Activity for r~~
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Edit | Post #294057 |
Post edited: |
— | 19 days ago |
| Edit | Post #294057 | Initial revision | — | 19 days ago |
| Answer | — |
A: Temporarily making \u escapes use a different encoding on the command line I don't think you can persuade Bash to use non-UTF-8 characters internally—I expect much of its code assumes that strings are ASCII-compatible. So `$'\u00FF'` will always translate, inside Bash, to the UTF-8 byte sequence `c3 bf`. If you want to take a UTF-8 byte sequence that Bash (or another uti... (more) |
— | 19 days ago |
| Edit | Post #294056 | Initial revision | — | 19 days ago |
| Answer | — |
A: greedy capture with sed The `b\+` part of the regex is already greedy. In sed, all repetitions are greedy. Your problem is that the initial `.` is also greedy, and so that's gobbling up both the `a` and as many `b`s as it can. For this example, you can change that part to `[^b]`: ``` $ sed -n 's/[^b]\(b\+\)./\1/p' <<< a... (more) |
— | 19 days ago |
| Edit | Post #293003 | Initial revision | — | 7 months ago |
| Answer | — |
A: how to use %F in a file URI in a .desktop file From the Desktop Entry Specification: > A command line may contain at most one %f, %u, %F or %U field code. Try storing %F in a local variable and reusing the variable. Also, take care: %F will in general expand to a list of files, which your current script will not adequately handle. Use %... (more) |
— | 7 months ago |
| Comment | Post #292980 |
Just to make sure, you do know that the output of the `h` command (and other commands with outputs) goes to the kernel log and not your current terminal, right? You need to run `dmesg` to see it. (more) |
— | 7 months ago |
| Edit | Post #291650 | Initial revision | — | about 1 year ago |
| Answer | — |
A: How do I send console output to the clipboard? On Wayland, the `wl-clipboard` utility `wl-copy` is the program you want: ``` echo hi | wl-copy ``` (more) |
— | about 1 year ago |
| Comment | Post #285187 |
Pick one, get corrected if necessary. (more) |
— | about 1 year ago |
| Edit | Post #291146 | Initial revision | — | about 1 year ago |
| Answer | — |
A: How do you generate arbitrary random numbers from /dev/random? You want `shuf`. ```sh shuf -n1 -i 534-876874 ``` (more) |
— | about 1 year ago |
| Edit | Post #291145 | Initial revision | — | about 1 year ago |
| Answer | — |
A: What is cat abuse/useless use of cat? Especially in a pedagogical context, the issue with something like `cat /dev/random | head -c 20` versus the more straightforward `head -c 20 /dev/random` is that it communicates that extra ceremony is necessary. It isn't. Using one program instead of two isn't about saving kilobytes of computer memo... (more) |
— | about 1 year ago |
| Comment | Post #291137 |
`<file1 | grep cookies | wc` might work in your shell of choice but it doesn't work in Bash.
I look forward to your mocking rant about people who point out that other shells exist. (more) |
— | about 1 year ago |
| Comment | Post #290827 |
The answer says, ‘`sudo ls ~` [prints] the contents of your actual home directory [...] This is because [...] `sudo` [...] does not change your `$HOME`’. This is doubly false, as I explained—`sudo` can change `$HOME`, and the behavior of `sudo ls ~` doesn't depend on whether or not it does. (more) |
— | over 1 year ago |
| Edit | Post #290837 |
Post edited: |
— | over 1 year ago |
| Edit | Post #290837 | Initial revision | — | over 1 year ago |
| Answer | — |
A: How to use the gitignore file without git(1). You can fake out `git` as long as you have some empty Git repository available somewhere. ``` git --git-dir=path-to-empty-repo/.git \ ls-files --others --exclude-standard ``` (more) |
— | over 1 year ago |
| Comment | Post #290827 |
`sudo ls ~` will not tell you whether `sudo` sets `HOME`, because the `~` is expanded by the non-root user's shell. In many distributions, `sudo` *is* configured to set `HOME` by default. There are several configuration options that determine whether `sudo` modifies `HOME` or other environment variab... (more) |
— | over 1 year ago |
| Edit | Post #290797 |
Post edited: cat isn't needed |
— | over 1 year ago |
| Suggested Edit | Post #290797 |
Suggested edit: cat isn't needed (more) |
helpful | over 1 year ago |
| Comment | Post #290716 |
Have you read what sudo does? If so, it's not clear what you want to know. If not, this is insufficient research for a question here. (more) |
— | over 1 year ago |
| Comment | Post #290201 |
On Debian Trixie, if you have the `console-setup-linux` package installed, [the files in that package](https://packages.debian.org/trixie/all/console-setup-linux/filelist) include terminal fonts of sizes up to 16x32.
