JBM Group Interview Questions and Answers

Use grep command to check pattern in all files in current directory

• Use 'grep' command with the desired pattern and '*' wildcard to search for the pattern in all files in the current directory

• For example, to search for the pattern 'example' in all files in the current directory: grep 'example' *

Multistage pipeline in Jenkins allows for defining complex build pipelines with multiple stages and actions.

• Multistage pipeline is defined in a Jenkinsfile using declarative syntax

• Each stage in the pipeline represents a specific part of the build process

• Stages can have multiple steps like build, test, deploy, etc.

• Parallel stages can be defined to run multiple tasks concurrently

• Post actions can be defined to execute tas...read more

Shell script to display current process with only process id

• Use the 'ps' command to list all processes

• Pipe the output to 'awk' to print only the process id column

• Exclude the header line from the output

Use Jenkins Pipeline to clean workspace after each build

• Add a post-build step in Jenkins Pipeline to delete workspace contents

• Use 'deleteDir()' command in Jenkins Pipeline to remove workspace directory

• Consider using 'sh' or 'bat' commands to execute shell or batch scripts for cleaning workspace

To check memory and storage in Linux, you can use commands like free, df, and du.

• Use 'free' command to check memory usage and available memory

• Use 'df' command to check disk space usage

• Use 'du' command to check disk usage of specific directories

No, hitting a file on a robotic machine while operating it is not recommended.

• Hitting a file on a robotic machine can damage the machine and the file.

• It can also cause safety hazards for the operator and others nearby.

• It is important to follow proper operating procedures and safety guidelines when using robotic machines.

The bonnet has a ding dang that can be buffed out.

• Yes, there is a ding dang on the bonnet that can be buffed out.

• Buffing may help to remove the ding dang and restore the surface.

• It is important to assess the severity of the ding dang before attempting to buff it out.

Fixtures and jigs are tools used in manufacturing to hold and guide workpieces during machining or assembly processes.

• Fixtures are devices used to securely hold workpieces in place during machining operations

• Jigs are tools that guide cutting tools or other machinery during operations

• Fixtures and jigs help ensure accuracy, repeatability, and efficiency in manufacturing processes

• Examples include drill jigs for guiding dr...read more

Preventive maintenance is the practice of regularly inspecting, cleaning, and servicing equipment to prevent breakdowns and prolong its lifespan.

• Regularly scheduled inspections and maintenance tasks are performed to identify and address potential issues before they become major problems.

• Examples include changing air filters in HVAC systems, lubricating moving parts in machinery, and checking for leaks in plumbing syste...read more

Computer aided design (CAD) is the use of computer software to create, modify, analyze, and optimize designs for various industries.

• CAD allows engineers and designers to create 2D or 3D models of products or structures.

• It helps in visualizing and simulating designs before they are physically built.

• CAD software can be used in industries such as automotive, aerospace, architecture, and manufacturing.

• Examples of CAD softw...read more

Computer aided manufacturing (CAM) is the use of software to control machine tools and related machinery in the manufacturing of workpieces.

• CAM software generates toolpaths and instructions for machines to follow during the manufacturing process.

• CAM systems can be used for various processes such as milling, turning, and laser cutting.

• CAM helps in automating and optimizing the manufacturing process, leading to increased...read more

Process define of sheet metal part involves determining the steps required to manufacture a sheet metal component.

• Identify the material and thickness of the sheet metal

• Determine the required dimensions and tolerances

• Select the appropriate manufacturing process (e.g. stamping, laser cutting)

• Design the tooling and fixtures needed for production

• Establish quality control measures to ensure the part meets specifications

Yes, mechanical parts can be fully repaired in house by experienced maintenance professionals.

• Having a well-equipped maintenance workshop is essential for in-house repairs.

• Experienced maintenance staff should be able to diagnose and repair mechanical issues efficiently.

• Regular maintenance and proper training can help prevent breakdowns and extend the lifespan of machinery.