+ # Prefer w to who, see bug #39
+ if [ -x "`which w`" ]; then
+ user="`w -h | awk -vD="$D" '$2 ~ ":"D"(.[0-9])?$" || $3 ~ ":"D"(.[0-9])?$" {print $1}' | head -n1`"
+
+ if [ -z "$user" ]; then
+ # This fallback checks if there is exactly one user (except
+ # root) logged in an interactive session and assumes the
+ # session belongs to him. See bug #39.
+ user="`w -hu | awk '/^\w+/ && $1 !~ "root" { users[$1]=$1; } ENDFILE { if(asort(users) == 1) for(u in users) print users[u]; }'`"
+ fi
+ else
+ user="`who --all | awk -vD="$D" '$3 ~ ":"D"(.[0-9])?$" {print $1}' | head -1`"
+
+ if [ -z "$user" ]; then
+ # Same fallback as above; see bug #39.
+ user="`who -u | awk '/^\w+/ && $1 !~ "root" { users[$1]=$1; } ENDFILE { if(asort(users) == 1) for(u in users) print users[u]; }'`"
+ fi
+ fi
+