I have a simple sync script i run when creating custom images and recently i switched to using rsync to copy the files, the two lines are as follows:
rsync -aP folder/folder/source destination/
rsync -aP folder2/folder2/source2 destination/
When i run the following, as soon as it hits line one...
@Videonauth Repression is nothing new. Happened to Christians in Rome, Jews in Germany, so-called witches in Salem. This new era of repression and first the attack against family values and now the attack against gender distinctions is fascinating to watch as long as you don't get too emotionally involved. If it depresses you looking away and turning a deaf ear to achieve blissful ignorance is probably the best course of action. My hobby is judging so I can't stop myself from watching.
@JourneymanGeek A school group I'm in decided to use WhatsApp for their conversations. Really don't want to download it, but also don't want to be that person who won't use the agreed upon communication system.
I already get teased by my friend with gigabit. "Oh you're playing a new game? I'll go download it real quick." "... It already finished, didn't it?" "Yep :P"
I set on ubuntu server in vm :
address : 192.168.1.100
getway : 192.168.1.1
and I set in network adaptor's config :
NAT and port forwarng :
HOST IP : 127.0.0.1
GUEST IP : 192.168.1.100
how ssh to vm by my ubuntu host ?
I have some strange behaviour on my Ubuntu-mate 16.04. After startup the shortkeys to increase sound (Fn+..) are not working. There is also a cross after the speaker icon on the top bar. But the sound is working, I just need to adjust it via Sound Preference.
Another issue that I have is that the...
I've been spending quite some time on Meta Stack Exchange and came upon a thoughtful and thought-provoking answer by Shog9: meta.stackexchange.com/a/334445
I found one of his posts, about the usefulness (or not) of meta, particularly helpful recently. It said something like
If you spend all your time sharpening your tools, you will never get anything cut, but also, if you never stop to sharpen your tools, you will never get anything cut
Oh. "Stop to do x" means stop doing y so that you can do x. So here y is cutting and x is sharpening
I forgot that it's a common mistake to say/write "stop to x" when the intention is to mean "stop x-ing"
So if what I'm saying is still totally unclear, I'll try to write it again!
If you spend all your time sharpening your tools, you will never get anything cut, but if you never sharpen your tools at all, you will also never get anything cut
@traducerad And you don't want the process to handle the deletion?
What are you trying to do exactly? Just have a file that indicates the process is running?
You could try and create something in /proc/$processPID/. That is destroyed when the process exits, but using that can be tricky depending on what you're doing.
@terdon Not really. I want to have one parent process to setup an environment with a bunch of files. The child will use those files and create more files. Once the child dies, the parent should too and all the created files should be deleted then.
I'd like to investigate when files in /tmp get removed. I run CentOS 7. Policy regarding deleting files from that directory is governed as follows:
RHEL7 and RedHat-like with systemd it's configured in
/usr/lib/tmpfiles.d/tmp.conf, called by systemd-tmpfiles-clean.service)
I guess that th...
@traducerad sounds like a pretty interesting question. I would recommend asking on Unix & Linux. There is more expertise on this sort of low-level stuff there.
@traducerad I don't know if this will work for your situation, but the common way automatic deletion of files is achieved in a Unix-like operating system is for a program to create a temporary file, open the file, and immediately delete the file while it is still open. The file will continue to exist on disk until the last process that is using it (more precisely: that has it open) has terminated. The open file descriptors can be inherited by child processes when the parent process creates them.
This does not work for all situations, but it works for more situations that it intuitively feels like it would work for. In particular, on systems that use the Linux kernel or otherwise support the /proc filesytem (which of course includes GNU/Linux systems like Ubuntu), files that have been deleted but that a process still has open can be accessed even by unrelated processes through their file descriptors' numbered entries in /proc/$PID/fd/ (where $PID is the owning process's PID).
@EliahKagan The problem is that apparently, @traducerad only controls the parent process and the files are created by a child process. There seems to be no way of knowing what files the child will create nor control where it will create them.
So the parent would have to watch it run, maybe through strace, and capture all file creation events.
Even without using strace (or equivalent), the parent process should able to look inside the child process's subdirectory in /proc, access its open files that way, and--by opening them itself--preserve them until it (the parent) has terminated, if that's what's needed. But I think more details would have to be known about the problem to know if such a approach would be reasonable. It might not be.
I agree that having child processes make new files that ought to survive as long as the parent but no longer does complicate the problem. If a question is posted on Unix & Linux about this, I'll be quite interested to see what answers people devise.
Yes. If no restrictions can be imposed on how or when the child processes create files, then the idea I am proposing would not work (or at least would not be a good approach).
