Red Hat System Administration II
Write a simple Bash script with a sequence of commands and run it from the command line.
Outcomes
Write and execute a simple Bash script.
Redirect the output of a simple Bash script to a file.
As the student user on the workstation machine, use the lab command to prepare your system for this exercise.
This command prepares your environment and ensures that all required resources are available.
[student@workstation ~]$ lab start console-write
Instructions
Log in to the
serveramachine as thestudentuser.[student@workstation ~]$
ssh student@servera...output omitted... [student@servera ~]$Create and execute a simple Bash script.
Use the
vimcommand to create thefirstscript.shfile under your home directory.[student@servera ~]$
vim firstscript.shInsert the following text, and save the file. The number of hash signs (
#) is arbitrary.#!/usr/bin/bash echo "This is my first bash script" > ~/output.txt echo "" >> ~/output.txt echo "#####################################################" >> ~/output.txt
Use the
bashcommand to execute the script.[student@servera ~]$
bash firstscript.shReview the output file that the script generated.
[student@servera ~]$
cat output.txtThis is my first bash script #####################################################
Add more commands to the
firstscript.shscript, execute it, and review the output.Use the Vim text editor to edit the
firstscript.shscript.[student@servera ~]$
vim firstscript.shThe following output shows the expected content of the
firstscript.shfile:#!/usr/bin/bash # echo "This is my first bash script" > ~/output.txt echo "" >> ~/output.txt echo "#####################################################" >> ~/output.txt echo "LIST BLOCK DEVICES" >> ~/output.txt echo "" >> ~/output.txt lsblk >> ~/output.txt echo "" >> ~/output.txt echo "#####################################################" >> ~/output.txt echo "FILESYSTEM FREE SPACE STATUS" >> ~/output.txt echo "" >> ~/output.txt df -h >> ~/output.txt echo "#####################################################" >> ~/output.txt
Make the
firstscript.shfile executable by using thechmodcommand.[student@servera ~]$
chmod a+x firstscript.shExecute the
firstscript.shscript.[student@servera ~]$
./firstscript.shReview the output file that the script generated.
[student@servera ~]$
cat output.txtThis is my first bash script ##################################################### LIST BLOCK DEVICES NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS sr0 11:0 1 558K 0 rom vda 252:0 0 10G 0 disk ├─vda1 252:1 0 1M 0 part ├─vda2 252:2 0 200M 0 part /boot/efi ├─vda3 252:3 0 500M 0 part /boot └─vda4 252:4 0 9.3G 0 part / vdb 252:16 0 5G 0 disk vdc 252:32 0 5G 0 disk vdd 252:48 0 5G 0 disk ##################################################### FILESYSTEM FREE SPACE STATUS Filesystem Size Used Avail Use% Mounted on devtmpfs 844M 0 844M 0% /dev tmpfs 888M 0 888M 0% /dev/shm tmpfs 355M 9.4M 346M 3% /run /dev/vda4 9.4G 1.7G 7.7G 18% / /dev/vda3 495M 161M 335M 33% /boot /dev/vda2 200M 7.6M 193M 4% /boot/efi tmpfs 178M 0 178M 0% /run/user/1000 #####################################################
Remove the exercise files and return to the
workstationmachine.Delete the
firstscript.shandoutput.txtfiles.[student@servera ~]$
rm firstscript.sh output.txtReturn to the
workstationmachine as thestudentuser.[student@servera ~]$
exitlogout Connection to servera closed. [student@workstation ~]$
Is It possible to reset root password when the system is on multi-user.target?
jennifer1987
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Hi thereWell, i have a question, Is It possible to reset root password when the system is on multi-user.target? I was not be able to found a foro o some information related with this and another question that I have, If the grub menu dont show up, is it posible to reset the root password?
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Red Hat System Administration II (RH134)
Haley_Ruccio
21 lip 2023
Build the skills to perform the key tasks needed to become a full-time Linux administratorRed Hat System Administration II (RH134) is the second part of the RHCSA training track for IT professionals who have already attended Red Hat System Administration I. The course goes deeper into core Linux system administration skills in storage configuration and management, installation and deployment of Red Hat Enterprise Linux, management of security features such as SELinux, control of recurring system tasks, management of the boot process and troubleshooting, basic system tuning, and command-line automation and productivity. This course assumes that students have attended Red Hat System Administration I (RH124).Experienced Linux administrators who seek rapid preparation for the RHCSA certification should instead start with RHCSA Rapid Track (RH199).This course is based on Red Hat Enterprise Linux 9.0.Course summaryInstall Red Hat Enterprise Linux using scalable methodsAccess security files, file systems, and networksExecute shell scripting and automation techniquesManage storage devices, logical volumes, and file systemsManage security and system accessControl the boot process and system servicesRun containersAudience for this courseThis course is geared toward Windows system administrators, network administrators, and other system administrators who are interested in supplementing current skills or backstopping other team members, in addition to Linux system administrators who are responsible for these tasks:Configuring, installing, upgrading, and maintaining Linux systems using established standards and proceduresProviding operational supportManaging systems for monitoring system performance and availabilityWriting and deploying scripts for task automation and system administrationRecommended trainingSuccessful completion of Red Hat System Administration I (RH124) is recommended.Experienced Linux administrators seeking to accelerate their path toward becoming a Red Hat Certified System Administrator should start with the RHCSA Rapid Track course (RH199).Take our free assessment to gauge whether this offering is the best fit for your skills.Technology considerationsThere are no special technology requirements.This course is not designed for bring your own device (BYOD).Internet access is not required, but is recommended to allow students to research and access Red Hat online resources.
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Welcome to the Red Hat System Administration II (RH134) group in the Red Hat Learning Community!
Deanna
18 lip 2023
We are excited to launch a space dedicated to the Red Hat Training course Red Hat System Administration II! To gain the most value from this group - click the "Join Group" button in the upper right hand corner.We encourage group members to collaborate in this group to discuss topics, ask questions, share best practices and tips, provide course feedback, and share their accomplishments as it relates to RH134.Read more about Red Hat System Administration II here.
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