Activity for Karl Knechtelâ€
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Comment | Post #293190 |
I'm thinking of making a "commander"-style program, and one of the things I'd like to do is display output inline in a terminal window if it's all generated up front, but automatically background the process and handle it in a separate window if it requires input (so that the user can go back to writ... (more) |
— | 10 days ago |
| Edit | Post #293190 | Initial revision | — | 20 days ago |
| Question | — |
Check if piped-in process is blocked on input Suppose I am the author of a shell utility called `bar`. One common use case is in pipelines like `foo | bar`, where `foo` sometimes runs interactively. I want to distinguish situations where interaction is required from situations where `foo` produces all its output up front and immediately exits. ... (more) |
— | 20 days ago |
| Edit | Post #293130 | Initial revision | — | 28 days ago |
| Question | — |
How can I simply persist functions written in the current terminal session for later use? Suppose I write a Bash function at the command line: ``` $ hello-world() { echo "Hello, world!"; } ``` and I revise (perhaps hitting up-arrow to retrieve it from command history and edit it) and test and debug it, and eventually have a working function that does what I want: ``` $ hello-w... (more) |
— | 28 days ago |
| Edit | Post #293027 | Initial revision | — | about 2 months ago |
| Answer | — |
A: Partially moving /home to a new partition, leaving some content behind There are two key ideas here: 1. Moving data between partitions entails copying it onto the new one and then deleting it from the original - just like copying between different physical drives. However, of course, the deletion can be postponed arbitrarily; not deleting leaves a potentially useful ... (more) |
— | about 2 months ago |
| Edit | Post #293022 | Initial revision | — | about 2 months ago |
| Question | — |
Running an executable through a symlink, at the target's location I have this test setup: ``` $ cat first #!./second one two three $ cat second #!/usr/bin/env python import sys for line in open(sys.argv[1]): print(line, end='') ``` After `chmod +x` on the files, I can successfully run `./first` from this directory and it displays its own source... (more) |
— | about 2 months ago |
| Comment | Post #292980 |
@#53410 I suspect that's really the basis of the answer - the key does work, and the question should be clarified along the lines of "why don't I see output...?". Although that depends on what sysrqs *are* working for OP with more observable effects. Before checking whether the expanded permissions w... (more) |
— | about 2 months ago |
| Suggested Edit | Post #293000 |
Suggested edit: improve clarity and conciseness (more) |
pending | about 2 months ago |
| Suggested Edit | Post #293006 |
Suggested edit: fix formatting, rm noise, improve clarity (e.g. remove references to an irrelevant/unclear "we"), ask a question explicitly (more) |
pending | about 2 months ago |
| Edit | Post #292963 | Initial revision | — | 2 months ago |
| Question | — |
If I have /home on a separate partition, how can I move it back to the root partition? Some Linux users prefer to have `/home` mounted on a separate partition from the filesystem root, while others prefer a unified partition. I can find plenty of tutorials out there for moving `/home` onto a new partition, starting with a unified one. But what if I wanted to go backwards? Say for ex... (more) |
— | 2 months ago |
| Edit | Post #292906 |
Post edited: misc grammar fixes |
— | 3 months ago |
| Edit | Post #292914 | Initial revision | — | 3 months ago |
| Question | — |
Partially moving /home to a new partition, leaving some content behind I have a partition and directory structure that looks like: ``` small partition: / usr var ... # etc. large partition: /home shared otherstuff largefolder user1 ... user2 ... medium partition: (empty) ``` The other par... (more) |
— | 3 months ago |
| Edit | Post #292913 |
Post edited: |
— | 3 months ago |
| Edit | Post #292913 |
Post edited: |
— | 3 months ago |
| Edit | Post #292913 | Initial revision | — | 3 months ago |
| Answer | — |
A: Getting a Module Error When Running Pytest Even Though the Module is Installed in the Current Virtual Environment Although the system package manager was involved for your setup, this is really just a special case of a pure Python issue. When you run a program like Pytest that is itself written in Python, generally the "executable" is just a wrapper that invokes Python to `import` the corresponding library an... (more) |
— | 3 months ago |
| Suggested Edit | Post #292906 |
Suggested edit: misc grammar fixes (more) |
helpful | 3 months ago |
| Comment | Post #292912 |
What exactly does it mean to say that Bash will "test for existence" of `${2}`? That is: what will be the final result of `"${2-}"` when `${2}` is set, and what will be the result when it is not set? Or does the "test" instead have some side effect to indicate the result? (more) |
— | 3 months ago |
| Comment | Post #292330 |
For far more detail about this issue, see: https://unix.stackexchange.com/questions/85249 (more) |
— | 5 months ago |
| Edit | Post #292330 | Initial revision | — | 5 months ago |
| Answer | — |
A: Find path to an executable `which` only tells you about a path that would be found in PATH. Often, people who think they have this question have a more general question - i.e., what will be used when the named command is requested. In particular, aside from being executables on PATH, commands can also refer to shell builtins. ... (more) |
— | 5 months ago |
| Edit | Post #292293 |
Post edited: hopefully clearer wording |
— | 5 months ago |
| Edit | Post #292293 |
Post edited: incorporate samcarter's comment suggestion |
— | 5 months ago |
| Edit | Post #292293 | Initial revision | — | 5 months ago |
| Answer | — |
A: What desktop environment am I running? By memory If you installed Linux yourself, then you were almost certainly informed about this at some point in the process. Generally, you're either expected to choose a separate installer according to which desktop environment you want, or you don't get a choice and the desktop environment is jus... (more) |
— | 5 months ago |
| Comment | Post #292252 |
What exactly are you expecting to see, and how is that different from what you "view as text"? (more) |
— | 5 months ago |
| Comment | Post #291925 |
That would be ideal, but a program that maintains its own cache (with timestamps, so it knows when the information is stale) can still make a massive improvement. For example, a program could see that a folder has been modified since the cache update, and then it would only have to stat the files at ... (more) |
— | 6 months ago |
| Comment | Post #291964 |
What I mean is that if I quit and restart the program, it will re-scan everything. Nothing is, as far as I can tell, persisted between separate runs of the program. (more) |
— | 6 months ago |
| Comment | Post #291925 |
Oh, no, it's *physically mounted* internally but it's a 2.5" SSD connected by SATA. What I meant by "internal" is that it isn't limited by USB (even 3.0). I'd prefer not to benchmark the disk formally at the moment because my backup setup is currently less than stellar. But it should be capable of so... (more) |
— | 6 months ago |
| Comment | Post #291964 |
As it happens, I have this program (Baobab) included with my system. It only gets me a small part of the way there. It "caches", but only within a given run of the program - it doesn't persist that data. (Of course, storing the cache could itself invalidate a small part of that data; but I'm pretty s... (more) |
— | 6 months ago |
| Comment | Post #291925 |
On my system, `time du -s ~` is reporting over a minute of real time, for less than half a million files (per `find ~ -type f | wc -l`, which incidentally is much faster). This is from an internal SSD, so disk throughput shouldn't be the problem. Could it be a quirk of ext4? (Are you using something ... (more) |
— | 6 months ago |
| Comment | Post #291925 |
Those help with accounting for hard links specifically, but not with the overall question here. Although I'd like to be able to get at the actual system call for the link count in order to do more sophisticated things; but that's a separate question. (more) |
— | 6 months ago |
| Comment | Post #291925 |
I understand that files could be hard-linked in multiple places within the file system, which raises questions about how to account for them (i.e., which folder counts as "responsible for" the disk usage for that file, or if that usage should even be considered shared between multiple containing fold... (more) |
— | 7 months ago |
| Edit | Post #291925 | Initial revision | — | 7 months ago |
| Question | — |
Efficiently determining disk usage of a folder (without starting from scratch every time) When I use my computer, one question I commonly want to answer for myself is "how much space is being used by the contents of this folder?". Typical file/window managers, IMX, answer this question the same way that Windows does: by recursing over directory contents and summing their logical sizes. Th... (more) |
— | 7 months ago |
| Comment | Post #291597 |
In Gnome (well, in Mint, which is running Cinnamon, which comes with a bunch of Gnome utilities). I guess it's effectively unrelated software with the same name. :/ (more) |
— | 7 months ago |
| Comment | Post #291597 |
... That said, I can't seem to find any option to show GPU information in this application... ? (more) |
— | 7 months ago |
| Edit | Post #291878 | Initial revision | — | 7 months ago |
| Question | — |
How can I check GPU usage? Linux Mint comes with "System Monitor", a GNOME utility that - among other things - shows my CPU and RAM usage and network transfer rate. It seems intended as the system's alternative to the Task Manager in Windows. However, this doesn't show me GPU usage. I'd like to be able to check whether a gi... (more) |
— | 7 months ago |
| Edit | Post #291849 | Initial revision | — | 7 months ago |
| Question | — |
Why don't LTS distros consistently use/offer LTS kernels? I've noticed that the default kernel selection for Ubuntu 22.04, for example, is Linux 5.15.0. Ubuntu 22.04 is a LTS release, which is supposed to have standard support until April 2027, and Linux 5.15 is also LTS supported until October 2026 - so there won't be too much of a gap there (and such gaps... (more) |
— | 7 months ago |
| Edit | Post #291842 | Initial revision | — | 7 months ago |
| Question | — |
Clarifying terminology related to mounting I understand that "mounting" in Linux refers to associating some "device" (usually some storage drive or a partition thereof, but it could be a region of RAM, some memory-mapped hardware, etc.) with a filesystem node. But - does "mount point" mean the node, or the device? Which of the two is "moun... (more) |
— | 7 months ago |
| Comment | Post #291819 |
To be honest, I was hoping more for something that highlights and enumerates the individual terms like "init system", "display manager" etc. The prose is nice for giving a sense of the complexity of the system, but doesn't seem very helpful for mentally managing that complexity. For example, CUPS was... (more) |
— | 7 months ago |
| Comment | Post #291786 |
I more or less rewrote the question to try to express what I'm getting at more clearly. How does it look now? (more) |
— | 7 months ago |