Sponsored Content
Top Forums UNIX for Dummies Questions & Answers gawk asort to sort record groups based on one subfield Post 302711711 by Don Cragun on Sunday 7th of October 2012 10:56:26 PM
Old 10-07-2012
The versions of awk that I use (on OS X) don't have the asort() and asorti() functions, but I have read the gawk man page. Unlike the sort utility, there is no way to specify a sort key for these functions; they always sort the array using the entire contents of the string as the sort key. If you want to use asort() in gawk to sort with field 1 as your primary sort key and the second part of field 2 as your secondary key; you need to prepend each line in your array with primary and secondary sort fields, use asort() or asorti() to sort the modified records, and then strip off the added sort fields when you print (or otherwise process) the results.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Removing \n within a record (awk/gawk)

I am using a solution that was provided by a member: awk '{s=$0;if(length(s) < 700){getline; s=s " " $0}printf("%s\n",s)}' This scans through a file and removes '\n' within a record but not the record delimiter. However, there are instances where there are MULTIPLE instances of '\n'... (10 Replies)
Discussion started by: CKT_newbie88
10 Replies

2. Shell Programming and Scripting

Gawk / Awk Merge Lines based on Key

Hi Guys, After windows died on my netbook I installed Lubuntu and discovered Gawk about a month ago. After using Excel for 10+ years I'm amazed how quick and easily Gawk can process data but I'm stuck with a little problem merging data from multiple lines. I'm an SEO Consultant and provide... (9 Replies)
Discussion started by: Jamesfirst
9 Replies

3. Programming

Help with sort and keep data record to calculate N50 in c

Input_file_1 #content_1 A #content_2 AF #content_3 AAR #content_4 ASEI #content_5 AS #content_6 ADFSFGS Rules: 1. Based on c program to calculate content of each "#". Result getting from the above Input_file_1 are 1,2,3,4,2,7; 2. Sort length on reverse order (descending order).... (5 Replies)
Discussion started by: cpp_beginner
5 Replies

4. Shell Programming and Scripting

sort file specifying record length

I've been searching high and low for this...but, maybe I'm just missing something. I have a file to be sorted that, unfortunately, contains binary data at the end of the line. As you may guess, this binary data may contain a newline character, which messes up the sort. I think I could resolve this... (5 Replies)
Discussion started by: jcagle
5 Replies

5. Shell Programming and Scripting

AWK exclude first and last record, sort and print

Hi everyone, I've really searched for a solution to this and this is what I found so far: I need to sort a command output (here represented as a "cat file" command) and from the second down to the second-last line based on the second row and then print ALL the output with the specified section... (7 Replies)
Discussion started by: dentex
7 Replies

6. Shell Programming and Scripting

Don't understand AWK asort behaviour

Hello, I have the following script : BEGIN { print "1 ***"; split("abc",T,""); T="e"; T="z"; T="y"; for (i in T) printf("%i:%s ",i,T); print ""; for (i=1; i<=length(T); i++) printf(T); print "" print "2 ***"; asort(T,U); for (i in U) printf("%i:%s ",i,U); ... (3 Replies)
Discussion started by: jgilot
3 Replies

7. Shell Programming and Scripting

Match groups of capital words using gawk

Hi I'd like to extract from a text file, using gawk, the groups of words beginning with a capital letter, that are not at the begining of a sentence (i.e. Not after a full stop and a pace ". "), including special characters like registered or trademark (® or ™ ). For example I would like to... (1 Reply)
Discussion started by: louisJ
1 Replies

8. Shell Programming and Scripting

Sort html based on .jar, .war file names and still keep text within three groups.

Output from zipdiff GNU EAR comparison tool produces output in html divided into three sections "Added, Removed, Changed". I want the output to be sorted by jar or war file. <html> <body> <table> <tr> <td class="diffs" colspan="2">Added </td> </tr> <tr><td> <ul>... (5 Replies)
Discussion started by: kchinnam
5 Replies

9. UNIX for Beginners Questions & Answers

Gawk: PROCINFO["sorted_in"] does not sort my numerical array values

Hi, PROCINFO seems to be a great function but I don't manage to make it works. input: B,A,C B B,B As an example, just want to count the occurence of each letter across the input and sort them by decreased order. Wanted output: B 4 A 1 C 1 When I use this command, the PROCINFO... (4 Replies)
Discussion started by: beca123456
4 Replies

10. Shell Programming and Scripting

Best way to sort file with groups of text of 4-5 lines by the first one

Hi, I have some data I have taken from the internet in the following scheme: name direction webpage phone number open hours menu url book url name ... Of course the only line that is mandatory is the name wich is the one I want to sort by. I have the following sed & awk script that... (3 Replies)
Discussion started by: devmsv
3 Replies
sortbib(1)						      General Commands Manual							sortbib(1)

Name
       sortbib - sort bibliographic database

Syntax
       sortbib [-sKEYS] database...

Description
       The  command sorts files of records containing refer key-letters by user-specified keys.  Records may be separated by blank lines, or by .[
       and .] delimiters, but the two styles may not be mixed together.  This program reads through each database and pulls out key fields,  which
       are  sorted  separately.   The sorted key fields contain the file pointer, byte offset, and length of corresponding records.  These records
       are delivered using disk seeks and reads, so may not be used in a pipeline to read standard input.

       By default, alphabetizes by the first %A and the %D fields, which contain the senior author and date.  The -s option is used to specify new
       KEYS.  For instance, -sATD will sort by author, title, and date, while -sA+D will sort by all authors, and date.  Sort keys past the fourth
       are not meaningful.  No more than 16 databases may be sorted together at one time.  Records longer than 4096 characters will be truncated.

       The command sorts on the last word on the %A line, which is assumed to be the author's last name.  A word in the final  position,  such	as
       ``jr.''	or  ``ed.'',  will be ignored if the name beforehand ends with a comma.  Authors with two-word last names or unusual constructions
       can be sorted correctly by using the convention ``'' in place of a blank.  A %Q field is considered to be the same as %A, except  sorting
       begins  with  the first, not the last, word.  The command sorts on the last word of the %D line, usually the year.  It also ignores leading
       articles (like ``A'' or ``The'') when sorting by titles in the %T or %J fields; it will ignore articles of any  modern  European  language.
       If a sort-significant field is absent from a record, places that record before other records containing that field.

Options
       -sKEYS
	  Specifies new sort KEYS.  For example, ATD sorts by author, title, and date.

See Also
       addbib(1), indxbib(1), lookbib(1), refer(1), roffbib(1)

																	sortbib(1)
All times are GMT -4. The time now is 10:42 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy