Sponsored Content
Full Discussion: Arithmetic: how to??
Top Forums UNIX for Dummies Questions & Answers Arithmetic: how to?? Post 302376491 by Muhammad Rahiz on Tuesday 1st of December 2009 01:55:00 PM
Old 12-01-2009
For a start, I'd like to total from all files. But I'd also like to perform other calculations like averaging etc.

Each file contains a 2000x2000 matrix. There are 1000 of such files. I'm giving a brief illustration of what I want to do and the desired output.

Code:
File1                 File2            Output
1 1 1                2 2 2            3 3 3
1 1 1      +        2 2 2      =    3 3 3
0 0 0                1 1 1            1 1 1

Of course, I want to perform the function for all 1000 files.

I hope this illustration helps. There is a similar thread in this forum but I can't seem to remember it.

...

---------- Post updated at 06:23 PM ---------- Previous update was at 06:21 PM ----------

The layout messed up my formatting. Here it is again.

File1 + File2 = output

File1
Code:
1 1 1
1 1 1
0 0 0

File2
Code:
2 2 2
2 2 2
1 1 1

Output
Code:
3 3 3
3 3 3
1 1 1



---------- Post updated at 06:55 PM ---------- Previous update was at 06:23 PM ----------

Found the link to simillar thread;
https://www.unix.com/shell-programmin...two-files.html

Which part of the code should I modify in order to
1. include all 1000 files?
2. perform other functions e.g. multiplication, subtraction, division

Thanks

Last edited by radoulov; 12-01-2009 at 02:24 PM.. Reason: Please use code tags!
 

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

time arithmetic

Can anyone help please. I am writing a kourne shell script and I am unsure how to do the following: I have extracted a time string from a logfile, and I have another time string I want to compare it to to see if it's later than the time I'm comparing with. i.e. expectedSLA="23:00:00", ... (2 Replies)
Discussion started by: csong2
2 Replies

2. Shell Programming and Scripting

Can I use wc -l with arithmetic expression?

Folks, I am wondering that i can use something like this in one line. For example, $((cat filename > wc -l) / 2) It doesn't work; how to get it work using command substitution? Moreover, is there any option for wc -l not to return filename after the line counts? wc -l filename would... (3 Replies)
Discussion started by: lalelle
3 Replies

3. Shell Programming and Scripting

Help with arithmetic operation

I am using egrep to extract numbers from a file and storing them as variables in a script. But I am not able to do any arithmetic operations on the variables using "expr" because it stores them as char and not integers. Here is my code and the error I get. Any help will be appreciated. #!/bin/sh... (3 Replies)
Discussion started by: emjayshaikh
3 Replies

4. Shell Programming and Scripting

arithmetic in tcsh

Yes I know tcsh sucks for scripting and arithmetic but I have to write a script for multiple users and they all use tcsh. I have this variable that I 'set' with but pulling numbers off of stings with set STUFF = `grep string file | awk command` Now I would like to add up the numbers that... (4 Replies)
Discussion started by: gobi
4 Replies

5. UNIX for Dummies Questions & Answers

Arithmetic Operators

Hello, I have a list of 'inputs' and i want to convert those on the second list named 'Desired Outputs', but i don't know how to do it? Inputs Desired Outputs 1 2 94 4 276 8 369 10 464 12 ... (0 Replies)
Discussion started by: filda
0 Replies

6. Shell Programming and Scripting

Arithmetic on timestamps

Hi Friends, please advise on shell script to add two time stamps for example : a=12:32 b=12:00 c=a+b=00:32 please help me to find shell script to add to two time stamps, as i need to convert time from EST to GMT or SST to prepare status of jobs in unix and to specify estimated time to... (3 Replies)
Discussion started by: balireddy_77
3 Replies

7. UNIX for Dummies Questions & Answers

String Arithmetic ?

Hello Experts, In my shell I need to perform some simple subtraction on a value returned as a result of the "wc" command. The code: scanFromLine="100" ## This is returned as string as a result of some operation totalLines=`wc -l "${latestLogFile}" | awk '{print $1}'` ## eg: 200 ... (2 Replies)
Discussion started by: hkansal
2 Replies

8. Shell Programming and Scripting

csh arithmetic ?

Hello, Could someone explain how this one is possible: # @ x = 10 - 11 + 3 # echo $x -4 I know that writing script using csh is bad idea, but I need to write few lines. thanks Vilius (2 Replies)
Discussion started by: vilius
2 Replies

9. Programming

Pointer Arithmetic In C

I have a fundamental question on C pointer arithmetry.. Suppose i have a c string pointer already pointing to a valid location, Can I just do a charptr = charptr +1; to get to the next location, irregardless if my program is 32 or 64 bits? or should i do it this way: charptr =... (1 Reply)
Discussion started by: Leion
1 Replies

10. Shell Programming and Scripting

Arithmetic with bash

I need to divide the number of white spaces by total number of characters in a file using bash. I am able to get the number of white spaces correctly using: tr -cd < afile | wc -c I am also able to get the total number of characters using: wc -c afile How do I divide the first... (2 Replies)
Discussion started by: ngabrani
2 Replies
Locale::Codes::LangVar(3pm)				 Perl Programmers Reference Guide			       Locale::Codes::LangVar(3pm)

NAME
Locale::Codes::LangVar - standard codes for language variation identification SYNOPSIS
use Locale::Codes::LangVar; $lvar = code2langvar('acm'); # $lvar gets 'Mesopotamian Arabic' $code = langvar2code('Mesopotamian Arabic'); # $code gets 'acm' @codes = all_langvar_codes(); @names = all_langvar_names(); DESCRIPTION
The "Locale::Codes::LangVar" module provides access to standard codes used for identifying language variations, 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 variations. 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: $lvar = code2langvar('en','alpha-2'); $lvar = code2langvar('en',LOCALE_CODE_ALPHA_2); The codesets currently supported are: alpha This is the set of alphanumeric codes from the IANA language registry, such as 'arevela' for Eastern Armenian. This code set is identified with the symbol "LOCALE_LANGVAR_ALPHA". This is the default code set. ROUTINES
code2langvar ( CODE [,CODESET] ) langvar2code ( NAME [,CODESET] ) langvar_code2code ( CODE ,CODESET ,CODESET2 ) all_langvar_codes ( [CODESET] ) all_langvar_names ( [CODESET] ) Locale::Codes::LangVar::rename_langvar ( CODE ,NEW_NAME [,CODESET] ) Locale::Codes::LangVar::add_langvar ( CODE ,NAME [,CODESET] ) Locale::Codes::LangVar::delete_langvar ( CODE [,CODESET] ) Locale::Codes::LangVar::add_langvar_alias ( NAME ,NEW_NAME ) Locale::Codes::LangVar::delete_langvar_alias ( NAME ) Locale::Codes::LangVar::rename_langvar_code ( CODE ,NEW_CODE [,CODESET] ) Locale::Codes::LangVar::add_langvar_code_alias ( CODE ,NEW_CODE [,CODESET] ) Locale::Codes::LangVar::delete_langvar_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::LangVar(3pm)
All times are GMT -4. The time now is 10:50 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy