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Shell Programming and Scripting
Arrays in awk
Post 302219004 by catwoman on Sunday 27th of July 2008 11:23:00 PM
07-28-2008
Arrays in awk
Hi, I've written the following code to manipulate the first 40 lines of a data file into my desired order:
#!/bin/awk -f
{ if (NR<=(4)){
a[NR]=a[NR]$0" "}
else { if ((NR >= (5)) && (NR <= (13))) {
b[NR%3]=b[NR%3]$0" " }
else {if ((NR >= (14)) && (NR <= (25))){
c[NR%3]=c[NR%3]$0" "}
else{if ((NR>=(26)) && (NR<=(40))){
d[NR%3]=d[NR%3]$0" "}
}}}}
END {{for (i in a)
{print a[i]} }
{for (i in b)
{ print b[i]} }
{for (i in c)
{print c[i]} }
{for (i in d)
{print d[i]} }}
However, I want to apply this sorting to every set of 40 lines in the data file, where the data files are 10000+ lines. I tried enclosing the entire code in a for loop but this didn't work as the a, b, c and d arrays in each block of 40 lines would have to change as well.
Can arrays be given numerical names so they could be incremented with each execution of the for loop?
Many thanks
#!/bin/awk -f
{ if (NR<=(4)){
a[NR]=a[NR]$0" "}
else { if ((NR >= (5)) && (NR <= (13))) {
b[NR%3]=b[NR%3]$0" " }
else {if ((NR >= (14)) && (NR <= (25))){
c[NR%3]=c[NR%3]$0" "}
else{if ((NR>=(26)) && (NR<=(40))){
d[NR%3]=d[NR%3]$0" "}
}}}}
END {{for (i in a)
{print a[i]} }
{for (i in b)
{ print b[i]} }
{for (i in c)
{print c[i]} }
{for (i in d)
{print d[i]} }}
However, I want to apply this sorting to every set of 40 lines in the data file, where the data files are 10000+ lines. I tried enclosing the entire code in a for loop but this didn't work as the a, b, c and d arrays in each block of 40 lines would have to change as well.
Can arrays be given numerical names so they could be incremented with each execution of the for loop?
Many thanks
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LEARN ABOUT DEBIAN
mkcover
MKCOVER(8) System Manager's Manual MKCOVER(8) NAME
mkcover - HylaFAX continuation cover page generation command SYNOPSIS
/var/spool/hylafax/bin/mkcover qfile template result DESCRIPTION
bin/mkcover is the command invoked by the facsimile server when a continuation cover page is required for an outbound job that is about to be retried. It generates a single POSTSCRIPT(R) page that is imaged according to the remote capabilities and transmitted as the cover page. The arguments are: qfile the job description file for the outbound job. template the cover page template file, as used by the faxcover(1) program. result the filename where the resultant POSTSCRIPT document should be written. The default mkcover command is a shell script that uses awk(1) to parse the job description file and generate the cover page document. The template file may be optionally compressed with compress(1), pack(1), or gzip(1); the filename suffix is used to decide whether or not the template file contains compressed data. SEE ALSO
faxq(8), hylafax-config(5), sendq(5) June 20, 1994 MKCOVER(8)