Notepad++

In order to open a file in Linux, the first step is to identify the file’s location. This can be done by using the ‘ls’ command to list all files and directories in the current directory, and the ‘pwd’ command to print the working directory....

It doesn't look like it supports different colours for different levels of nesting, though. These will be customized to the grammar of the configuration file. Since these are JSON configuration files, enter double-quotes around each keyword and be sure to select the “Prefix mode” checkbox....