$sort -t: -k3 --debug /etc/passwd
sort: using ‘en_US.UTF-8’ sorting rules
root:x:0:0:root:/root:/bin/bash
________________________
_______________________________
jeffrin:x:1000:1000:Jeffrin Jose T,,,:/home/jeffrin:/bin/bash
___________________________________________________
_____________________________________________________________
uuidd:x:100:101::/run/uuidd:/bin/false
______________________________
______________________________________
uucp:x:10:10:uucp:/var/spool/uucp:/usr/sbin/nologin
____________________________________________
___________________________________________________
Debian-exim:x:101:103::/var/spool/exim4:/bin/false
____________________________________
__________________________________________________
statd:x:102:65534::/var/lib/nfs:/bin/false
__________________________________
__________________________________________
sshd:x:103:65534::/var/run/sshd:/usr/sbin/nologin
__________________________________________
_________________________________________________
messagebus:x:104:106::/var/run/dbus:/bin/false
_________________________________
______________________________________________
colord:x:105:109:colord colour management daemon,,,:/var/lib/colord:/bin/false
_____________________________________________________________________
______________________________________________________________________________
usbmux:x:106:46:usbmux daemon,,,:/home/usbmux:/bin/false
_______________________________________________
________________________________________________________
avahi:x:107:113:Avahi mDNS daemon,,,:/var/run/avahi-daemon:/bin/false
_____________________________________________________________
_____________________________________________________________________
pulse:x:108:114:PulseAudio daemon,,,:/var/run/pulse:/bin/false
______________________________________________________
______________________________________________________________
speech-dispatcher:x:109:29:Speech Dispatcher,,,:/var/run/speech-dispatcher:/bin/sh
______________________________________________________________
__________________________________________________________________________________
rtkit:x:110:116:RealtimeKit,,,:/proc:/bin/false
_______________________________________
_______________________________________________
Debian-gdm:x:111:117:Gnome Display Manager:/var/lib/gdm3:/bin/false
______________________________________________________
___________________________________________________________________
saned:x:112:118::/var/lib/saned:/bin/false
__________________________________
__________________________________________
ntp:x:113:120::/home/ntp:/bin/false
_____________________________
___________________________________
geoclue:x:114:121::/var/lib/geoclue:/bin/false
____________________________________
______________________________________________
dnsmasq:x:115:65534:dnsmasq,,,:/var/lib/misc:/bin/false
_____________________________________________
_______________________________________________________
fetchmail:x:116:65534::/var/lib/fetchmail:/bin/false
________________________________________
____________________________________________________
vde2-net:x:117:123::/var/run/vde2:/bin/false
_________________________________
____________________________________________
timidity:x:118:125:TiMidity++ MIDI sequencer service:/etc/timidity:/bin/false
__________________________________________________________________
_____________________________________________________________________________
epmd:x:119:128::/var/run/epmd:/bin/false
_________________________________
________________________________________
daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin
______________________________________
_______________________________________________
systemd-timesync:x:120:129:systemd Time Synchronization,,,:/run/systemd:/bin/false
_______________________________________________________________
__________________________________________________________________________________
systemd-network:x:121:130:systemd Network Management,,,:/run/systemd/netif:/bin/false
___________________________________________________________________
_____________________________________________________________________________________
systemd-resolve:x:122:131:systemd Resolver,,,:/run/systemd/resolve:/bin/false
___________________________________________________________
_____________________________________________________________________________
systemd-bus-proxy:x:123:132:systemd Bus Proxy,,,:/run/systemd:/bin/false
____________________________________________________
________________________________________________________________________
proftpd:x:124:65534::/run/proftpd:/bin/false
__________________________________
____________________________________________
ftp:x:125:65534::/srv/ftp:/bin/false
______________________________
____________________________________
_apt:x:126:65534::/nonexistent:/bin/false
__________________________________
_________________________________________
proxy:x:13:13:proxy:/bin:/usr/sbin/nologin
__________________________________
__________________________________________
bin:x:2:2:bin:/bin:/usr/sbin/nologin
______________________________
____________________________________
www-data:x:33:33:www-data:/var/www:/usr/sbin/nologin
_________________________________________
____________________________________________________
sys:x:3:3:sys:/dev:/usr/sbin/nologin
______________________________
____________________________________
backup:x:34:34:backup:/var/backups:/usr/sbin/nologin
___________________________________________
____________________________________________________
list:x:38:38:Mailing List Manager:/var/list:/usr/sbin/nologin
______________________________________________________
_____________________________________________________________
irc:x:39:39:ircd:/var/run/ircd:/usr/sbin/nologin
__________________________________________
________________________________________________
gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/usr/sbin/nologin
_________________________________________________________________________
_________________________________________________________________________________
sync:x:4:65534:sync:/bin:/bin/sync
___________________________
__________________________________
games:x:5:60:games:/usr/games:/usr/sbin/nologin
_______________________________________
_______________________________________________
man:x:6:12:man:/var/cache/man:/usr/sbin/nologin
_________________________________________
_______________________________________________
nobody:x:65534:65534:nobody:/nonexistent:/usr/sbin/nologin
_________________________________________________
__________________________________________________________
lp:x:7:7:lp:/var/spool/lpd:/usr/sbin/nologin
_______________________________________
____________________________________________
mail:x:8:8:mail:/var/mail:/usr/sbin/nologin
____________________________________
___________________________________________
news:x:9:9:news:/var/spool/news:/usr/sbin/nologin
__________________________________________
_________________________________________________
$sort -t: -k3 --debug /etc/passwd
