Persistent Systems Technical Support Lead Interview Questions and Answers

In Linux shell scripting, use the -e flag to check if a file exists.

• Use the command: if [ -e $filename ]; then echo 'File exists'; fi

• The -e flag checks for the existence of a file or directory.

• You can also use -f for regular files: if [ -f $filename ]; then echo 'Regular file exists'; fi

• For directories, use -d: if [ -d $dirname ]; then echo 'Directory exists'; fi

This task involves removing a specified number of characters from a string based on asterisks indicating the count.

• Identify the number of asterisks in the string to determine how many characters to remove.

• Use string slicing to remove the specified characters from the original string.

• Example: For 'Persis****', remove 4 characters to get 'Pe'.

• Consider edge cases, such as when the number of asterisks exceeds the length of...read more

DevOps tools streamline development and operations, enhancing collaboration, automation, and continuous delivery in software projects.

• Continuous Integration/Continuous Deployment (CI/CD): Tools like Jenkins automate the process of integrating code changes and deploying applications, ensuring faster delivery.

• Infrastructure as Code (IaC): Tools such as Terraform and Ansible allow teams to manage infrastructure through co...read more

Quality Assurance process involves ensuring products meet standards and customer expectations.

• Developing quality standards and procedures

• Testing products to identify defects

• Implementing corrective actions

• Continuous monitoring and improvement

• Training staff on quality processes