Which is the best way/command to do mathematics in UNIX scripting?
Hello all!
I used to use expr for doing simple mathematics, but has a main advantage and a main disadvantage:
The advantage is that it can take variables for numbers
The disadvantage is that it cannot give float numbers.It gives errors (example for 2 / 5 .......)
Somebody told me about bc but I cannot give him variables.The program I wanna make is similar to example {1} but I need float numbers!
if the program is like this:
bc gives error.The only way to avoid this error is this way:
But in this way you don't allow the user to choose himself the variables.
Somebody told me that
works, but unfortunately in my OS doesn't work(Ubuntu 9.10)
Any suggestions/ideas????
Hello guys!
Can say me anybody about operatios with unix, I don't to make operations, only inside in a variable, like this
#y=4
#x=2
#let z=$y-$x
#echo $z
# 2
but I can't to make mathematical operations with decimal like this
#y=3.2
#x=1.5
#let z=$y-$x
#echo $z
# 3
this... (2 Replies)
Hi Friends,
I am new to shell scripting and a trying to work this out.
I have a variable called $number.
The value in this variable is 10
I want to display $number - 2 in a mail. The result would be 8
eg.
mail -s 'subject' user <<eof
the result of your calculation is $number - 2... (2 Replies)
I've been able to generate output based on the code scarfake provided me (thanks again man).
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... (5 Replies)
Hi, i wish to learn unix commands and shell scripting.
platform is solaris. but i am focused more on handy unix commands than system administration.
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I have the following questions to be discussed here at this esteemed discussion forum.
I have two Excel sheets which contain Unix Commands llike creating directory the structure/ftp/Copy/Zip etc to basically create an environment. I need help in understanding some of... (1 Reply)
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Please excuse me for opening a new thread i am unable to find out the syntax error
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I have added a new experimental "Computer Science and Mathematics Trivia - True or False" section in the discussions, currently under the tags box.
In the future, I plan to
Expand this feature to add more trivia categories from math, science and technology.
Keep track of correct and... (20 Replies)
Discussion started by: Neo
20 Replies
LEARN ABOUT OSX
locale::codes::langext
Locale::Codes::LangExt(3pm) Perl Programmers Reference Guide Locale::Codes::LangExt(3pm)NAME
Locale::Codes::LangExt - standard codes for language extension identification
SYNOPSIS
use Locale::Codes::LangExt;
$lext = code2langext('acm'); # $lext gets 'Mesopotamian Arabic'
$code = langext2code('Mesopotamian Arabic'); # $code gets 'acm'
@codes = all_langext_codes();
@names = all_langext_names();
DESCRIPTION
The "Locale::Codes::LangExt" module provides access to standard codes used for identifying language extensions, such as those as defined in
the IANA language registry.
Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default IANA language
registry codes will be used.
SUPPORTED CODE SETS
There are several different code sets you can use for identifying language extensions. A code set may be specified using either a name, or
a constant that is automatically exported by this module.
For example, the two are equivalent:
$lext = code2langext('acm','alpha');
$lext = code2langext('acm',LOCALE_LANGEXT_ALPHA);
The codesets currently supported are:
alpha
This is the set of three-letter (lowercase) codes from the IANA language registry, such as 'acm' for Mesopotamian Arabic.
This is the default code set.
ROUTINES
code2langext ( CODE [,CODESET] )
langext2code ( NAME [,CODESET] )
langext_code2code ( CODE ,CODESET ,CODESET2 )
all_langext_codes ( [CODESET] )
all_langext_names ( [CODESET] )
Locale::Codes::LangExt::rename_langext ( CODE ,NEW_NAME [,CODESET] )
Locale::Codes::LangExt::add_langext ( CODE ,NAME [,CODESET] )
Locale::Codes::LangExt::delete_langext ( CODE [,CODESET] )
Locale::Codes::LangExt::add_langext_alias ( NAME ,NEW_NAME )
Locale::Codes::LangExt::delete_langext_alias ( NAME )
Locale::Codes::LangExt::rename_langext_code ( CODE ,NEW_CODE [,CODESET] )
Locale::Codes::LangExt::add_langext_code_alias ( CODE ,NEW_CODE [,CODESET] )
Locale::Codes::LangExt::delete_langext_code_alias ( CODE [,CODESET] )
These routines are all documented in the Locale::Codes::API man page.
SEE ALSO
Locale::Codes
The Locale-Codes distribution.
Locale::Codes::API
The list of functions supported by this module.
http://www.iana.org/assignments/language-subtag-registry
The IANA language subtag registry.
AUTHOR
See Locale::Codes for full author history.
Currently maintained by Sullivan Beck (sbeck@cpan.org).
COPYRIGHT
Copyright (c) 2011-2012 Sullivan Beck
This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.16.2 2012-10-11 Locale::Codes::LangExt(3pm)