$sort -t: -k3 --debug /etc/passwd
sort: using ‘en_US.UTF-8’ sorting rules
root:x:0:0:root:/root:/bin/bash
________________________
_______________________________
jeffrin:x:1000:1000:Jeffrin Jose T,,,:/home/jeffrin:/bin/bash
___________________________________________________
_____________________________________________________________
uuidd:x:100:101::/run/uuidd:/bin/false
______________________________
______________________________________
uucp:x:10:10:uucp:/var/spool/uucp:/usr/sbin/nologin
____________________________________________
___________________________________________________
Debian-exim:x:101:103::/var/spool/exim4:/bin/false
____________________________________
__________________________________________________
statd:x:102:65534::/var/lib/nfs:/bin/false
__________________________________
__________________________________________
sshd:x:103:65534::/var/run/sshd:/usr/sbin/nologin
__________________________________________
_________________________________________________
messagebus:x:104:106::/var/run/dbus:/bin/false
_________________________________
______________________________________________
colord:x:105:109:colord colour management daemon,,,:/var/lib/colord:/bin/false
_____________________________________________________________________
______________________________________________________________________________
usbmux:x:106:46:usbmux daemon,,,:/home/usbmux:/bin/false
_______________________________________________
________________________________________________________
avahi:x:107:113:Avahi mDNS daemon,,,:/var/run/avahi-daemon:/bin/false
_____________________________________________________________
_____________________________________________________________________
pulse:x:108:114:PulseAudio daemon,,,:/var/run/pulse:/bin/false
______________________________________________________
______________________________________________________________
speech-dispatcher:x:109:29:Speech Dispatcher,,,:/var/run/speech-dispatcher:/bin/sh
______________________________________________________________
__________________________________________________________________________________
rtkit:x:110:116:RealtimeKit,,,:/proc:/bin/false
_______________________________________
_______________________________________________
Debian-gdm:x:111:117:Gnome Display Manager:/var/lib/gdm3:/bin/false
______________________________________________________
___________________________________________________________________
saned:x:112:118::/var/lib/saned:/bin/false
__________________________________
__________________________________________
ntp:x:113:120::/home/ntp:/bin/false
_____________________________
___________________________________
geoclue:x:114:121::/var/lib/geoclue:/bin/false
____________________________________
______________________________________________
dnsmasq:x:115:65534:dnsmasq,,,:/var/lib/misc:/bin/false
_____________________________________________
_______________________________________________________
fetchmail:x:116:65534::/var/lib/fetchmail:/bin/false
________________________________________
____________________________________________________
vde2-net:x:117:123::/var/run/vde2:/bin/false
_________________________________
____________________________________________
timidity:x:118:125:TiMidity++ MIDI sequencer service:/etc/timidity:/bin/false
__________________________________________________________________
_____________________________________________________________________________
epmd:x:119:128::/var/run/epmd:/bin/false
_________________________________
________________________________________
daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin
______________________________________
_______________________________________________
systemd-timesync:x:120:129:systemd Time Synchronization,,,:/run/systemd:/bin/false
_______________________________________________________________
__________________________________________________________________________________
systemd-network:x:121:130:systemd Network Management,,,:/run/systemd/netif:/bin/false
___________________________________________________________________
_____________________________________________________________________________________
systemd-resolve:x:122:131:systemd Resolver,,,:/run/systemd/resolve:/bin/false
___________________________________________________________
_____________________________________________________________________________
systemd-bus-proxy:x:123:132:systemd Bus Proxy,,,:/run/systemd:/bin/false
____________________________________________________
________________________________________________________________________
proftpd:x:124:65534::/run/proftpd:/bin/false
__________________________________
____________________________________________
ftp:x:125:65534::/srv/ftp:/bin/false
______________________________
____________________________________
_apt:x:126:65534::/nonexistent:/bin/false
__________________________________
_________________________________________
proxy:x:13:13:proxy:/bin:/usr/sbin/nologin
__________________________________
__________________________________________
bin:x:2:2:bin:/bin:/usr/sbin/nologin
______________________________
____________________________________
www-data:x:33:33:www-data:/var/www:/usr/sbin/nologin
_________________________________________
____________________________________________________
sys:x:3:3:sys:/dev:/usr/sbin/nologin
______________________________
____________________________________
backup:x:34:34:backup:/var/backups:/usr/sbin/nologin
___________________________________________
____________________________________________________
list:x:38:38:Mailing List Manager:/var/list:/usr/sbin/nologin
______________________________________________________
_____________________________________________________________
irc:x:39:39:ircd:/var/run/ircd:/usr/sbin/nologin
__________________________________________
________________________________________________
gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/usr/sbin/nologin
_________________________________________________________________________
_________________________________________________________________________________
sync:x:4:65534:sync:/bin:/bin/sync
___________________________
__________________________________
games:x:5:60:games:/usr/games:/usr/sbin/nologin
_______________________________________
_______________________________________________
man:x:6:12:man:/var/cache/man:/usr/sbin/nologin
_________________________________________
_______________________________________________
nobody:x:65534:65534:nobody:/nonexistent:/usr/sbin/nologin
_________________________________________________
__________________________________________________________
lp:x:7:7:lp:/var/spool/lpd:/usr/sbin/nologin
_______________________________________
____________________________________________
mail:x:8:8:mail:/var/mail:/usr/sbin/nologin
____________________________________
___________________________________________
news:x:9:9:news:/var/spool/news:/usr/sbin/nologin
__________________________________________
_________________________________________________
$