Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Can grep do numerical comparisons?
Top Forums UNIX for Dummies Questions & Answers Can grep do numerical comparisons? Post 302204415 by Uss_Defiant on Wednesday 11th of June 2008 01:16:26 PM
Old 06-11-2008
Quote:
Originally Posted by jim mcnamara
Sounds very like homework. You do realize we do not allow homework on the forums?
I wrote on a test that grep could do numerical comparisons and my teacher disagreed. He kindly gave me a chance to back up my statement, and suggested that I post in forums, which is what i'm trying to do now. If you deem that as homework, then fine, I do not however.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

numeric range comparisons

I have two files.And a sort of matrix analysis. Both files have a string followed by two numbers: File 1: A 2 7 B 3 11 C 5 10 ...... File 2: X 1 10 Y 3 5 Z 5 9 What I'd like to do is for each set of numbers in the second file indicate if the first or second number (or both) in... (7 Replies)
Discussion started by: dcfargo
7 Replies

2. Shell Programming and Scripting

Best practice for bracket comparisons?

So, I have no formal higher education in programming at all and am self taught. I am now wondering what would be considered best practices? Like should I hard code a variable, then compare it to what I want to know or achieve, or should I just put the commands with in the brackets? Example, a... (5 Replies)
Discussion started by: tlarkin
5 Replies

3. UNIX for Dummies Questions & Answers

Command comparisons

Hi guys, Im trying to figure out what is the difference between using a | and the command xargs ... examples of usage: 1) ls * | wc -w => this gives you the number of files in the current directory including all subdirectories 2) find . “*.log” | xargs grep ERROR => this gives... (6 Replies)
Discussion started by: avidrunner
6 Replies

4. Shell Programming and Scripting

String comparisons

Can someone please tell me what is wrong with this stings comparison? #!/bin/sh #set -xv set -u VAR=$(ping -c 5 -w 10 google.com | grep icmp_req=5 | awk '{print $6}') echo I like cookies echo $VAR if "$VAR" == 'icmp_req=5' then echo You Rock else echo You Stink fiThis is the error.... (6 Replies)
Discussion started by: cokedude
6 Replies

5. UNIX for Dummies Questions & Answers

Date comparisons

Hi, I want to perform a simple date comparisons, i.e. select all files modified after a certain date (say 12-feb-2011) I do not have the option of creating a file and using find's -newer option. Any simple way to do this? I can do this by reading the stat command's output and comparing... (10 Replies)
Discussion started by: jawsnnn
10 Replies

6. UNIX for Dummies Questions & Answers

File and if statement comparisons

I'd love to get help on this one please. Ok so say I have a file called README with lines such as this: index:index.html required:file1.1:file2.1:file3.1 I'm having trouble with writing an if statement that compares the items in a list with a file inside README, what I imagine in my head... (7 Replies)
Discussion started by: mistsong1
7 Replies

7. Shell Programming and Scripting

Pair wise comparisons

Hi, I have 25 groups and I need to perform all possible pairwise compariosns between them using the formula n(n-1)/2. SO in my case it will be 25(25-1)/2 which is equal to 300 comparisons. my 25 groups are FG1 FG2 FG3 FG4 FG5 NT5E CD44 CD44 CD44 AXL ADAM19 CCDC80 L1CAM L1CAM CD44... (1 Reply)
Discussion started by: Diya123
1 Replies

8. UNIX for Dummies Questions & Answers

How to use grep with numerical values?

I'm new to Unix and I have been trying to fix this problem for the past week. How would I use grep to display only certain numbers for a list. For example, if I have this list: Joe senior 4/50 John junior 25/50 Mary junior 41/50 Martha sophomore 2/50 ...How do I get a file... (1 Reply)
Discussion started by: PTcharger
1 Replies

9. Shell Programming and Scripting

File comparisons

Hi all, I want to compare two files based on column value Kindly help me a.txt 123,ABCD 456,DEF 789,SDF b.txt 123,KJI 456,LMN 321,MJK 678,KOL Output file should be like Common on both files c.txt 123,ABCD,KJI (8 Replies)
Discussion started by: aaysa123
8 Replies

10. Shell Programming and Scripting

String regex comparisons

Here is the sample code: str1="abccccc" str2="abc?" if ]; then echo "same string" else echo "different string" fi Given that ? implies 0 or 1 match of preceding character, I was expecting the output to be "different string", but I am seeing "same string". Am I not using the... (3 Replies)
Discussion started by: Rameshck
3 Replies

LEARN ABOUT DEBIAN

scolasync

SCOLASYNC(1)						       scolasync User Manual						      SCOLASYNC(1)

NAME

       scolasync - a file manager dedicated to dealing with a collection of removable media, like music mobile players. It makes easier to copy
       files to a set of removable media, and to copy files from them.

SYNOPSIS

       scolasync [{-c | --check}]

DESCRIPTION

       scolasync allows you to send a series of files towards a set of removable media. Every individual removable storage device is identified,
       for example to its owner. Then, later, you can retreive modified files from the same collection of removable media and track the
       modifications attributable to each owner.

       A possible usage is with students learning a foreign language: they are given homework on their USB sticks, and they bring them back with
       modified contents to get scores.

OPTIONS

       -c , --check
	   Enables checkboxes to select a subset of the usb storage media currently plugged to your computer, even if the checkboxes are not
	   wanted in the preferences of the application.

FILES

       ${HOME}/.scolasync/db
	   A database containing the preferences of the application, and the mapping between owners and USB storage media.

       /usr/share/scolasync/marques.py
	   A dictionary of pecularities which come with some brands of USB storage media.

       ${HOME}/.scolasync/marques.py
	   This dictionary overrides the settings in the system-wide configuration.

       ${HOME}/.scolasync/scolasync.log
	   A log file for the application.

AUTHOR

       Georges Khaznadar <georgesk@ofset.org>
	   Wrote this manpage for the Debian system.

COPYRIGHT

       Copyright (C) 2010 Georges Khaznadar

       This manual page was written for the Debian system (and may be used by others).

       Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 or (at
       your option) any later version published by the Free Software Foundation.

       On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.

scolasync							    06/23/2012							      SCOLASYNC(1)
All times are GMT -4. The time now is 07:26 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy