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12 SSH interview Q&As

Q1. What is ssh?
A1. SSH is a secure protocol used for remotely connecting to Linux servers. For example, creating an ssh connection from your local laptop to an ec2 instance running on AWS or any server on the cloud.

You will be prompted for a password,

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14 Unix interview Q&As for Java developers

Q1 How do you remove the Control-M characters from a file?
A1 Using the sed command that replaces Control-M with nothing

Note: The ^M is typed on the command line with ctrl+v and ctrl+M

Q2 How will you search for a property named “inbox”

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5 curl vs wget interview Q&As

Q1. What are the differences between curl & wget? A1. wget is a tool to download files from servers. It let’s you download files from an HTTP/HTTPS or FTP server. You give it a link and it automatically downloads the file where the link points to. … Read more ›...

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Hidden Unix, Git & SVN config files

You need to use “ls -la” to list the hidden files in your home (i.e ~) directory. These config files are “.bashrc”, “.inputrc”, “.profile”, etc. In computing, a hidden folder or hidden file is a folder or file that does not display by default when showing a directory/file listing. In Unix-like operating systems,

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sed and awk to write shell scripts for Java developers

Q. How would you go about replacing a piece of a text or a phrase from 20,000+ web templates residing on a Unix file system? Even some candidates with 5+ years of experience will be tempted to spend a day or two to write 200+ lines of code to achieve...

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Shell script interview Q&As for Java developers

Q1 How will you go about reading a CSV file as shown below? A1 Q2 How will you read and then write to another file? A2 Q3 How will you read the file and then write to another file with CSV data in different order? … Read more ›...

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Top 10 Linux interview Q&As

Many production systems run on Linux systems, especially the Cloud infrastructure (i.e. AWS & GCP). Even Android uses the Linux kernel under the hood. So, it really pays to have a good knowledge of Linux. Q1. How do you check for open ports in Linux? A1. … Read more ›...

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