Counting open files by process
lsof | awk '{procct[$1]++;procname[$1]=$1;}END{for (i in procname) {printf ("%s, %d\n",procname[i],procct[i]);}}' | tr -s " " | sort -t" " -n -r -k 2,2
lsof | awk '{procct[$1]++;procname[$1]=$1;}END{for (i in procname) {printf ("%s, %d\n",procname[i],procct[i]);}}' | tr -s " " | sort -t" " -n -r -k 2,2