Here is the list of Microland interview questions on shell scripts. These include Updating software and Doing security audits. These are helpful to automate the processes. We will delve into the details of the scripts.
Table of contents
Updating software
Managing updates on multiple servers can be a time-consuming task if done manually. We’ll explore how to automate the software update process on multiple servers using shell scripts. By creating a simple script and leveraging SSH key-based authentication, you can efficiently update software across various servers securely and seamlessly.
Let’s dive into the details and streamline your server maintenance workflow. To update software on 5 servers using shell scripts, you can create a script like the following:
#!/bin/bash
# List of servers
servers=("server1" "server2" "server3" "server4" "server5")
# Software update command
update_command="sudo apt update && sudo apt upgrade -y"
# Iterate through the servers and update software
for server in "${servers[@]}"
do
ssh user@$server "$update_command"
done
Replace “user” with the appropriate username for accessing the servers. After creating this script, make sure to set up SSH key-based authentication for seamless and secure access to the servers without being prompted for a password.
Security audit
Here is an example of a shell script for conducting a security audit on multiple servers:
#!/bin/bash
# List of servers
servers=("server1" "server2" "server3" "server4" "server5")
# Security audit commands
audit_command="sudo chkrootkit && sudo rkhunter --check"
# Iterate through the servers and conduct security audit
for server in "${servers[@]}"
do
ssh user@$server "$audit_command"
done
Here, the chkrootkit and rkhunter commands help perform a security audit on the specified servers. Replace “user” with the appropriate username for accessing the servers. Ensure you have set up SSH key-based authentication for seamless and secure access without being prompted for a password.
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Conclusion
At the end of this look at using shell scripts for managing servers and performing security checks, it’s evident that automation is crucial for simplifying these tasks. By using shell scripting and SSH key-based authentication, system administrators can easily manage software updates and conduct security checks on multiple servers. This not only saves time but also enhances the security and reliability of the server infrastructure. As technology progresses, expertise in shell scripting for automation continues to be important for anyone involved in server maintenance and security.
Srinimf 
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