Bash script to start spring-boot app and finish script

Bash script to start spring-boot app and finish script

To create a Bash script that starts a Spring Boot application and then finishes the script execution, you can follow these steps:

Step 1: Create the Bash Script

Create a new file, e.g., start_spring_app.sh, and add the following content:

#!/bin/bash # Command to start the Spring Boot application in the background java -jar /path/to/your/spring-boot-app.jar & # Optionally, wait for some time to ensure the application has started sleep 10 # Add any other commands you want to run after starting the Spring Boot app echo "Spring Boot application started successfully!" # Finish the script execution exit 0

Step 2: Customize the Script

  • Replace /path/to/your/spring-boot-app.jar with the actual path to your Spring Boot application JAR file.
  • Adjust sleep 10 or remove it entirely based on how long your application typically takes to start. This command pauses the script execution for 10 seconds to allow the application to start before proceeding.
  • Add any additional commands after starting the application that you want to execute.

Step 3: Make the Script Executable

Before running the script, make it executable:

chmod +x start_spring_app.sh

Step 4: Run the Script

Execute the script:

./start_spring_app.sh

Explanation:

  1. #!/bin/bash: This line specifies that the script should be interpreted using Bash.

  2. java -jar /path/to/your/spring-boot-app.jar &: This command starts the Spring Boot application in the background (& at the end runs it in a separate subshell).

  3. sleep 10: Pauses the script for 10 seconds. Adjust this value as needed.

  4. echo "Spring Boot application started successfully!": Outputs a message indicating that the application has started.

  5. exit 0: Terminates the script with a success status.

Additional Notes:

  • Ensure that the path to java and your Spring Boot JAR file are correctly set. If java is not in your system's PATH, provide the full path to java.
  • If your Spring Boot application requires any specific environment variables or system configurations, ensure those are set before running the script.
  • Adjust the script as per your specific deployment requirements and best practices for managing background processes in Bash scripts.

Examples

  1. How to write a Bash script to start a Spring Boot application?

    • Description: This query focuses on creating a Bash script that starts a Spring Boot application in the background.
    # Example: Bash script to start Spring Boot application #!/bin/bash # Navigate to Spring Boot application directory cd /path/to/your/spring-boot-app # Start Spring Boot app in the background nohup ./mvnw spring-boot:run > spring-boot.log 2>&1 & echo "Spring Boot application started."

  2. Bash script to check if Spring Boot application is running.

    • Description: Provides a Bash script snippet to check the status of a Spring Boot application running on a specific port.
    # Example: Bash script to check if Spring Boot app is running #!/bin/bash port=8080 if lsof -Pi :$port -sTCP:LISTEN -t >/dev/null ; then echo "Spring Boot application is running on port $port." else echo "Spring Boot application is not running." fi

  3. How to stop a Spring Boot application using a Bash script?

    • Description: Demonstrates a Bash script to gracefully stop a running Spring Boot application.
    # Example: Bash script to stop Spring Boot application #!/bin/bash pid=$(lsof -ti tcp:8080) # Replace 8080 with your Spring Boot app port if [ -z "$pid" ]; then echo "Spring Boot application is not running." else kill -9 $pid echo "Spring Boot application stopped." fi

  4. Bash script to restart Spring Boot application.

    • Description: Provides a Bash script to restart a Spring Boot application after stopping it.
    # Example: Bash script to restart Spring Boot application #!/bin/bash pid=$(lsof -ti tcp:8080) # Replace 8080 with your Spring Boot app port if [ -z "$pid" ]; then echo "Spring Boot application is not running. Starting it..." cd /path/to/your/spring-boot-app nohup ./mvnw spring-boot:run > spring-boot.log 2>&1 & echo "Spring Boot application started." else kill -9 $pid echo "Spring Boot application stopped. Restarting it..." cd /path/to/your/spring-boot-app nohup ./mvnw spring-boot:run > spring-boot.log 2>&1 & echo "Spring Boot application restarted." fi

  5. Bash script to start Spring Boot application with specific profile.

    • Description: Illustrates how to start a Spring Boot application using a specific application profile in a Bash script.
    # Example: Bash script to start Spring Boot application with profile #!/bin/bash profile="dev" cd /path/to/your/spring-boot-app nohup ./mvnw spring-boot:run -Dspring.profiles.active=$profile > spring-boot.log 2>&1 & echo "Spring Boot application started with profile $profile."

  6. Bash script to run Spring Boot application in detached mode.

    • Description: Shows a Bash script snippet to start a Spring Boot application and detach it from the current terminal session.
    # Example: Bash script to run Spring Boot app in detached mode #!/bin/bash cd /path/to/your/spring-boot-app nohup ./mvnw spring-boot:run > spring-boot.log 2>&1 & echo "Spring Boot application started in detached mode."

  7. Bash script to start Spring Boot application and capture logs.

    • Description: Provides a Bash script example that starts a Spring Boot application and captures its logs to a file.
    # Example: Bash script to start Spring Boot app and capture logs #!/bin/bash cd /path/to/your/spring-boot-app nohup ./mvnw spring-boot:run > spring-boot.log 2>&1 & echo "Spring Boot application started. Logs are being captured in spring-boot.log."

  8. Bash script to run Spring Boot application with environment variables.

    • Description: Demonstrates how to start a Spring Boot application with custom environment variables using a Bash script.
    # Example: Bash script to run Spring Boot app with environment variables #!/bin/bash export SPRING_DATASOURCE_URL="jdbc:mysql://localhost:3306/mydatabase" export SPRING_DATASOURCE_USERNAME="myusername" export SPRING_DATASOURCE_PASSWORD="mypassword" cd /path/to/your/spring-boot-app nohup ./mvnw spring-boot:run > spring-boot.log 2>&1 & echo "Spring Boot application started with custom environment variables."

  9. Bash script to start Spring Boot application and wait for it to finish.

    • Description: Provides a Bash script example that starts a Spring Boot application and waits for it to complete.
    # Example: Bash script to start Spring Boot app and wait for it #!/bin/bash cd /path/to/your/spring-boot-app ./mvnw spring-boot:run echo "Spring Boot application execution finished."

  10. Bash script to execute multiple Spring Boot applications sequentially.

    • Description: Illustrates a Bash script to start multiple Spring Boot applications one after another.
    # Example: Bash script to execute multiple Spring Boot apps sequentially #!/bin/bash cd /path/to/your/spring-boot-app1 nohup ./mvnw spring-boot:run > spring-boot1.log 2>&1 & echo "Spring Boot application 1 started." cd /path/to/your/spring-boot-app2 nohup ./mvnw spring-boot:run > spring-boot2.log 2>&1 & echo "Spring Boot application 2 started." # Repeat for additional applications as needed

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