cosmic/bin/roster

#!/bin/sh

finish () {
  if [ -f "$temp_roster" ]; then
    rm "$temp_roster"
  fi
}
trap finish EXIT

# use temp file for accumulator
temp_roster=$(mktemp -t "$(basename "$0").roster.XXXXXXX") || exit 1

# find all ship folders
find "/var/gopher/" -maxdepth 1 ! -path "/var/gopher/" ! -path "/var/gopher/ships" ! -path "/var/gopher/log" -type d | while read -r shipdir
do
  owner=$(stat -c %U "$shipdir")
  printf "%s%%%%%s\\n" "$owner" "$(basename "$shipdir")" >> "$temp_roster"
done

if [ "$#" -ne 1 ]; then
  sort "$temp_roster" | column -s "%%" -t
elif [ "$1" = "count" ]; then
  sort "$temp_roster" | awk -F "%%" '{print $1}' | uniq -c
else
  sort "$temp_roster" | column -s "%%" -t | grep -i "$*"
fi