[mveliz@localhost ~]$ su
Password:
[root@localhost mveliz]# useradd skywalker
[root@localhost mveliz]# ls /home/
lost+found  mveliz  skywalker
[root@localhost mveliz]# cat /etc/passwd
root:x:0:0:root:/root:/bin/bash
bin:x:1:1:bin:/bin:/sbin/nologin
daemon:x:2:2:daemon:/sbin:/sbin/nologin
adm:x:3:4:adm:/var/adm:/sbin/nologin
lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin
sync:x:5:0:sync:/sbin:/bin/sync
shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown
halt:x:7:0:halt:/sbin:/sbin/halt
mail:x:8:12:mail:/var/spool/mail:/sbin/nologin
operator:x:11:0:operator:/root:/sbin/nologin
games:x:12:100:games:/usr/games:/sbin/nologin
ftp:x:14:50:FTP User:/var/ftp:/sbin/nologin
nobody:x:99:99:Nobody:/:/sbin/nologin
apache:x:48:48:Apache:/usr/share/httpd:/sbin/nologin
systemd-timesync:x:999:998:systemd Time Synchronization:/:/sbin/nologin
systemd-network:x:192:192:systemd Network Management:/:/sbin/nologin
systemd-resolve:x:193:193:systemd Resolver:/:/sbin/nologin
dbus:x:81:81:System message bus:/:/sbin/nologin
polkitd:x:998:997:User for polkitd:/:/sbin/nologin
geoclue:x:997:996:User for geoclue:/var/lib/geoclue:/sbin/nologin
rtkit:x:172:172:RealtimeKit:/proc:/sbin/nologin
pulse:x:171:171:PulseAudio System Daemon:/var/run/pulse:/sbin/nologin
avahi:x:70:70:Avahi mDNS/DNS-SD Stack:/var/run/avahi-daemon:/sbin/nologin
chrony:x:996:992::/var/lib/chrony:/sbin/nologin
rpc:x:32:32:Rpcbind Daemon:/var/lib/rpcbind:/sbin/nologin
usbmuxd:x:113:113:usbmuxd user:/:/sbin/nologin
radvd:x:75:75:radvd user:/:/sbin/nologin
qemu:x:107:107:qemu user:/:/sbin/nologin
colord:x:995:990:User for colord:/var/lib/colord:/sbin/nologin
abrt:x:173:173::/etc/abrt:/sbin/nologin
saslauth:x:994:76:Saslauthd user:/run/saslauthd:/sbin/nologin
openvpn:x:993:988:OpenVPN:/etc/openvpn:/sbin/nologin
nm-openvpn:x:992:987:Default user for running openvpn spawned by NetworkManager:/:/sbin/nologin
gdm:x:42:42::/var/lib/gdm:/sbin/nologin
setroubleshoot:x:991:985::/var/lib/setroubleshoot:/sbin/nologin
rpcuser:x:29:29:RPC Service User:/var/lib/nfs:/sbin/nologin
nfsnobody:x:65534:65534:Anonymous NFS User:/var/lib/nfs:/sbin/nologin
nm-openconnect:x:990:984:NetworkManager user for OpenConnect:/:/sbin/nologin
gnome-initial-setup:x:989:983::/run/gnome-initial-setup/:/sbin/nologin
sshd:x:74:74:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin
tss:x:59:59:Account used by the trousers package to sandbox the tcsd daemon:/dev/null:/sbin/nologin
tcpdump:x:72:72::/:/sbin/nologin
mveliz:x:1000:1000:Miguel Veliz:/home/mveliz:/bin/bash
skywalker:x:1001:1001::/home/skywalker:/bin/bash
[root@localhost mveliz]# mkdir /etc/skel/CIS
[root@localhost mveliz]# useradd rattlesnake
[root@localhost mveliz]# ls /home/rattlesnake/
CIS
[root@localhost mveliz]# useradd cottonmouth
[root@localhost mveliz]# groupadd Viper
[root@localhost mveliz]# usermod -a -G Viper cottonmouth
[root@localhost mveliz]# usermod -a -G Viper rattlesnake
[root@localhost mveliz]# mkdir /shared
[root@localhost mveliz]# mkdir /shared/viper
[root@localhost mveliz]# chgrp Viper /shared/viper
[root@localhost mveliz]# chmod -R g+rwx /shared/viper
[rattlesnake@localhost mveliz]$ touch /shared/viper/genetics
[rattlesnake@localhost mveliz]$ su
Password:
[root@localhost mveliz]# su cottonmouth
[cottonmouth@localhost mveliz]$ echo "acaagatgcc" >> /shared/viper/genetics
[cottonmouth@localhost mveliz]$ cat /shared/viper/genetics
acaagatgcc