#!/bin/bash

INFILE="test.txt"

for u in $(cat "$INFILE"| cut -d ' ' -f 3 | sort | uniq)
do 
  echo $u
  grep $u "$INFILE" | awk '{print ($2," ",$1)}'
done

#!/bin/sh

INP="${1}"

for i in `sort -k 3 "${INP}" | awk '{print $3}' | uniq`; do
  echo "${i}"
  grep "[[:blank:]]\{1,\}${i}$" "${INP}" | awk '{print $2" "$1}'
  echo
done

awk '{lines[$3] = lines[$3] $2 " " $1 "\n";} END {for (name in lines) { print name; print lines[name]; }}'

for i in `cat FILENAME | awk '{print $3}' | sort -u`;do echo $i;cat FILENAME | awk "/$i/{print (\$2" "\$1)}";done

#!/usr/bin/env python

def f_out():
    with open("lor.txt") as f:
        data = f.readlines()
        return data

logins = [x.split()[2] for x in f_out()]
u_logins = set(logins)

for i in u_logins:
    print i
    for j in f_out():
        if i in j:
            print j.split()[1], j.split()[0]

awk '
BEGIN{memo="foo"} 
{ 
    if(memo != $3) {
        memo = $3; 
        print memo
    } 
    print $2, $1
}'

# -*- coding: utf-8 -*-
#!/usr/bin/env python

from collections import defaultdict
from sys import stdin

entries = defaultdict(list)

for line in stdin:
    date, ip, user = line.split()
    entries[user].append((ip, date))

for user in sorted(entries.keys()):
    print user
    for ip, date in entries[user]:
        print ip, date
    print

#!/usr/bin/tclsh
set prev ""
while { ! [ catch gets line ] } {
   set data [ lrange $line 0 end-1 ]
   set user [ lindex $line end ]
   if { $user != $prev } {
      puts ""
      puts $user
      set prev $user
   }
   puts $data
}

#!/usr/bin/env python3
records = [ line.split() for line in open("testfile", 'r', encoding='utf-8') ]
result = { x[2]: { ' '.join((y[1], y[0])) for y in records if y[2] == x[2]} for x in records }
for x in sorted(result.keys()):
    print("{0}\n{1}".format(x,"\n".join(sorted(result[x]))))

declare -A Logons
while read l; do
 a=($l)
 Logons[${a[2]}]+="${a[1]} ${a[0]}
"
done <logons.txt
for uid in ${!Logons[@]}; do
 echo -e "$uid\n${Logons[$uid]}"
done

#!/bin/bash
declare -A Logons
while read -a a; do
 Logons[${a[2]}]+="${a[1]} ${a[0]}
"
done <logons.txt
for uid in $(echo "${!Logons[@]}" | tr ' ' '\n' | sort); do
 echo -e "$uid\n${Logons[$uid]}"
done

sort -k 3 FILENAME | awk '$3 != last { print $3; last = $3 } { print $2, $1 }'

awk '$3 != last { print $3; last = $3 } { print $2, $1 }' FILENAME