rhcsa 14-19

rhcsa 14-19 

 14.write script awesome.sh in the root directory on system1

a) if "me" is given as an argument, then th script shoutl "Yes, I'm awesome"

b) if "them is given as an argument " then he script soult output "okay, they are awesome"

c) If the argument is empty or anything else is given, the script should output "Usage./awesome.sh me|them"

solution: 

#!/bin/bash

if [ "$1" == "me" ] ; then

        echo "Yes, I'm awesome."

elif [ "$1" == "them" ] ; then

        echo "Okay, they are awesome."

else

        echo  "Usage ./awesome.sh me|them"

fi

 

15. Create users phil, laura, stewart and kevin

a) all new user should have a file named "welcome" in thein home folder after account creation 

b) all user password expire after 60 days and be at least 8 characters in length

c) phil and laura should be part of the "accounting" group. If the froup doesn't already exist, create it. 

d) stewart and kevin should be part of the "marketing" group. If the group doesn't already exist, create it. 

solution: 

a)[root@localhost ~]# touch /etc/skel/Welcome

b) vi /etc/login.defs 

- change PASS_MAX_DAYS

- change PASS_MIN_LEN

c) +d 

[root@localhost ~]# useradd phil

[root@localhost ~]# useradd laura

[root@localhost ~]# useradd stewart

[root@localhost ~]# useradd kevin

 chage -l phil

 chage -l laura

 chage -l stewart

 chage -l kevin

groupadd accounting 

gpasswd -a phil accounting 

gpasswd -a laura accounting 

groupadd marketing

gpasswd -a stewart marketing

gpasswd -a kevin marketing

16. only members of the accounting group should have access to the "/accounting" directory. Make laura the owner of this dicrectory. Make the accounting group the group owner of the "/accounting  directory.

mkdir /accounting

 chown laura:accounting /accounting

17. only members of the marketing group should have access to the "/marketing" directory. Make stewart the owner of this dicrectory. Make the marketing group the group owner of the "/marketing  directory.

mkdir /marketing 

chown stewart:marketing /marketing

18. New files should be owned by the group owner and only the file creater shoul have permission to delete their own files. 

[root@localhost ~]# chmod 770 /accounting

[root@localhost ~]# chmod 770 /marketing/

[root@localhost ~]# chmod g+s /accounting/

[root@localhost ~]# chmod +t /accounting/

[root@localhost ~]# chmod g+s /marketing/

[root@localhost ~]# chmod +t /marketing/

19. Create a cron job that writes "this practice exam was easy and I'm ready to ace my RHCSA" to /var/log/messages at 12 pm only on weekdays

0 12 * * 1-5  echo "this practice exam was easy and I'm ready to ace my RHCSA" >> /var/log/messages