Question

I have a file like this:

ABC1  OBJECT-TYPE
...
...
KEY { XYZ1 }
...
...

ABC2  OBJECT-TYPE
...
...
ABC3  OBJECT-TYPE
...
...
KEY { XYZ3 }
...
...

My first search word is KEY (as its occurs less in a file) and second search word is OBJECT-TYPE. OBJECT-TYPE can occur few lines (may be 5 or 10) above the line with KEY. If a KEY is found in a file, I need output that has the key-value and corresponding object-type-value.

Exactly like:

ABC1 KEY1

ABC2 KEY2

Answer 1

Assuming that you want all keys for all objects, and keys are listed below objects, this is how you might do it:

awk '/OBJECT-TYPE/ { obj= $1 } /KEY { .* }/ { print obj, $3 }' file.txt

output:

ABC1 XYZ1
ABC3 XYZ3

In case you only want the keys of the first object in each tree of objects, where object trees are separated by an empty line you should try this:

awk 'BEGIN { nl=1 } /^$/ { nl=1 }  /OBJECT-TYPE/ && nl { obj= $1; nl=0; } /KEY { .* }/ { print obj, $3 }' file.txt

output:

ABC1 XYZ1
ABC2 XYZ3