Sponsored Content
Top Forums Shell Programming and Scripting Extracting records with unique fields from a fixed width txt file Post 302165872 by KevinADC on Saturday 9th of February 2008 03:43:41 PM
Old 02-09-2008
Quote:
#Please describe what is going on here.
$names{"$first,$last"}={count => ++$count{"$first,$last"},
name => "$first $mi $last $state",
};
I'll try....

$names{"$first,$last"} creates a hash key from the first and last name.

its' value is in turn a hash:

Code:
$names{"$first,$last"} = {count=>'' , name => '' };

the "count" keys value is the value of another hash: %count, which is keeping count of how many times the first,last names are found:

Code:
++$count{"$first,$last"}

so we can determine later if it is a unique combination or not. If it has a count of 1 (one) then it is unique.

the "name" keys is just the original line from the file which we use to print to the output file if the value of the "count" key is 1 (one).

You can uncomment the lines that say to "uncomment for debugging" and you will see the data structure of %names printed when the script finishes running.
 

10 More Discussions You Might Find Interesting

1. UNIX Desktop Questions & Answers

Help with Fixed width File Parsing

I am trying to parse a Fixed width file with data as below. I am trying to assign column values from each record to variables. When I parse the data, the spaces in all coumns are dropped. I would like to retain the spaces as part of the dat stored in the variables. Any help is appreciated. I... (4 Replies)
Discussion started by: sate911
4 Replies

2. Shell Programming and Scripting

summing up the fields in fixed width file

Hi, I have a fixed width file with some records as given below: " 1000Nalsdjflj243324jljlj" "-0300Njfowjljl309933fsf" " 0010Njsfsjklj342344fsl" I want to sum-up first field values(i.e from 2nd character to 6th character)of each record. so for the above file i want to add (1000 - 300+... (2 Replies)
Discussion started by: srilaxmi
2 Replies

3. Shell Programming and Scripting

Fixed-Width file from Oracle

Hi All, I have created a script which generates FIXED-WIDTH file by executing Oracle query. SELECT RPAD(NVL(col1,CHR(9)),20)||NVL(col2,CHR(9))||NVL(col3,CHR(9) FROM XYZ It generates the data file with proper alignment. But if same file i transfer to windows server or Mainframe... (5 Replies)
Discussion started by: Amit.Sagpariya
5 Replies

4. Shell Programming and Scripting

Manupulating Records in a fixed width file

I am trying to determine what would be a fast and simple way to manipulate data that comes in a fixed width format. This data has 6 segments within a record. Each record needs to written out with a header and the 6 segments. Based on the value in column #6 the fields will be defined accordingly.... (4 Replies)
Discussion started by: Muga801
4 Replies

5. Shell Programming and Scripting

Comparing two fixed width file

Hi Guys I am checking the treads to get the answer but i am not able to get the answer for my question. I have two files. First file is a pattern file and the second file is the file i want to search in it. Output will be the lines from file2. File1: P2797f12af 44751228... (10 Replies)
Discussion started by: anshul_er
10 Replies

6. Shell Programming and Scripting

Apply condition on fixed width file and filter records

Dear members.. I have a fixed width file. Requirement is as below:- 1. Scan each record from this fixed width file 2. Check for value under field no "6" equals to "ABC". If yes, then filter this record into the output file Please suggest a unix command to achieve this, my guess awk might... (6 Replies)
Discussion started by: sureshg_sampat
6 Replies

7. Shell Programming and Scripting

variable fixed-width fields

Hi there, CTL Port IO Rate(IOPS) Read Rate(IOPS) Write Rate(IOPS) Read Hit(%) Write Hit(%) Trans. Rate(MB/S) Read Trans. Rate(MB/S) Write Trans. Rate(MB/S) 09:36:48 0 A 136 0 135 97 100 ... (6 Replies)
Discussion started by: gray380
6 Replies

8. Shell Programming and Scripting

How to parse fixed-width columns which may include empty fields?

I am trying to selectively display several columns from a db2 query, which gives me a fixed-width output (partial output listed here): --------- -------------------------- ------------ ------ 000 0000000000198012 702 29 000 0000000000198013 ... (9 Replies)
Discussion started by: ahsh79
9 Replies

9. UNIX for Dummies Questions & Answers

Length of a fixed width file

I have a fixed width file of length 53. when is try to get the lengh of the record of that file i get 2 different answers. awk '{print length;exit}' <File_name> The above code gives me length 50. wc -L <File_name> The above code gives me length 53. Please clarify on... (2 Replies)
Discussion started by: Amrutha24
2 Replies

10. Shell Programming and Scripting

Alter Fixed Width File

Thank u so much .Its working fine as expected. ---------- Post updated at 03:41 PM ---------- Previous update was at 01:46 PM ---------- I need one more help. I have another file(fixed length) that will get negative value (ex:-00000000003000) in postion (98 - 112) then i have to... (6 Replies)
Discussion started by: vinus
6 Replies
XkbFreeGeomOverlayKeys(3)					   XKB FUNCTIONS					 XkbFreeGeomOverlayKeys(3)

NAME
XkbFreeGeomOverlayKeys - Free keys in an overlay row SYNOPSIS
void XkbFreeGeomOverlayKeys (XkbRowPtr row, int first, int count, Bool free_all); ARGUMENTS
- row row in which keys should be freed - first first key to be freed - count number of keys to be freed - free_all True => all keys are freed DESCRIPTION
Xkb provides a number of functions to allocate and free subcomponents of a keyboard geometry. Use these functions to create or modify key- board geometries. Note that these functions merely allocate space for the new element(s), and it is up to you to fill in the values explicitly in your code. These allocation functions increase sz_* but never touch num_* (unless there is an allocation failure, in which case they reset both sz_* and num_* to zero). These functions return Success if they succeed, BadAlloc if they are not able to allocate space, or BadValue if a parameter is not as expected. If free_all is True, all keys are freed regardless of the value of first and count. Otherwise, the number of keys specified by count are freed, beginning with the key specified by first in the specified row. RETURN VALUES
Success The XkbFreeGeomOverlayKeys function returns Success if there are no allocation or argument errors. DIAGNOSTICS
BadAlloc Unable to allocate storage BadValue An argument is out of range X Version 11 libX11 1.3.2 XkbFreeGeomOverlayKeys(3)
All times are GMT -4. The time now is 03:38 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy