stow | GNU Stow - mirror of savannah git repository occasionally with more bleeding-edge branches | Configuration Management library
kandi X-RAY | stow Summary
kandi X-RAY | stow Summary
This README describes GNU Stow. This is not the definitive documentation for Stow; for that, see the [info manual] Stow is a symlink farm manager program which takes distinct sets of software and/or data located in separate directories on the filesystem, and makes them all appear to be installed in a single directory tree. Originally Stow was born to address the need to administer, upgrade, install, and remove files in independent software packages without confusing them with other files sharing the same file system space. For instance, many years ago it used to be common to compile programs such as Perl and Emacs from source and install them in /usr/local. By using Stow, /usr/local/bin could contain symlinks to files within /usr/local/stow/emacs/bin, /usr/local/stow/perl/bin etc., and likewise recursively for any other subdirectories such as …/share, …/man, and so on. While this is useful for keeping track of system-wide and per-user installations of software built from source, in more recent times software packages are often managed by more sophisticated package management software such as [rpm] [dpkg] and [Nix] / [GNU Guix] or language-native package managers such as Ruby’s [gem] Python’s [pip] Javascript’s [npm] and so on. However Stow is still used not only for software package management, but also for other purposes, such as facilitating [a more controlled approach to management of configuration files in the user’s home directory] especially when [coupled with version control systems] Stow was inspired by Carnegie Mellon’s Depot program, but is substantially simpler and safer. Whereas Depot required database files to keep things in sync, Stow stores no extra state between runs, so there’s no danger (as there was in Depot) of mangling directories when file hierarchies don’t match the database. Also unlike Depot, Stow will never delete any files, directories, or links that appear in a Stow directory (e.g., /usr/local/stow/emacs), so it’s always possible to rebuild the target tree (e.g., /usr/local). Stow is implemented as a combination of a Perl script providing a CLI interface, and a backend Perl module which does most of the work.
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QUESTION
I know that it's way easier to ensure single instances from the class level, and that there's the excellent Staticish module from Jonathan Stowe that does the same by using roles, but I just want to try and understand a bit better how the class higher order working can be handled, mainly for a FOSDEM talk. I could think of several ways of doing to at the metamodel level, but eventually this is what I came up with:
ANSWER
Answered 2022-Jan-16 at 16:02There's a few misunderstandings in this attempt.
- There is one instance of a meta-class per type. Thus if we want to allow a given type to only be instantiated once, the correct scoping is an attribute in the meta-class, not a
my. Amywould mean there's one global object no matter which type we create. - The
composemethod, when subclassingClassHOW, should always call back up to the basecomposemethod (which can be done usingcallsame). Otherwise, the class will not be composed. - The
method_tablemethod returns the table of methods for this exact type. However, most classes won't have anewmethod. Rather, they will inherit the default one. If we wrap that, however, we'd be having a very global effect.
While new is relatively common to override to change the interface to construction, the bless method - which new calls after doing any mapping work - is not something we'd expect language users to be overriding. So one way we could proceed is to just try installing a bless method that does the required logic. (We could also work with new, but really we'd need to check if there was one in this class, wrap it if so, and add a copy of the default one that we then wrap if not, which is a bit more effort.)
Here's a solution that works:
QUESTION
How can I remove the duplicate from the root. Basically I want to look at the full array at the UUID property. If a UUID from the root of the array is found anywhere else in the array I want to remove the object from the root.
Example: "UUID": "9E741BEC-7BC1-49C0-8214-AB5A65762CB7" is found to the top level of the tree. Its also found in one of the Children. so I want to remove the on that is at the top level
...ANSWER
Answered 2021-Nov-07 at 21:40You can try this:
QUESTION
I've added a README to my dotfile folder and since I'm managing each package with stow I'd like to ignore that. From documentation I've read that by default stow uses a preset list which includes README files. Now, this doesn't seem to work. I've also tried adding a .stow-global-ignore but same error. Even forcing with stow -nv --ignore='README.md' * leads to nothing.
ANSWER
Answered 2020-Oct-10 at 15:50Write a shell script like
QUESTION
I am in need of help trying to get this VBA macro work, I seem to be messing up with the ability to skip the cell's formula returning a 0 value and moving to the next available cell. In the sample image B1:B5 is good but once it hits B7 and B8 I'd like for it to instead return the next value into B9. The area I have quoted out is the area I am running into issues with.
