question about using arrays

[dido78]

Can someone explain to me why the following code first prints an unfiltered output then the filtered one? Thanks.

df -k | /usr/xpg4/bin/awk -v maxpct=$1 '/^[^F]/

{ array[i++] = $6; arr3[j++] = $3; arr2[k++] = $2;}

END {
for ( i=1 ; i<=j; i++ )
{
if ( arr2 != 0 )
arraypct = ( arr3 / arr2 * 100 )
else
arraypct = 0
if ( arraypct > maxpct )
print array"\n", arraypct"\n\n"
}

}

'

 

[Annihilannic]

Take out the carriage return after /^[^F]/. awk expects the code that follows the expression to be immediately after it on the same line. You could use this layout if you prefer:

[tt]/^[^F]/ {
array[i++] = $6; arr3[j++] = $3; arr2[k++] = $2;
}[/tt]


Annihilannic.

 

[Annihilannic]

To explain further... the default action awk takes if it finds a matching expression and no code after it is to simply print the line, hence the output you were getting.

Additionally the code you had on a separate line would be executed for every line of input, because no expression was specified before it.

Annihilannic.