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using the getline to populate an array from a file

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# 1  
Old 03-02-2005
CPU & Memory using the getline to populate an array from a file
Hello,

I am trying to use the awk getline command to populate an array from a flat file.

Has anyone done this before?

So we have file1:

a
b
c
d

I want to create an array like index[x] that contains these four elements
# 2  
Old 03-02-2005
Why use awk? I can't test it right now but wouldn't :

set -A index $(cat yourfile)

do the trick or do you want to load yourfile while inside an awk program ?
# 3  
Old 03-02-2005
I wouldn't bother with getline...

Code:
$ cat > awk_script
#!/usr/bin/awk -f
{
  a[i++]=$0
}
END {
  for ( x = 0; x < NR; x++  ) {
    print "Element is..." , a[x]
  }
}
$ chmod +x ./awk_script
$ ./awk_script ./file1
Element is... a
Element is... b
Element is... c
Element is... d

Cheers
ZB
# 4  
Old 03-02-2005
when executing this is get: i++: bad number
# 5  
Old 03-02-2005
Quote:
Originally Posted by domivv
Why use awk? I can't test it right now but wouldn't :

set -A index $(cat yourfile)

do the trick or do you want to load yourfile while inside an awk program ?

I need to load the file whilst inside the awk program
# 6  
Old 03-02-2005
Quote:
Originally Posted by penfold
when executing this is get: i++: bad number
if on Solaris, try using nawk like so:
Code:
#!/usr/bin/nawk -f

# 7  
Old 03-02-2005
i'm running on AIX, i've tried so many variations but can't get to the bottom of this , any help appriciated
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