.64216408856E01|3.64216408856E01|4.64216408856E-01
11|A123|0|-5.64216408856E01|0
11|A123|0|0|0
11|A123|-99999999|-99999999|-99999999... (4 Replies)
Hi,
I just want to sort my file with exponential notation. For example:
1;2;4;s
1;5e-01;4;s
1;1;4;s
I used sort -gk2, but it does not sort in the correct way. What's wrong? (15 Replies)
wondering if anyone has any thoughts to convert the below thru a shell script
Convert decimal signalling point notation to ANSI point code notation
There is a site that does that conversion but i need to implement the solution in a shell script.....Thoughts....
OS: Solaris 9
... (4 Replies)
This piece of code is in a shell script I'm trying to modify to run on my system.
sed s:nu\\t.\*:"nu=0"
It's clearly a substitute script which replaces nu\\t.\* with nu = 0.
What exactly does nu\\t.\* demarcate though-- I thought it was just the previous nu = xxxxx (which existed and is... (3 Replies)
Just a very brief question,
but I have a script written in a C-like language possibly tcl with the line
set var
...
...All I want to know, is ** multiplication or is it exponentiation?
What is the ** operator? (1 Reply)
echo 0.633588 1875 | awk '{print $1 * $2 * 1024}'
is there a better way to run the above command? it keeps printing out in notation and i do not want that at all.
when i run the above, i get:
1.21649e+06
OS: linux
language:bash (1 Reply)
Hello
I have two kinds of logs like
server.logserver.log.2013-07-27.001i want to create a variable which look like this (with a pipe)
log_name=server.(log|log.$YYYY-MM-DD.)But i tried many cases but it didn't work.
Is it possible ? If yes, can you help me. (6 Replies)
hello folks,
I have few values in a log which are in scientific notation.
I am trying to convert into actual decimal format or integer but couldn't able to convert.
Values in scientific notation:
1.1662986666666665E-4
2.0946799999999998E-4
3.0741333333333333E-6
5.599999999999999E-7... (2 Replies)
Discussion started by: scriptscript
2 Replies
LEARN ABOUT DEBIAN
mail::rfc822::address
Address(3pm) User Contributed Perl Documentation Address(3pm)NAME
Mail::RFC822::Address - Perl extension for validating email addresses according to RFC822
SYNOPSIS
use Mail::RFC822::Address qw(valid validlist);
if (valid("pdw@ex-parrot.com")) {
print "That's a valid address
";
}
if (validlist("pdw@ex-parrot.com, other@elsewhere.com")) {
print "That's a valid list of addresses
";
}
DESCRIPTION
Mail::RFC822::Address validates email addresses against the grammar described in RFC 822 using regular expressions. How to validate a user
supplied email address is a FAQ (see perlfaq9): the only sure way to see if a supplied email address is genuine is to send an email to it
and see if the user recieves it. The one useful check that can be performed on an address is to check that the email address is
syntactically valid. That is what this module does.
This module is functionally equivalent to RFC::RFC822::Address, but uses regular expressions rather than the Parse::RecDescent parser.
This means that startup time is greatly reduced making it suitable for use in transient scripts such as CGI scripts.
valid ( address )
Returns true or false to indicate if address is an RFC822 valid address.
validlist ( addresslist )
In scalar context, returns true if the parameter is an RFC822 valid list of addresses.
In list context, returns an empty list on failure (an invalid address was found); otherwise a list whose first element is the number of
addresses found and whose remaining elements are the addresses. This is needed to disambiguate failure (invalid) from success with no
addresses found, because an empty string is a valid list.
AUTHOR
Paul Warren, pdw@ex-parrot.com
CREDITS
Most of the test suite in test.pl is taken from RFC::RFC822::Address, written by Abigail, abigail@foad.org
COPYRIGHT and LICENSE
This program is copyright 2001-2002 by Paul Warren.
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to
the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of
the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
SEE ALSO
RFC::RFC822::Address, Mail::Address
perl v5.10.1 2002-04-13 Address(3pm)