And yes, the character grid is changed, not just the glyph sizes. A 16x32 font wo... (more) |
— | over 1 year ago |
| Edit | Post #290201 | Initial revision | — | over 1 year ago |
| Answer | — |
A: How to change resolution of virtual terminal? This isn't exactly what you asked, but the letters-too-small problem could also be solved by using a larger console font. Here is a decent overview of how to change console fonts, though I don't know which of the `console-setup` and the `vconsole.conf` approaches is correct for your distribution. (more) |
— | over 1 year ago |
| Edit | Post #290012 |
Post edited: |
— | over 1 year ago |
| Edit | Post #290012 |
Post edited: |
— | over 1 year ago |
| Edit | Post #290012 | Initial revision | — | over 1 year ago |
| Answer | — |
A: Rename multiple files which have a variable suffix An easy one-liner in POSIX-compatible shells: ``` for f in -min.jpg-; do mv -- "$f" "${f%-}"; done ``` The only (mildly) tricky concept here is `${f%-}`, which expands to `$f` minus the shortest suffix matching the glob pattern `-`. (more) |
— | over 1 year ago |
| Edit | Post #289874 |
Post edited: |
— | over 1 year ago |
| Comment | Post #289874 |
That is a really good catch, thanks. (more) |
— | over 1 year ago |
| Comment | Post #289874 |
Piping is a shell feature. If you want to use shell features, you have to be running in a shell. The `find` manual isn't responsible for pointing that out.
[It is specified](https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_13_03) that wildcards in shell scripts must... (more) |
— | over 1 year ago |
| Comment | Post #289874 |
The `\! -empty` is there because if the shell expands a wildcard that doesn't match anything, the wildcard remains, and you don't want `.../empty_dir/*` in your output.
The `ls` is an unnecessary subprocess invocation. `sh` is already expanding the `*` before `ls` is invoked. (more) |
— | over 1 year ago |
| Comment | Post #289875 |
Fair, post edited. (more) |
— | over 1 year ago |
| Edit | Post #289875 |
Post edited: |
— | over 1 year ago |
| Edit | Post #289875 | Initial revision | — | over 1 year ago |
| Answer | — |
A: How to overwrite each line of STDOUT with the next one? In Bash, you could use the `$COLUMNS` environment variable to detect the width of your terminal and truncate each line to that length in your sed script. Something like this should work: ``` sed "s/^\(.\{,$COLUMNS\}\).$/\1/;2,\$s/^/\x1B[1A\x1B[K/" ``` For a sh-compatible alternative, replace ... (more) |
— | over 1 year ago |
| Edit | Post #289874 | Initial revision | — | over 1 year ago |
| Answer | — |
A: How to list the first x files in each directory Is this what you want? Edit: Credit to Kamil Maciorowski for catching an unsafe interpolation in the previous draft; it will work for non-adversarial inputs but this newer version is safer and a better example to learn from. ```sh find l1 -mindepth 2 -maxdepth 2 \ -type d \! -empty \ -... (more) |
— | over 1 year ago |
| Edit | Post #289798 | Initial revision | — | over 1 year ago |
| Answer | — |
A: How does the root user locate executables? > but it clearly does see that change. Nope. Your environment is being reloaded in the `sudo` process. `sudo echo $PATH` gives the same result as `echo $PATH` because `$PATH` is expanded by your shell first thing, before `sudo` gets spawned. If you want to see the value of `PATH` from inside `s... (more) |
— | over 1 year ago |
| Edit | Post #289755 | Initial revision | — | over 1 year ago |
| Answer | — |
A: Why does $XDG_DATA_HOME default to ~/.local/share? I wasn't there two decades ago when the spec was first being developed, but based on other parts of the spec they're clearly attempting to establish a parallel with `/usr/local`. The intended minimal `PATH=/.local/bin:/usr/local/bin:/usr/bin:/bin`; `XDGDATAHOME` and `XDGDATADIRS` form a similar order... (more) |
— | over 1 year ago |
| Edit | Post #289659 |
Post edited: |
— | almost 2 years ago |
| Edit | Post #289659 |
Post edited: |
— | almost 2 years ago |
| Edit | Post #289659 | Initial revision | — | almost 2 years ago |
| Answer | — |
A: Are NixOS and Guix analogous projects? They are broadly analogous; there's a lot of cross-pollination of ideas between the projects. Some terminology first, because you'll notice that both columns have duplicate entries and this often confuses the conversation. | Component | in Nix | in Guix | | - | - | - | | package expression la... (more) |
— | almost 2 years ago |
| Edit | Post #289607 | Initial revision | — | almost 2 years ago |