To work around the problem with trailing white spaces mentioned by briceburg one should enclose the values in single or double quotes. However, there are still some limitations: Expansion of the dictionaries and lists can produce wrong results when values contain commas. Also, more complex structures like values spanning multiple lines like ssh-keys are not yet supported. The second sed call does the same for the short notation of lists and converts [ entry, The third sed call is the original one that handled normal dictionaries, now with the addition to handle lists with - and indentations.
The awk part introduces an index for each indentation level and increases it when the variable name is empty i. The current value of the counters are used instead of the empty vname. When going up one level, the counters are zeroed. Edit: I have created a github repository for this. Moving my answer from How to convert a json response into yaml in bash , since this seems to be the authoritative post on dealing with YAML text parsing from command line.
I would like to add details about the yq YAML implementation. Since there are two implementations of this YAML parser lying around, both having the name yq , it is hard to differentiate which one is in use, without looking at the implementations' DSL. There two available implementations are. Both are available for installation via standard installation package managers on almost all major distributions. Both the versions have some pros and cons over the other, but a few valid points to highlight adopted from their repo instructions.
Which is pretty straightforward. As of today Dec 21st , yq v4 is in beta and supports much powerful path expressions and supports DSL similar to using jq. Read the transition notes - Upgrading from V3. Hard to say because it depends on what you want the parser to extract from your YAML document. For simple cases, you might be able to use grep , cut , awk etc.
I just wrote a parser that I called Yay! Yaml ain't Yamlesque! However, to quote the OP, if you want a structured configuration file which is as easy as possible for a non-technical user to edit that is YAML-like, this may be of interest. It's inspred by the earlier answer but writes associative arrays yes, it requires Bash 4. It does so in a way that allows the data to be parsed without prior knowledge of the keys so that data-driven code can be written.
This is an example of Yamlesque:. Here is an example showing how to use it:. And here is the parser:. There is some documentation in the linked source file and below is a short explanation of what the code does.
Next, it determines the dataset prefix , either explicitly specified or derived from the file name. It writes valid bash commands to its standard output that, if executed, define arrays representing the contents of the input data file.
The first of these defines the top-level array:. Note that array declarations are associative -A which is a feature of Bash version 4. Declarations are also global -g so they can be executed in a function but be available to the global scope like the yay helper:. The input data is initially processed with sed. It drops lines that don't match the Yamlesque format specification before delimiting the valid Yamlesque fields with an ASCII File Separator character and removing any double-quotes surrounding the value field.
The two expressions are similar; they differ only because the first one picks out quoted values where as the second one picks out unquoted ones. The result is piped into awk which processes its input one line at a time. It uses the FS character to assign each field to a variable:. All lines have an indent possibly zero and a key but they don't all have a value.
It computes an indent level for the line dividing the length of the first field, which contains the leading whitespace, by two. Configuration files control how the operating system or applications behave. Linux systems can and often do have multiple user accounts. Home directories allow each user to separate their data from the other users on the system.
It is important to know which extensions are used for executable files and how they are launched. The operating system knows how to automatically handle EXE files by default. For example, a file with a. But when you open a file with a. To open EXE files, you just need to double-click on it and provide the necessary permissions. Once launched, the installer or the software will run by itself according to operations included in the file.
Some executable files are self-extracting, which means it contains a Zip file and a program to extract the files that were compressed. You can simply double-click the self-extracting archive to launch the executable. The contents of the executable archive will then be dumped to a preconfigured location or a folder of your choice. Another way to open self-extracting EXE files is by right-clicking on it, then choose the self-extracting program to view the contents of the EXE file.
For example, ChromeSetup. For Linux or Unix systems, you might need to add a period and forward slash before the filename to execute it.
In this case, you need to type. So if you have an EXE file that you want to run on a Mac, your first option should be to find a Mac version of the installer or software, then run that macOS-compatible version instead.
If a Mac version of the program is not available, you can use a Windows emulator or virtual machine to launch the EXE file. The section has a variety of options to decide how the texts in the window should appear. Whether you want the text to come in the next line as soon as it reaches the right edge of the window or you want to interpret the cursor position.
Users can choose to disable or enable some of the advanced terminal features of PuTTY like disabling cursor keys, etc. The option allows to predefine a fixed size of the PuTTY window and control the scrolling. Many other configurations can be made using this feature. Under this panel, the appearance of the cursor, the font in the terminal window or even control the window border can be changed. Users can change the course of copy-pasting or the actions of mouse-buttons in Unix environment by making appropriate changes in this panel.
The panel has options that solve any issues when closing of connections while a window is idle. With the option, users can select between the old and new protocols. The auto-login option dismisses the need to type the username every time. It can also specify the terminal needs using this panel. These panels allow configuration of session-related options like changing the mode for negotiation between the server and client, allowing an automated form of login on the server, etc. PuTTY, the open-source and free to download software, provides an easy way to access a Unix shell environment from a windows system.
But this might not be the best place to keep it as it gets cluttered over time. It is better to keep them in a separate directory for easier management.
Else the desktop integration might not work. Maybe some software will check for updates automatically and notify you about the availability of a newer version. There is a command line option to check and update the software but that too depends if the developer provided this option or not. In short, automatic updates are not always possible. It depends whether the developer has added that feature or not.
To me, AppImage is a nice way to use software across Linux distributions. I do hope that the update process improves here to make it much more useful for end users. What do you think of AppImage? Do you prefer to use AppImage in Linux over other formats? Share your views in the comments below. Also a movie buff with a soft corner for film noir.
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