#! /bin/bash    

# only use 10th lines

foreach file (`ls -1 ../P[4-8]*z*/P.wghr`)
echo $file
#cat $file | egrep "^.....0" > $file\.0s
cat $file | awk ' NR%100==0 {print $0}' > $file\.0s # cuts file down to just every hundred timesteps.
end