Hi I was just about to add the repository for installing systemback, and it has informed me it does not support my version of Ubuntu.
Is there something equivalent that I can install?
I was reading from this list and it has the at package listed as mandatory, and it wasn't present on my Ubuntu 18.04 LTS. Is this a Wikipedia typo or should I check that the iso file I installed from is valid?
I unfortunately in my naivety, destroyed my Ubuntu 18.04 LTS installation on my HP pavilion laptop in one line involving the "rm" command.
I can only access the GRUB command line by pressing F10 at start up, I have altered the BIOS settings to take precedence with booting from a USB, and saw this command while trying today:
sudo dd if="ubuntu-18.04-desktop-amd64.iso" of=/dev/sdX bs=8M
So my question is, will the GRUB command line terminal recognize this, and how can I first determine the location of the USB that I have put in with the .iso file?
I can't describe how grateful I would be here I have tried quite a lot of things, but I never imagined I could damage my OS so badly like this
I have noticed that a lot of files on my Linux OS have first lines that contain ^?ELF^A^A^A@^ or some variation, at the very least many contain ^?ELF.
What does ELF stand for and what is this type of encoding called?
I am using my Ubuntu LTS 18.04 to hotspot an internet connection to various other devices, but I would like this to be the default configuration, but when I restart the system I currently have to switch the hotspot on again each time.
How can I make the hotspot the default setting for my wifi device?
I have received a desktop notification stating that an application has stopped unexpectedly, am prompted to decide whether or not to send the details of this crash to the developers, which of course I will do, but I want to keep a .txt file of all of these details for me to look over later, learning the meaning of, improve my understanding of the Linux OS to put it in a general way.
It allows me to highlight particular detail fields, but ctrl+C does not copy the text to the clipboard, nor am I able to right click on it. If obtaining a text copy isn't possible, then I will just take screen shots but of course a .txt file will be much better.
Thanks in advance
How do I direct ( to a csv file for example) tabulated data for the amount of memory used with respect to run-time for a given command I have executed in the terminal?
Or another way to put it, does there exist a Linux package that pretty much the same as task manager in windows?
when entering the input:
sudo /usr/bin/vmplayer &
I receive the following error in my terminal's verbose output:
I/O warning: failed to load external entity "/etc/VMware/hostd/proxy.xml"
So my first question may seem pretty stupid but that's just my style now days, why is this file referred to as an "external" entity by my operating system's I/O?
And secondly, how do I determine how to format an xml file appropriately on a case by case basis?
I have been trying to use the cron package for scheduled bash script execution as is generally intended, and have found almost everything I need via this resource here
However the part I was unable to find, was the means for which I can set a beginning and end for a particular cron schedule to be conditional, ie I suppose I wanted a particular cron job to only be executed in march daily, and to then continue in april if say some binary variable (whose value is determined from some sort of assessment of the cron job's march output) is 1, and for the the cron job to be terminated until further notice if it's value is 0.
I apologise if my phrasing is unclear, constructive criticism is appreciated.
when i launch my bash script:
$ ./mybashscript.sh
How do I define variables with in it if i want to be able to append values for them in the execution of the above command? ie, how do i declare variables day,month and year in my .sh file if i were using it to record an entry,
$ ./EventDateLog.sh -day=17 -month=2 year=2019
I have a long list of usernames in /etc/passwd as well as my own user name. It says all of them have no login credentials except my user name and root, what is the purpose of these additional users on my system that I was previously unaware of?
I have used this command to successfully convert a .txt file to a .pcap file. However these were all for .txt files I obtained from the www,but when i attempted to use it for .txt files I had personally created on another program, it did create filename.pcap, but it is empty.
Does anyone have a better alternative?
Also in as much as I appreciate all the assistance here in code that achieves the result, if anyone can refer me to the wikipedia articles regarding the subject that is relevant as to why this occurs, thats really going to help me contextually understand how things work, where as just the code as helpful as I feel as it this is, will leave me none the wiser as far as how linux works. So I'm sure this will be considered a duplicate question, but I actually would really like to understand specifically this scenario, rather than be referred to another apt package.
