Personal Notes or My Attempts

Table of contents

1. Setting up
   1. Setting up maven in ubuntu
   2. Install maven using apt
   3. Using crontab to purge RAM and disk cache routinely (MacOS version)
   4. Check MacOS sudo crontab log with this command:
   5. sudo log show –predicate ‘process == “cron”’ –info
   6. Clear Disk Cache (sudo purge)
   7. Clear RAM Cache (every hour)
   8. Extra: You can use this bash script to check the logs for running your crontabs

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Setting up

Setting up maven in ubuntu

1. Install maven using apt

    sudo apt update && sudo apt install maven 
   

   Enter sudo password, Type Y if needed

2. Please check with mvn -v after installation

3. Since this mvn comes with jdk 11, we need to update to jdk 22 Try wget https://download.oracle.com/java/22/latest/jdk-22_linux-x64_bin.deb

4. Then try sudo apt install jdk22 sudo apt install ./jdk-22_linux-x64_bin.deb

5. Check with java -version taht your java version is now on 22.0.1!

6. Please reun mvn clean install -Dmaven.test.skip=true

Using crontab to purge RAM and disk cache routinely (MacOS version)

1. sudo crontab -l check what crontab is running
2. sudo crontab -e and add the following lines
3. • ```bash

     Check MacOS sudo crontab log with this command:

     sudo log show –predicate ‘process == “cron”’ –info

   Clear Disk Cache (sudo purge)

   • • • • • sudo purge

   Clear RAM Cache (every hour)

   0 * * * * rm -rf ~/Lib/Caches/* ```

4. Extra: You can use this bash script to check the logs for running your crontabs

    sudo log show --predicate 'process == "cron"' --info