...ANSWER
Answered 2020-Oct-08 at 08:28If I understand correctly, you are trying to prevent entering a badgeID next to a cell whose value is "0". Try like this:
QUESTION
I've looked everywhere and I can't seem to find an answer, or at least one I can understand at my very limited skill level (I'm essentially teaching myself html, css, and js with practice and Google). I am trying to use document.getElementById("button").onclick = buttonfunc; as part of a function with buttonfunc as a parameter. I've been able to call this function easily enough with something equivalent to Buttons(MyFunction);, because if I put the parentheses like Buttons(MyFunction()); my understanding is that it treats the parameter as the value of MyFunction(), even though it's a void function. The problem with this is that I can't pass parameters with the function, meaning I have to make a new function for every new thing I want a button to do, which I would like to avoid if I can because there might be very mundane or similar function. Is there a way to pass a parameter with the function so that I don't have to make a new one for every minute difference? Thanks in advance!
Here is the full code of the function and some examples of its use (I'm making a text adventure with 8 buttons).
...ANSWER
Answered 2020-Sep-01 at 22:37Use the .bind method.
QUESTION
I have a table in KDB with columns date, time, and returns. I need the cumulative returns per day stowed in a new column, but I'm not sure how to separate the sums function by date. This is what I tried:
...ANSWER
Answered 2020-Aug-05 at 14:49you need to include the by clause before the 'from' statement, something like this
QUESTION
I have a table with two columns: time, separation. My goal is to calculate the average time intervals that non-negative separation occurs over the table; so if separation is positive for a while and then switches to negative, I want the amount of time that separation remained positive to be stowed in another table (and vice versa). With a table fully built out of just time intervals where separation switched signs, I need to calculate the average of that.
I also would love to be able to stow the average value of separation over the specific time interval into the table and have it keyed with the length of the time interval.
Hoping to have an end table that has a magnitude of time interval in one column (i.e. 00:00:04.129) and the average value of the separation in that interval (something like +0.0014).
So, how can I grab a time range where the separation column is + or -, and match that with the average value of separation over that period?
...ANSWER
Answered 2020-Aug-03 at 16:01The following small snippet of an example table used to calculate avg separation per period of positive separation:
QUESTION
I get some errors from this SQL code. I am making a mock database for practice. I have looked at some work around and have redone the code a few times.
Everything has been created in order (I believe). Any help would be great! Am I referencing the incorrect tables/columns? Am I referencing different Data types that shouldn't be?
Here are the errors I get:
Msg 547, Level 16, State 0, Line 186
The INSERT statement conflicted with the FOREIGN KEY constraint "fk_bookid". The conflict occurred in database "db_City_Library", table "dbo.Books", column 'BookID'.Msg 547, Level 16, State 0, Line 63
The ALTER TABLE statement conflicted with the FOREIGN KEY constraint "fk_publisher_name_books". The conflict occurred in database "db_City_Library", table "dbo.Publisher",
Code:
...ANSWER
Answered 2020-Jun-08 at 01:04SQL is really easy to learn when you want to! (I see your syntax is = sql, correct me if I'm wrong lol)
I see you are getting those errors because your constraints you did made.
To fix the issue you can use the ALTER TABLE tableName NOCHECK CONSTRAINT constraintName for a specific constraint or ALTER TABLE tableName NOCHECK CONSTRAINT ALL for all constraints.
And you can again just enable them by ALTER TABLE tableName WITH CHECK CHECK CONSTRAINT constraintName for a specific constraint or ALTER TABLE tableName WITH CHECK CHECK CONSTRAINT ALL for all constraints.
I did re-write all of the above per section in a SQLFIDDLE for you... I did only fix the first issue for you by using the method above... I did not touch the others since you want to learn. Let me know if you got stuck so I can help you where you got stuck.
DBFiddle Link
That will be the EASY solutions and not long term solution
If you want a long term solution wait for my edits below:
Update #1 First fixed issue
QUESTION
I have two git repositories with a few shared subdirectories between them, as shown below.
...ANSWER
Answered 2020-May-15 at 19:53I'm not sure why you would want to do this, but technically you could do the following:
QUESTION
When I run:
stow -D folderName
I get:
...ANSWER
Answered 2020-Apr-18 at 21:57Maybe try executing this command before stow:
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