Many thanks
sed 's/^[0-9:]*//' filename.txt | sed 's/^ //g' | sed 's/ .*$//g' | xxd -r -p > filename.pcap
Updated Edit:
The only consistent difference between the collection of txt files for which the above worked, and those I created, was that mine exclusively consist of numbers, one per line, 10 digits in length, where as the others contain everything else on the keyboard.
Don't know if that's any help, and yeah also I took a look at a pcap file in the text editor simply by changing it's extension to txt, and it appears they are encrypted with a cipher that utilizes many more characters beyond what is on the standard keyboard, so... yes it's pretty standard, not sure what I was expecting there.
When I enter the command:
$curl -basic https://www.google.com$
The output I receive is simply the text for the html page that we see when we visit the website.
but when I execute:
$curl -basic https://www.yahoo.com$
I receive no output, and the domain in my terminal changes from username@computer_name to Regional Redirectusername@computername.
What does this mean? I'm just not comfortable with that seeing I had thought what I was doing was sending a request to receive the text based content on the index page for a www domain. I apologize if this question is too vague, but I'd definitely like to know what the difference is here.
Thanks in advance
I have been playing around with the command:
$openssl passwd -crypt -salt
And I really need to see the actual code for which the crypt algorithm and the function for salting the user's input password prior to it's encryption.
Where or how do I view documentation relating to these codes and the code themselves?
Also I was wondering if there is a package that I can modify these definitions so I can discover how all the different flavours of spam are made
All resources i have come across say that this should work:
apt-get install libevent-dev
But this fails event even when I have super user privileges.
Does anyone know of a repository for this package?
My operating system is Ubuntu 18.04 LTS.
thanks in advance
Error output:
Reading package lists...Done
Building dependency tree...Done
Reading state information...Done
E: Unable to locate package libevent-dev
as the title states apt-get update is unable to access us archive repository, previously was not able to install anything from any four of the repositories, but this problem was resolved simply by rebooting my system, but I am having trouble installing vagrant at the moment, and the output cites things I am missing from the archive repository.
also note that for the vagrant install, I have already tried the recommendation in the output to append --fix-missing to the install command, and still no love, output reports the same problem.
I realise that this might be the same issue maybe involved and is very likely to be the DNS server as a user explained here Updating the apt-get command in the terminal In a previous question I asked, and for some reason my computer only has wifi issues when I follow the prompts from the software updater to download an update.
If this is too vague let me know and I will insert my terminal output into the question many thanks in advance :-)
I open my browser with the following command:
./start-tor-browser.desktop
But based on output received from executing another command, I want to basically append search engine addresses and search terms that is executed upon opening the browser. I think this could probably be done somehow by making additions to the command above, but again I really have no idea what I'm talking about here.
I attempted to use the following command in my terminal (Ubuntu 18.04)
ifconfig grep ether
and received the following output message:
SIOCSIFMTU: Operation not permitted
So I was going to ask why and what this means, but knowing me I will post a question for every line output I don't understand, everytime I am on my Linux system, and it wont be long before people here start to find me really annoying.
So what I am hoping for, is a command that I can call from within the terminal window that will return documentation relevant to the last line of output received, if this isn't possible then I will just have to search in my browser window, but because there are so many different ways to achieve the same result, and usually only one of them applies to the installation I am working from, it would save a lot of time if I could look up and display documentation relevant that is already on my local machine.
Addition:
I just thought of another means of potentially achieving the same result, I open the onion browser via the terminal, is there a means for which I can append a target http address and a list of search terms to be executed upon opening a new tab in my browser via the terminal, a portion of these search terms being the output that I need to information on?
ie a command that:
- opens a new tab on the browser I opened when I first opened the terminal
- inserts a target address for the search engine i wish to use
- when this search engine is ready to receive input, inserts search terms, which include the version of Ubuntu I am running, machine specifications, and the output i desire to learn more about, in this case, "SIOCSIFMTU: Operation not permitted".
I have only recently installed ubuntu 18.04 on one of my machines as a means of becoming competent in using a Linux system, when I attempt to use the command
sudo apt-get update
I receive an error message saying
Could not resolve 'security.ubuntu.com'
and likewise for all four of the main repositories. If it is necessary for me to print the exact output just let me know..
UPDATED:
I was able to update upon reboot of my system, however only partially, receiving the following error message in my output:
E: The repository 'http://security.ubuntu.com bionic-security Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.