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Linux Commands – Looping Through Directories Linux 1. Overview There are various occasions when we might want to loop through all the directories in a given folder. For example, we may want to iterate through all the directories and run a particular command in each folder. In this tutorial, we’re… Continue Reading linux-loop-directories
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Linux Commands – Delete Files Older Than X Linux 1. Overview We often need to tidy up files on our workstations or servers. Our applications may produce logs or temporary files. One common use case is to delete files that are above a certain age. In this tutorial, we’ll look… Continue Reading linux-delete-files-older-than
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Silencing the Output of a Bash Command Linux 1. Overview In this quick tutorial, we’ll focus on how to silence the output of a Bash command. 2. Prerequisites Before silencing the output, we first need to understand how Bash handles output when executing a command. 2.1. Standard Output & Error… Continue Reading linux-silencing-bash-output
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Find Files That Have Been Modified Recently in Linux Linux 1. Introduction There are various occasions when we want to search for files that have been changed recently. For example, as a system admin, we’re responsible to maintain and configure computer systems. Sometimes, because we’re dealing with a lot of… Continue Reading linux-recently-changed-files
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Copy a File to Multiple Directories on Linux Linux 1. Overview In this tutorial, we’ll learn how to copy a file to multiple directories on Linux. The commands will work on any POSIX shell, including bash. 2. To A Single Directory We can use the cp command to copy files… Continue Reading linux-copy-file-to-multiple-directories
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A Collection of Spring Tutorials Persistence REST Security Series Spring Hibernate JPA I started the REST Security project on GitHub to explore writing an elegant REST Services with the latest and greatest Spring had to offer. That was Spring 3.1 and now Spring 3.2, moving towards Spring 4.0 and 4.1.… Continue Reading this-is-not-your-fathers-spring-a-learning-project
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Upload on S3 with the jclouds library Cloud AWS There are several good ways to upload content to an S3 bucket in the Java world – in this article we’ll look at what the jclouds library provides for this purpose. To use jclouds – specifically the APIs discussed in this… Continue Reading upload-on-s3-with-jclouds
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Multipart Upload on S3 with jclouds Cloud AWS 1. Goal In the previous article on S3 uploading, we looked at how we can use the generic Blob APIs from jclouds to upload content to S3. In this article we will use the S3 specific asynchronous API from jclouds to upload… Continue Reading multipart-upload-on-s3-with-jclouds
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String API Updates in Java 12 1. Introduction Java 12 added a couple of useful APIs to the String class. In this tutorial, we will explore these new APIs with examples. 2. indent() The indent() method adjusts the indentation of each line of the string based on the argument passed… Continue Reading java12-string-api
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Introduction to EasyMock 1. Introduction In the past, we’ve talked extensively about JMockit and Mockito. In this tutorial, we’ll give an introduction to another mocking tool – EasyMock. 2. Maven Dependencies Before we dive in, let’s add the following dependency to our pom.xml: <dependency> <groupId>org.easymock</groupId> <artifactId>easymock</artifactId> <version>3.5.1</version> <scope>test</scope> </dependency> The… Continue Reading easymock
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