Homework & Coursework Questions

finger | tail -n +2 | sort -n +4 -5

finger | tail -n +2 | sort -M | sort +6 -7

finger |\
awk ' NR==1 {
  ind=index($0,"Login Time");
 } NR>1 {
  ldt=substr($0,ind,12);
  cmd="date -d \""ldt"\" +%s";
  while ((cmd | getline epoch ) > 0 ) {
   epoch=epoch;
  }
  close(cmd);
  printf "%s %s\n", epoch, $0;
} ' | sort -n | cut -c 12-

#!/bin/bash

rm -f tmp

finger | while read line
do
        if [ $( echo $line | grep -c "^Login" ) -eq 0 ]
        then
                echo "$( date -d"${line:39:12}" +"%s" ) $line" >> tmp
        fi
done

sort -n tmp | cut -c 12-

w | tail -n +3 | sort -k4n

finger | tail -n +2 | sort -n +4 -5