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Top Forums Shell Programming and Scripting awk sed cut? to rearrange random number of fields into 3 fields Post 302311410 by rubin on Tuesday 28th of April 2009 02:44:44 PM
Old 04-28-2009
Quote:
Originally Posted by axo959
...
I'd like to move the last field to the second position. Then enclose the remaining fields into one field with double quotes. Only if more than one period though (see third record for example of a record with only 1 period). So basically I need to get it looking like this (header row just fyi):

sid,bldg,periods
250,45,"1, 2, 3"
255,45,"2, 4, 6, 8, 10"
1005,50,1
2099,51,"1, 2"

...
I'm on hp-ux, so just awk is avail to me. (no gawk or nawk)

thanks in advance for any suggestions

Assuming the given file format:

Code:
awk -F, '{ if(NF>3){ $1=$1 FS $NF; $2=q $2; $NF=q; sub(/,"$/,q) }
            else { $0=$1 FS $3 FS $2 } } 1'  q='"'  OFS=, filename


_____

HP-UX's awk chokes for huge files ( if so, think of a different tool ).
 

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IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME
igawk - gawk with include files SYNOPSIS
igawk [ all gawk options ] -f program-file [ -- ] file ... igawk [ all gawk options ] [ -- ] program-text file ... DESCRIPTION
Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1). AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like @include getopt.awk in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path. OPTIONS
See gawk(1) for a full description of the AWK language and the options that gawk supports. EXAMPLES
cat << EOF > test.awk @include getopt.awk BEGIN { while (getopt(ARGC, ARGV, "am:q") != -1) ... } EOF igawk -f test.awk SEE ALSO
gawk(1) Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995. AUTHOR
Arnold Robbins (arnold@skeeve.com). Free Software Foundation Nov 3 1999 IGAWK(1)
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