Printing the invert of the last field of awk

Shell Programming and Scripting
1

in csh

set x = "/home/usr/dir1/file1"

if i do:

echo $x | awk -F\/ '{print $NF}'

will result to:
"file1"

how do i invert the output to:
"/home/usr/dir1"

:confused:

2

Why use awk?

dirname $x

anyway to use awk:

echo $x|awk -F\/ '{for (i=1;i<=NF-2;i++)printf("%s/",$i);printf("%s\n",$i)}'
3

In csh:

% set x = "/home/usr/dir1/file1"
% echo $x:h
/home/usr/dir1