Activity for Canina
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Edit | Post #292117 | Initial revision | — | 6 months ago |
| Answer | — |
A: Forbid concurrent runs of a process This can be done using the `flock` utility. The most useful mode for preventing multiple invocations of a same process is likely to be `-en` (exclusive lock, no wait). You need a file or directory (yes, a directory works!) on which to lock which is shared across instances that must not run simulta... (more) |
— | 6 months ago |
| Edit | Post #292091 | Initial revision | — | 6 months ago |
| Answer | — |
A: Terminal: Continuously check mail, but not too often `watch` will let you do what you want, yes. This can be easily demonstrated by running `watch` with a brief-running command and a delay, such as: $ watch -n2 'date; sleep 5' and observing that the printed time increments in approximately 7-second steps (the two seconds between `watch` execu... (more) |
— | 6 months ago |
| Edit | Post #291774 | Initial revision | — | 8 months ago |
| Answer | — |
A: How to open documentation in qch format in Debian based systems? A web search turned up the Qt online documentation, which suggests using Qt Assistant to organize and read help files packaged as \.qch files. That looks to be packaged by Debian as assistant-qt6. Alternatively, cppreference-doc-en-qch depends on qttools5-dev-tools which in turn pulls in qt5-assis... (more) |
— | 8 months ago |
| Edit | Post #291771 | Initial revision | — | 8 months ago |
| Answer | — |
A: Adding mount points to an existing partition that already has one Yes, bind mounts or possibly rbind mounts is most likely what you want here. You need a rbind mount if you want the contents of file systems mounted below the specified mount point to be accessible in the new location as well; you need a bind mount if you don't want or need that. Given the situati... (more) |
— | 8 months ago |
| Edit | Post #291680 |
Post edited: |
— | 8 months ago |
| Edit | Post #291680 |
Post edited: |
— | 8 months ago |
| Edit | Post #291680 | Initial revision | — | 8 months ago |
| Answer | — |
A: Do domain-specific how-to's fit well within Q&A? My immediate reaction would be that yes, it can definitely fit in the general Q&A category. And there is no rule against self-answers to questions. However, please do take a bit of care with how the respective posts are written. Mainly, the question needs to be self-contained, and it should allow ... (more) |
— | 8 months ago |
| Comment | Post #291145 |
You can also put the input file direction first, if that makes the overall command easier for you to parse. So you can write
</dev/random fooprog
instead of
fooprog </dev/random
if you want. The observable effect is the same: `fooprog` will execute with its standard input set up t... (more) |
— | 10 months ago |
| Edit | Post #290903 | Initial revision | — | 11 months ago |
| Answer | — |
A: Find out which process is using a port Use `netstat -lp`. Typically in such a scenario you will likely be mostly interested in IP sockets, in which case you can also add `-A inet,inet6`. To get numerical port numbers, add `-n` as well. (See the man page for details.) Look at the "local address" field to find the port binding in ques... (more) |
— | 11 months ago |
| Edit | Post #290636 | Initial revision | — | about 1 year ago |
| Answer | — |
A: Can rsync handle moves and renames? I'm quite certain that rsync is not able to deduce that /path/to/src/foldera/filew on one side of the transfer is identical to /path/to/src/folderc/filew on the other side of the transfer. Therefore, rsync won't be able to handle such a move efficiently. To stock rsync, it will appear as one file ... (more) |
— | about 1 year ago |
| Comment | Post #290588 |
This isn't an answer specific to pacman, but if you're using bash, you can use command repetition with a prefix (or suffix).
For example:
$ ls /root
ls: cannot open directory '/root': Permission denied
$ sudo !!
sudo ls /root
[sudo] password for <user>:
<list of fi... (more) |
— | about 1 year ago |
| Comment | Post #290287 |
@#53054 Done. However, please keep in mind that if an edit would invalidate existing answers, it is generally better to post a new question incorporating what you have learned and highlighting how the new is different, than to edit an original question in such a way that existing answers no longer ap... (more) |
— | about 1 year ago |
| Edit | Post #290287 | Initial revision | — | about 1 year ago |
| Answer | — |
A: How to extract string from file, run filter, and replace in file with new value? > - iterate through all `chapter-.xhtml` files in a directory Assuming bash, and assuming that at least one such file exists in the current directory (otherwise adjust the path and/or `shopt -s nullglob`), you can use a simple `for` loop to do this. for filename in chapter-.xhtml; do ... (more) |
— | about 1 year ago |
| Edit | Post #290203 | Initial revision | — | about 1 year ago |
| Answer | — |
A: How to change resolution of virtual terminal? I think that you have two options. The literal answer would be to pass `video=` to the kernel. For example, you could pass `video=720x400` to run the framebuffer at a 720x400 resolution, assuming that the specified resolution is supported by your hardware. See modedb default video mode support and... (more) |
— | about 1 year ago |
| Comment | Post #290113 |
@#61308 I would honestly not consider it a "small detail" whether you are interested in answers for, say, FreeBSD, Windows Subsystem for Linux, Mac OS X, Linux, or Illumos, to name just a few possibilities; especially for a question where answers are likely to touch on deep aspects of the workings of... (more) |
— | over 1 year ago |
| Edit | Post #290113 | Question reopened | — | over 1 year ago |
| Edit | Post #290113 | Question closed | — | over 1 year ago |
| Comment | Post #289952 |
@#65961 That *should* be just the first time, yes; the first time they are accepted, the SSH client should save the new host keys so that they are known on the next connection. (more) |
— | over 1 year ago |
| Comment | Post #290113 |
What operating system(s) are you interested in answers for?