Currently the box is running ubuntu 17.04. Since that version is no longer getting updates. I would like to upgrade it to 18.04. However i am a bit concerned that it might affect the php 5 installation from a custom ppa.
Has anyone done this and did not encounter any problems?
Thanks
@WinEunuuchs2Unix The timeline indicates that my comment preceded the closure by more than an hour. So clarification was sought before it was closed. On the other hand, if you're suggesting we should wait some amount of time between requesting clarification and closing a question, then I don't know.
Personally, I don't think we should wait to close unclear questions. They can be reopened if they become clear. The system even shows such questions as "on hold" rather than "closed" to avoid discouraging their authors from improving them.
@EliahKagan There is no set amount of time to give someone to revise their question I guess. I think 24 hours should be appropriate in most cases though. The whole "stick" part of the question could have made it unclear to many. If you remove all the stick nonsense then you are left with "When I boot Ubuntu I get an error"
@EliahKagan As far as the 1 hour time given that is OK when someone is logged into Ubuntu. But this poor fellow has installed Ubuntu many times and each time takes over an hour. He would have rebooted into Windows to post his question in between. My hunch is he has a classic error message which can quickly be closed as a duplicate. We just really really need to know what the error message is...
I don't understand what that has to do with when the question is closed. The OP can add information to the question after it is closed, and the question can be reopened once it contains enough information. I don't think there's any good reason to wait to close questions that aren't clear, regardless of whether or not the OP is logged into the site at the time the question is closed.
What would be a problem would be to immediately delete a question that could be improved, without giving the OP a chance to improve it. Closure is not deletion.
Closing a question that is unclear as "unclear what you're asking" makes it more apparent that it is unclear, so it actually makes it more likely that the OP will become aware that the question needs improvement. My view on this is that waiting to close a question, with the hope that the OP will edit it so it doesn't need to be closed, does a disservice to the OP, as well as to Ask Ubuntu users as a whole. In my opinion, the ideal time for an unclear question to be closed is immediately.
It's just not hard to reopen a question. We do it all the time.
I think this is the most common view of closure across SE, but I'm not sure if we have a consensus about it on AU. I'm not sure we need a consensus (after all, you're never obligated to vote to close any particular question, and you can always click Skip in review) but you might consider posting on meta if you want to know what more people think. AFAIK, there's no significant opposition to closing questions immediately when they qualify for one or more of the available close reasons.
I'm trying to install Chirp, which is mainly designed to run on Ubuntu, but since I don't have a way to install it on my computer right now, I thought of using my Raspberry Pi. (Here are the directions I've been using.)[https://chirp.danplanet.com/projects/chirp/wiki/Running_Under_Linux]
One of ...
I currently have an Ubuntu installation, but I would like to switch to KDE Neon.
The problem that I have run into is that I don't know how to transfer ownership of my personal files (Pictures, Documents, etc.) from one installation to another.
All of my files are currently owned by my Ubuntu ac...
It's kind of strange when you see a mod answer a question that should be closed as dupe though. Makes you wonder if he was too much old hat and forgot to put his new hat on that day...
I don't know how to say good luck in spanish... So I'll say Bon Chance on the French SO
@WinEunuuchs2Unix Even more likely the mod simply didn't know. Although I have been known to post an answer that can help the OP adapt the dupe. For instance, I might know it's a dupe because I grok sed well enough to adapt the answer of the dupe to this question. So it's still a dupe, the basic info is there. But it won't be clear to a newbie, so maybe I'll post an answer and close.
But more often, if you've seen me doing this, I simply wasn't aware of the dupe.
I set on ubuntu server in vm :
address : 192.168.1.100
getway : 192.168.1.1
and I set in network adaptor's config :
NAT and port forwarng :
HOST IP : 127.0.0.1
GUEST IP : 192.168.1.100
how ssh to vm by my ubuntu host ?
I'd like to investigate when files in /tmp get removed. I run CentOS 7. Policy regarding deleting files from that directory is governed as follows:
RHEL7 and RedHat-like with systemd it's configured in
/usr/lib/tmpfiles.d/tmp.conf, called by systemd-tmpfiles-clean.service)
I guess that th...
Currently the box is running ubuntu 17.04. Since that version is no longer getting updates. I would like to upgrade it to 18.04. However i am a bit concerned that it might affect the php 5 installation from a custom ppa.
Has anyone done this and did not encounter any problems?
Thanks
I currently have an Ubuntu installation, but I would like to switch to KDE Neon.
The problem that I have run into is that I don't know how to transfer ownership of my personal files (Pictures, Documents, etc.) from one installation to another.
All of my files are currently owned by my Ubuntu ac...
