rh

rh

1. Chapter 2: Using Essential Tools

   • Basic Shell Skills
     • Ejecuting Commands
       • Aliases
       • Internas Commands
       • Externas Commands
     • I/O Redirection
       • STDIN "0<" <
       • STDOUT "1>" >
       • STDERR 2>
     • History
   • Editing Files with vim
     • gg G :%s/x/X/g
   • Understanding the Shell Environment
     • bashrc
     • bash_profile
     • /etc/issue
     • /etc/motd
   • Finding help
     • man -k appropos mandb pinfo
     • Man 1 5 8
     • pinfo

2. Chapter 3: Essential File Management Tools

   • Working with the File System Hierarchy
     • / Root directory
     • /bin Essential applications
     • /boot Contains files to boot
     • /dev Device files for accessing to phisical devices
     • /etc Contains configuration files
     • /home Used for local users
     • /lib,/lib64 Shared libraris used for /boot,/bin and /sbin
     • /media,/mnt Directories for mount
     • /opt For optional packages
     • /proc For kernel information
     • /root Home for root user
     • /run Information for process and users since last boot
     • /sbin Like /bin for administrators
     • /srv Directory from service ftp nfs http
     • /sys Used as an interface for Linux Kernel and associated processes
     • /tmp Temporary files
     • /usr are not required during boot
     • /var Files change dynamically,log ,mail box and spool
     • Understanding Mounts
       • mount
       • findmnt
   • Managing Files
     • * ? []
     • Listing
     • Coping
     • Moving
     • Deleting
   • Using Links
     • ln hard link
     • ln -s soft link
   • Working with Archives and Compressed Files
     • tar cvr
     • tar xvf
     • tar tvf
     • tar uvf
     • tar xvf fichero -C fichero
     • tar xjvf tar cjvf
     • tar xzvf tar czvf
     • star

3. Chapter 4: Working with Text Files

   • Using Common Text File-Related Tools
     • less
     • cat
     • head
     • tail
     • cut
     • sort
     • wc
   • A Primer to Using Regular Expressions
     • ^text Line starts with text
     • text$ Line ends with text
     • . Wildcard
     • [abc] Matches a,b, or c
     • * Match 0 to an infinite
     • \{2\} Match exactly 2 of the previous character
     • \{1,3\} Match a minimum of 1 and a maximum of 3 of the previous character
     • colou?r Match 0 or 1 of the previous character.
   • Using grep to Analize Text
     • -i
     • -v
     • -r
     • -e Use this to search for lines matching more than one regular expression.
     • -A
     • -B
   • Working with Other Useful Text Processing Utilities
     • awk
     • sed

4. Chapter 5: Connecting to Redhat Enterprise Linux 7

   • Working on local consoles
     • Alt+f1---
     • chvt 1-6
     • Understanding Pseudo Terminal Devices
     • rboot halt poweroff
   • Using SSH and Related Utilities
     • ssh-keygen
     • ssh-copy-id
     • sreen

5. Chapter 6: Users and Groups Management

   • Diferent User Types
     • su
     • sudo
     • PolicyKit
   • Manging User Account
     • System and Normal Accounts
   • Creating and Managing Group Accounts
     • Creating Groups
       • vigr
       • groupadd
       • usermod -aG
   • Loggin in Through an External Authentication Service
     • authconfig-tui
     • nslcd
     • sssd
     • yum groupinstall -y "Directory Client"
       • scp ipa:/root/ceacrt.p12 /etc/openldap/cacerts

6. Chapter 7: Configuring Permissions