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♥ 14 Unix interview questions & answers 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” within a number of .properties files

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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

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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&A 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? A3 Q4 Can you write…...

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Unix history commands for Java developer productivity

When you are using Linux/Unix command line frequently, using the history effectively can be a major productivity boost. You can accomplish things with less typing. For example, you will be typing lots of commands like and so on. There are 6 ways to repeat your previous commands quickly without having

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Unix remoting interview Q&A for Java developers

Q1 How will you delete files that are older than 7 days in a remote unix server? A1 By ssh ing to the remote host server Q2 How will you copy files from a remote server to a local server? A2 By scp ing (i.e. secured copying) to the remote…...

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Unix sed & awk commands in action

This extends sed and awk to write shell scripts for Java developers. Q2 Can you explain the following Unix command? A2 The “date” prints the date and time. The “ps -ef” outputs all the running processes with the UID (user ids) as shown below: The “awk ‘{ print $1}’ ”

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Unix Sed commands for Java developers

sed (stream editor) is one of the powerful workhorse commands in UNIX. Recently I had to use it with “Git” and “Maven” to find text “SNAPSHOT” in all pom.xml files, and manually update them with a realease version like 1.0.2 without the suffix “SNAPSHOT”. Here is the command that I

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Posted in Tools, Unix Interview Q&As, Unix Tutorial

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