Sponsored Content
Full Discussion: Even numbers from text file
Top Forums Shell Programming and Scripting Even numbers from text file Post 302386152 by gaurav1086 on Monday 11th of January 2010 01:10:03 PM
Old 01-11-2010
Tools

Quote:
Originally Posted by ahmad.diab
will this test fail if you have alphanumaric field? ...in my test it will not.
The file is supposed to have only numeric values. Again if it doesnt comply then
Image
Code:
perl -wlne 'print if ((/[0-9]+/)&&!($_ % 2))' infile

or
Code:
perl -we 'print grep {/[0-9]+/ && $_ % 2 ==0 } <>' even

Piece of Cake. Smilie

Regards.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

how to print out line numbers of a text file?

i have this text file name test.txt which contain : aaaaa bbb iiiiiiiiiiiii ccf ddaaa ddd and i need a script that can print out the line numbers using a while loop.. so when the script is run..it will have this: 1 2 3 any ideas? :) thanks guys (4 Replies)
Discussion started by: forevercalz
4 Replies

2. UNIX for Dummies Questions & Answers

Retrieving random numbers out of a text file

Hi one and all, I'm working on a Bash script that is designed to calculate how much IP traffic has passed through a port to determine traffic volume over a given amount of time. I've currently been able to use the netstat -s command coupled with grep to write to a file the total packets... (13 Replies)
Discussion started by: nistleloy
13 Replies

3. Shell Programming and Scripting

how to add line numbers in text file

Hi all How to add line numbers in text file.. ex abcd cdef result 1. abcd 2. cdef thx in advance (4 Replies)
Discussion started by: suryanarayana
4 Replies

4. Shell Programming and Scripting

Inserting a range of consecutive numbers into a text file

I have a text file in the following format .... START 1,1 2,1 3,1 .. .. 9,1 10,1 END .... I want to change to the output to .... START 1,1 2,1 3,1 .. (4 Replies)
Discussion started by: VNR
4 Replies

5. Shell Programming and Scripting

Extract numbers from text file work out average

Just wondering if someone could assist me with shell script I'm trying to write. I need to read the final column of a text file (shown below) and workout what the average number is. The text file will have a variable number of lines, I just want the script to pull out the values in the final field... (14 Replies)
Discussion started by: rich@ardz
14 Replies

6. UNIX for Dummies Questions & Answers

Print numbers and associated text belonging to an interval of numbers

##### (0 Replies)
Discussion started by: lucasvs
0 Replies

7. Shell Programming and Scripting

How to find numbers in text file?

Hi I have a text file with rows like this: 7 Herman ASI-40 Jungle (L) Blueprint (L) Weapon Herman ASI-40 Jungle (L) 215.00 57 65.21 114.41 and 9 Herman CAP-505 (L) Blueprint (L) Weapon Herman CAP-505 (L) 220.00 46.84 49.1 104.82 and 2 ClericDagger 1C blueprint Melee - Shortblade... (2 Replies)
Discussion started by: pesa
2 Replies

8. UNIX for Dummies Questions & Answers

Extracting lines from a text file based on another text file with line numbers

Hi, I am trying to extract lines from a text file given a text file containing line numbers to be extracted from the first file. How do I go about doing this? Thanks! (1 Reply)
Discussion started by: evelibertine
1 Replies

9. UNIX for Dummies Questions & Answers

Adding a column to a text file with row numbers

Hi, I would like to add a new column containing the row numbers to a text file. How do I go about doing that? Thanks! Example input: A X B Y C D Output: A X 1 B Y 2 C D 3 (5 Replies)
Discussion started by: evelibertine
5 Replies

10. Shell Programming and Scripting

How to add line numbers (multiples of 5: 0,5,10,15,20) to a text file?

Hi, I need to number the lines in my text file. I know how to do this with standard numbering (1,2,3,4, etc) but I need to count in multiples of 5, beginning 0,5,10,15... example existing file: abcd efg hijklm nopqrs desired output 0 abcd 5 efg 10 hijklm 15 ... (11 Replies)
Discussion started by: livbaddeley
11 Replies
niserror(1)							   User Commands						       niserror(1)

NAME
niserror - display NIS+ error messages SYNOPSIS
niserror error-num DESCRIPTION
niserror prints the NIS+ error associated with status value error-num on the standard output. It is used by shell scripts to translate NIS+ error numbers that are returned into text messages. EXAMPLES
Example 1: Using niserror The following example prints the error associated with the error number 20: example% niserror 20 Not Found, no such name ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWnisu | +-----------------------------+-----------------------------+ SEE ALSO
nis+(1), nis_error(3NSL), attributes(5) NOTES
NIS+ might not be supported in future releases of the SolarisTM Operating Environment. Tools to aid the migration from NIS+ to LDAP are available in the Solaris 9 operating environment. For more information, visit http://www.sun.com/directory/nisplus/transition.html. SunOS 5.10 10 Dec 2001 niserror(1)
All times are GMT -4. The time now is 10:19 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy