Set cronjob for user natasha (student) to do /bin/echo hiya at 14:23 - # crontab -e -u natasha 23 14 * * *
/bin/echo hiya
SELinux must be running in the Enforcing mode - # cat /etc/selinux/config
# setenforce 1
# vim /etc/selinux/config
## selinux=enforcing
sestatus
1. A YUM repository has been provided at http://server.domain11.example.com/pub/x86_64/Server.
Configure your system to use this location as a default repository. - 'cd /etc/yum.repo.d/'
'touch exam.repo'
'vim exam.repo'
###
[exam]
name=exam
baseurl=http://...
enable=1
nogpgcheck=0
###
'yum repo list' // (This verifies that it is enabled)
Create the following users, groups, and group memberships:
· A group named adminuser
· A user natasha who belongs to admin user as a secondary group
· A user harry who also belongs to admin user as a secondary group
, · A user sarah who does not have access to an interactive shell on the system, and who is not a member
of adminuser, natasha, harry, and sarah should all have the password of redhat. - 'addgroup adminuser'
'useradd natasha'
'usermod -a -G adminuser natasha'
'useradd harry'
'usermod -a -G adminuser harry'
'useradd -s /sbin/nologin sarah'
'passwd natasha'
'passwd harry'
'passwd sarah'
Configure the FTP service in your system, allow remote access to anonymous login and download the
program by this service. Service is still running after system rebooting. - 'yum install vsftpd'
'systemctl start vsftpd'
'systemctl enable vsftpd'
'rpm -qc vsftpd' // list all vsftpd files for .conf file
'vim file.conf'
#set anonymous_enable=YES
'systemctl restart vsftpd'
Configure your web services, download from http://instructor.example.com/pub/serverX.html , and the
services must be still running after system rebooting - 'cd /var/www/html'
'wget http://instructor.example.com/pub/serverX.html'
'mv server.html index.htlm'
'systemctl restart httpd'
'systemctl status httpd' //verify that the system is enabled
Download the document from ftp://instructor.example.com/pub/testfile, find all lines containing
[abcde] and redirect the /MNT/answer document, then rearrange the order according to the original
content - 'wget ftp://instructor.example.com/pub/testfile'
'mkdir -p /MNT/answer'