I'm closing the question for the moment, but if you clarify this, I suspect it will be answerable. Feel free to flag for reopening after editing. (more) |
— | over 1 year ago |
| Comment | Post #290013 |
@#65946 That's odd; I tried my example in a Trixie VM and got the same results that I showed in my answer. Well, whatever works for you. Hopefully this will be useful for someone else. (more) |
— | over 1 year ago |
| Edit | Post #290013 |
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— | over 1 year ago |
| Edit | Post #290013 |
Post edited: |
— | over 1 year ago |
| Edit | Post #290013 | Initial revision | — | over 1 year ago |
| Answer | — |
A: Rename multiple files which have a variable suffix You can use rename for this. Many distributions package it; for example, it's apt-get install rename in Debian. In normal usage, it is used to apply an arbitrary regular expression substitution expression to the name of each file named on the command line, allowing you to do complex renamings rela... (more) |
— | over 1 year ago |
| Edit | Post #289952 | Initial revision | — | over 1 year ago |
| Answer | — |
A: How to bypass SSH destination host key fingerprint check? I'm going to assume that you're using OpenSSH, since that is probably the most common SSH implementation on present-day \nix systems. The easiest is probably to use `ssh-keygen -R` to delete all known host keys for a given host name. So if you have just reprovisioned `vps1.example.com` and it ther... (more) |
— | over 1 year ago |
| Comment | Post #289799 |
When all else fails, there's always the brute force way.
I don't have abook installed, but based on the man page you linked it doesn't look like it supports an output format that will natively do what you want. However, based *only* on your one example, might this do the trick?
`$ abook --mutt-... (more) |
— | over 1 year ago |
| Edit | Post #289792 | Question reopened | — | over 1 year ago |
| Edit | Post #289718 | Initial revision | — | over 1 year ago |
| Answer | — |
A: How to see all header fields of an email in mutt? When viewing a message, press `h`. To return to the normal view, press `h` again. With typical viewer key bindings, `h` is bound to the `display-toggle-weed` function, which controls whether all headers are displayed or whether headers are "weeded". (Under the hood, it toggles the `$weed` boolean ... (more) |
— | over 1 year ago |
| Edit | Post #289523 |
Post edited: |
— | over 1 year ago |
| Edit | Post #289523 | Initial revision | — | over 1 year ago |
| Answer | — |
A: Run a command *later* The traditional way on a \nix system to run a one-time command at some specified future time is `at`. $ at 'now + 10 minutes' at Wed Aug 23 19:00:00 2023 at> date >> /current-time at> ^D job NNN at Wed Aug 23 19:00:00 2023 $ You can also specify a particular time, w... (more) |
— | over 1 year ago |
| Comment | Post #289442 |
There might be some edge case where you need to use `sudo` for `ip addr show`, but generally, that's an unprivileged command. So there should be no need for `sudo` in this case. (more) |
— | over 1 year ago |
| Edit | Post #289069 |
Post edited: Replace the message with an example less likely to be offensive |
— | over 1 year ago |
| Edit | Post #289045 |
Post edited: |
— | over 1 year ago |
| Edit | Post #289045 |
Post edited: Can't believe I forgot the SOA and NS RRs |
— | over 1 year ago |
| Edit | Post #289045 | Initial revision | — | over 1 year ago |
| Answer | — |
A: How do I set up my own DNS on my LAN, with delegation of public domains? What you describe is a typical mixed authoritative/recursive resolver setup. Such a DNS server setup will respond from its own data about zones for which it has explicit configuration, and will perform recursive resolution for any other names on behalf of clients. Exactly how to set it up depends ... (more) |
— | over 1 year ago |
| Comment | Post #288929 |
I'm not up to writing an actual answer, and if someone wants to take this and turn it into an answer before I have a chance to then that's fine by me; but actually using the MAC address directly to generate an IPv6 address, as that page seems to do, has been broadly discouraged for a good while.
S... (more) |
— | over 1 year ago |
| Comment | Post #288311 |
I believe it can have, at least in some circumstances. With the GNU coreutils 8.32 `ls` and GNU findutils 4.8.0 `find` on Debian 11/Bullseye, observe:
$ cd $(mktemp -d)
$ touch abc$'\n'def
$ /bin/ls -N
abc?def
$ /bin/ls
'abc'$'\n''def'
$ find . -type f -print
... (more) |
— | over 1 year ago |