{"id":7,"date":"2012-05-24T16:57:01","date_gmt":"2012-05-24T16:57:01","guid":{"rendered":"http:\/\/blog.law.gmu.edu\/webservices\/?p=7"},"modified":"2012-05-24T16:57:01","modified_gmt":"2012-05-24T16:57:01","slug":"red-hat-training","status":"publish","type":"post","link":"https:\/\/sls.gmu.edu\/web\/2012\/05\/24\/red-hat-training\/","title":{"rendered":"Red Hat Training"},"content":{"rendered":"

Notes from Red Hat System Administration I (RH124)<\/a> from April 2-6, 2012<\/p>\n

Day 1<\/h2>\n

Covered:<\/strong>
\nInstalling Red Hat 6, which took almost half a day.
\nUsing GNOME graphical desktop.
\nEditing files with gedit.
\nManaging files with Nautilus.
\nGetting help with manuals (F1 for help)
\nManaging system clock.
\nConfiguring printers.<\/p>\n

Command Lines:<\/strong>
\nuname -r (find out what version of Red Hat)
\n$ su – (log in as substitute user)
\n# useradd visitor (add username “visitor”)
\n# passwd visitor (add password to “visitor”)
\n# ip addr show eth0 (show ip address)
\n# ls \/usr\/share\/doc (documentations)
\n# man man (access manual)
\n# man -k print (-k is for keyword)<\/p>\n

Day 2<\/h2>\n

Introduced to Bash <\/strong><\/p>\n

Commands entered at the shell prompt have three basic parts:
\n# chmod +x gedit demo.txt
\n[command] [options] [arguments]<\/p>\n

Command lines:<\/strong>
\n# pwd (path you’re currently in)
\n# history
\nUsing the tab key (“tab” “tab”) for completion
\n# scp filename user@ip-address:\/ (copy file from local folder to virtual server)<\/p>\n

Introduced to managing physical storage using the graphical interface
\nLearned to manage logical volumes
\nIntroduced to monitoring system resources<\/p>\n

Day 3<\/h2>\n

Yum<\/strong>
\n# yum list (get the list of .rpm, which stands for RPM Package Manager)
\n# yum search kernel (kernel is the name of the package)
\n# yum install kernel
\n# yum update kernel
\n# yum remove kernel<\/p>\n

Network<\/strong>
\n# ip addr show eth0 (eth0 is the name of the network)
\n# more \/etc\/sysconfig\/network-scripts\/ifcfg-eth0
\n# service network restart
\n# system-config-network
\n# ip route
\n# host visualgui.com
\n# dig visualgui.com<\/p>\n

Users and Groups<\/strong>
\n# useradd donny
\n# passwd donny
\n# vipw (let’s one user edit at the same time)<\/p>\n

Manage Files<\/strong>
\n# echo $PATH
\n# pwd (current path)
\n# ls \/home\/{dir1,dir2} (show more two directories)
\n# ln file1 file2 (link file 1 to file 2)
\n# ln -s file1 file2 (symbolic link)
\n# su – username (change user)
\n# cp -av \/dir\/to\/copy \/dir\/destination<\/p>\n

Permission<\/strong>
\nr (view content)
\nw (change the content)
\nx (requires r to execute the content)<\/p>\n

rw-rw-rw-
\nrw-r–r–
\numask 002<\/p>\n

u+s (suid=4: file executes as the user that owns the file, not the user that ran the file
\ng+s (sgid=2: file executes as the group that owns the file
\no+t (sticky=1: no effect)<\/p>\n

Day 4<\/h2>\n

Administer remote system including remote shell access, remote file transfer, using SSH keys<\/p>\n

Managing physical storage including filesystem, partition and swap space<\/p>\n

Install Linux with Anaconda.<\/p>\n

SSH<\/strong>
\n# scp original-file new-file
\n# rsync -a \/home\/student demo:\/tmp
\n-a=all<\/p>\n

Archive<\/strong>
\n# tar -cvf target\/to\/archive source\/to\/archive
\n-c=create
\n-x=extract
\n-t=test (tell)
\n-v=verbose
\n-f=filename<\/p>\n

Using SSH<\/strong>
\n# ssh-keygen
\n# ssh-copy-id example.com<\/p>\n

# service crond status
\n# chkconfig –list crond<\/p>\n

# vi \/etc\/ssh\/sshd_config
\nPermissionRootLogin no
\nPassordAuthentication no
\n# service sshd restart<\/p>\n

Day 5<\/h2>\n

FTP<\/strong>
\n# service vsftpd status
\n# service vsftpd start
\n# chkconfig vsftpd on
\n# chkconfig vsftpd –list<\/p>\n

httpd<\/strong>
\n# ll \/var\/www\/
\n# ln -s \/var\/ftp\/pub \/var\/www\/html\/pub
\n# cat > \/var\/ftp\/pub\/index.html
\nHello World!<\/p>\n","protected":false},"excerpt":{"rendered":"

Notes from Red Hat System Administration I (RH124) from April 2-6, 2012 Day 1 Covered: Installing Red Hat 6, which took almost half a day. Using GNOME graphical desktop. Editing files with gedit. Managing files with Nautilus. Getting help with manuals (F1 for help) Managing system clock. Configuring printers. Command Lines: uname -r (find out … Continue reading “Red Hat Training”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[5],"tags":[20,26],"class_list":["post-7","post","type-post","status-publish","format-standard","hentry","category-command-lines","tag-linux","tag-red-hat"],"_links":{"self":[{"href":"https:\/\/sls.gmu.edu\/web\/wp-json\/wp\/v2\/posts\/7","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sls.gmu.edu\/web\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sls.gmu.edu\/web\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sls.gmu.edu\/web\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sls.gmu.edu\/web\/wp-json\/wp\/v2\/comments?post=7"}],"version-history":[{"count":0,"href":"https:\/\/sls.gmu.edu\/web\/wp-json\/wp\/v2\/posts\/7\/revisions"}],"wp:attachment":[{"href":"https:\/\/sls.gmu.edu\/web\/wp-json\/wp\/v2\/media?parent=7"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sls.gmu.edu\/web\/wp-json\/wp\/v2\/categories?post=7"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sls.gmu.edu\/web\/wp-json\/wp\/v2\/tags?post=7"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}