Sponsored Content
Top Forums UNIX for Beginners Questions & Answers Copy last few lines of a file, perform math operation and iterate further Post 303031219 by MadeInGermany on Sunday 24th of February 2019 04:57:32 AM
Old 02-24-2019
At least you should consider a pipe and no cat, while in this case the input file and output file are identical, so you need one temp file.
Code:
   tail -8 MWE.txt >i
   awk '{print $1, $2+1, $3+1, $4+1, $5+1}' i >> MWE.txt


Last edited by MadeInGermany; 02-24-2019 at 06:52 AM..
This User Gave Thanks to MadeInGermany For This Post:
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to perform arithmetic operation on date

Hi all, I would appreciate if anyone knows how to perform adding to date. As for normal date, i can easily plus with any number. But when it comes to month end say for example 28 Jun, i need to perform a plus with number 3, it will not return 1 Jul. Thanks in advance for your help. (4 Replies)
Discussion started by: agathaeleanor
4 Replies

2. Emergency UNIX and Linux Support

Logic for file copy operation

Hi, i need to copy contents from source to destination with a few conditions, Please helpme out. Sample input file $>cat testfile.txt /a/b/c/d | /e/f/g/d (d can be either a file or directory) my conditions are: check if destination is valid and if its a file or directory if its a... (5 Replies)
Discussion started by: raghu_shekar
5 Replies

3. Shell Programming and Scripting

Enter third column & Perform Operation

I am trying to enter a third column in this file, but the third column should that I call "Math" perform a some math calculations based on the value found in column #2. Here is the input file: Here is the desired output: Output GERk0203078$ Levir Math Cotete_1... (5 Replies)
Discussion started by: Ernst
5 Replies

4. Shell Programming and Scripting

awk math operation on two files

Hi, I need your help. I've got two files and i need to add 2nd line after occurrence of "Group No X" from data2.txt to 3rd line (after occurrence of "Group No X") from data1.txt. There is the same number of "Groups" in both files and the numbers of groups have the same pattern. data1.txt Group... (2 Replies)
Discussion started by: killerbee
2 Replies

5. Shell Programming and Scripting

[Solved] Perform an operation to all directories

Sorry, about this thread - I solved my own problem! Thanks for taking a look. edit by bakunin: no problem, but it would have been a nice touch to actually tell us what the solution was. This would have been slightlich more educating than just knowing that you found it. I changed your title to... (0 Replies)
Discussion started by: Blue Solo
0 Replies

6. Homework & Coursework Questions

Using dbms_pipe with C++ to perform daabase operation

I am getting two result: string and int in c++ code. That I want to store into database. The request which generates result is very frequent. So each time performing db operation to store the result is costly for me. So how this can be achived using dbms_sql? I dont have any experience and how... (1 Reply)
Discussion started by: karimkhan
1 Replies

7. Shell Programming and Scripting

How To Perform Mathematical Operation Within If in awk?

Hi All, I am using an awk script as below: awk -F'|' 'BEGIN{OFS="|";} { if ($1==$3 && $3==$7 && $7==$13 && $2==$6 && $6==$11 && $15-$14+1==$11) print $0"|""TRUE"; else print $0"|""FALSE"; }' tempfile.txt In above script, all conditions are being checked except the one which is... (4 Replies)
Discussion started by: angshuman
4 Replies

8. Shell Programming and Scripting

awk --> math-operation in a array

Hi main object is categorize the difference of data-values (TLUFT02B - TLUFT12B). herefor i read out data-files which are named acording to the timeformat yyyymmddhhmm. WR030B 266.48 Grad 0 WR050B 271.46 Grad 0 WR120B 268.11 Grad 0 WV030B 2.51 m/s ... (6 Replies)
Discussion started by: IMPe
6 Replies

9. Shell Programming and Scripting

awk --> math-operation in data-record and joining with second file data

Hi! I have a pretty complex job - at least for me! i have two csv-files with meassurement-data: fileA ...... (2 Replies)
Discussion started by: IMPe
2 Replies

10. Shell Programming and Scripting

awk script to find data in three file and perform replace operation

Have three files. Any other approach with regards to file concatenation or splitting, etc is appreciated If column55(billngtype) of file1 contains YMNC or YPBC then pick the value of column13(documentnumber). Now find this documentnumber in column1(Billdoc) of file2 and grep the corresponding... (4 Replies)
Discussion started by: as7951
4 Replies
math::roman(1.0)														  math::roman(1.0)

__________________________________________________________________________________________________________________________________________________

NAME
math::roman - Tools for creating and manipulating roman numerals SYNOPSIS
package require Tcl 8.3 package require math::roman ?1.0? ::math::roman::toroman i ::math::roman::tointeger r ::math::roman::sort list ::math::roman::expr args _________________________________________________________________ DESCRIPTION
::math::roman is a pure-Tcl library for converting between integers and roman numerals. It also provides utility functions for sorting and performing arithmetic on roman numerals. This code was originally harvested from the Tcler's wiki at http://wiki.tcl.tk/1823 and as such is free for any use for any purpose. Many thanks to the ingeneous folk who devised these clever routines and generously contributed them to the Tcl community. While written and tested under Tcl 8.3, I expect this library will work under all 8.x versions of Tcl. COMMANDS
::math::roman::toroman i Convert an integer to roman numerals. The result is always in upper case. The value zero is converted to an empty string. ::math::roman::tointeger r Convert a roman numeral into an integer. ::math::roman::sort list Sort a list of roman numerals from smallest to largest. ::math::roman::expr args Evaluate an expression where the operands are all roman numerals. Of these commands both toroman and tointeger are exported for easier use. The other two are not, as they could interfer or be confused with existing Tcl commands. BUGS, IDEAS, FEEDBACK This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category math :: roman of the Tcllib SF Trackers [http://sourceforge.net/tracker/?group_id=12883]. Please also report any ideas for enhancements you may have for either package and/or documentation. KEYWORDS
conversion, integer, roman numeral COPYRIGHT
Copyright (c) 2005 Kenneth Green <kenneth.green@gmail.com> Tcl Math Library math math::roman(1.0)
All times are GMT -4. The time now is 12:00 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy