Search Results

Why do you need it one line?

Here is what you have done wrong.
awk ' {a[++i]=$0; l=i } END { for(j=l; j>=1; j--) { if(a[j] ~ /and/ && !f) { sub("and",x,a[j]); f=1; } } for(i=1; i<=l; i++) print...

Here is an awk program to remove last occurrence of pattern and from a file:
awk ' {
a[++i]=$0
l = i;
} END {
for(j=l; j>=1; j--)
{
if(a[j] ~...

Sorry, then I'm out of ideas. $ t="on a.id1 = b.id1 and
on a.id2 = b.id2 and
on a.id3 = b.id3 and"

$ echo "$t"
on a.id1 = b.id1 and
on a.id2 = b.id2 and
on a.id3 = b.id3 and

$ echo...