Question

I am working with the zone.tab under /usr/share/zoneinfo/zonetab and I am having trouble displaying the data in a certain format.

the command I run:

cat zone.tab | awk '!/#/ {print $3}' | sort

this returns a list of regions and contries:

America/Washington
Pacific/Enderbury

What I need is for the above to return everything after the last / on each line.

There are some cases such as Pacific/Somewhere/A. I have a regex ([^/]+$) that should work but it doesn’t. Any ideas?

Answer 1

You can also do it all in a single awk command:

awk '!/^#/ { sub(".*/", "", $3); print $3 }' /usr/share/zoneinfo/zone.tab
     ----    -----------------   --------
        |                   |          |
  for non-comment lines     |          |
                            |          |
                     modify 3rd col    |
                   leaving only text   |
                   after last slash    |
                                       |
                                 Then print modified 3rd col