Docker containers, when run in detached mode (the most common -d option), are designed to shut down immediately after the initial entrypoint command (program that should be run when container…
Hadoop’s default output delimiter (character separating the output key and value) is a tab ("\t"). This post explains how to change the default Hadoop output delimiter. Output Delimiter Configuration Property…
Uppercasing and lowercasing is a common task when working with text. Below are examples of doing this with standard Linux/Unix utilities. Lowercasing text with tr tr 'A-Z' 'a-z' Uppercasing text…
sed is a common Linux/Unix utility used to parse and transform text. Below are examples of uppercasing and lowercasing text with sed: Uppercasing Text with sed sed 's/[a-z]/\U&/g' [a-z] is…
jq is a lightweight JSON command line processor that makes many JSON processing tasks very easy. A common task when working with JSON is to convert records into a TSV…
jq is a lightweight JSON command line processor that makes many JSON processing tasks very easy. A common task when working with JSON is to convert records into a CSV…
Tags in Git are a way to bookmark specific commits. This is often done to indicate different versions or releases of a project. There is no straight forward way to…