ubuntu中查看所有的用户信息

What is the command to list users in ubuntu?.  In this tutorial i’ll share  How to List all users in ubuntu via command line. you can easily list users in ubuntu using the cat command as follows:

 

$ cat /etc/passwd

OR you can view per page ,use following commands

less /etc/passwd

more /etc/passwd

Output :

root:x:0:0:root:/root:/bin/bash

daemon:x:1:1:daemon:/usr/sbin:/bin/sh

bin:x:2:2:bin:/bin:/bin/sh

sys:x:3:3:sys:/dev:/bin/sh

sync:x:4:65534:sync:/bin:/bin/sync

games:x:5:60:games:/usr/games:/bin/sh

man:x:6:12:man:/var/cache/man:/bin/sh

lp:x:7:7:lp:/var/spool/lpd:/bin/sh

mail:x:8:8:mail:/var/mail:/bin/sh

news:x:9:9:news:/var/spool/news:/bin/sh

uucp:x:10:10:uucp:/var/spool/uucp:/bin/sh

proxy:x:13:13:proxy:/bin:/bin/sh

...........

.........

 

All fields are separated by a colon (:) symbol. Total seven fields exists. The first field is username. It is used when user logs in. It should be between 1 and 32 characters in length

you can also  list only usernames with command awk , type these command in terminal :

awk -F':' '{ print $1}' /etc/passwd

Here’s example outputs of command above:

root

daemon

bin

sys

sync

games

man

lp

mail

news

uucp

proxy

www-data

backup

list

irc

gnats

nobody

.....

.....