There are many ways to get detailed information on known users on your Linux system. The lslogins command is therefore very useful for listing all usable login accounts. The below example will list all user accounts including the root account. This might be disabled on an Ubuntu system, but it is worth listing it anyway. … Read more
Common Open Research Emulator is a very good networking emulator for Linux machines. This allows a user to create a network layout with IP addresses and see it working. This is very interesting software. Download the source code from Github. ┌─[jason@jason-desktop]─[~/Documents/core] └──╼ $git clone https://github.com/coreemu/core.git┌─[jason@jason-desktop]─[~/Documents/core] └──╼ $git clone https://github.com/coreemu/core.git Then begin the installation like this. … Read more
Recording sound from your computer to a file is pretty easy with Pulseaudio. Assuming you know what device you are using to listen to audio, then it may be selected and recorded from. Use this command to find the device name. ~$ pacmd list-sources~$ pacmd list-sources Then you may get the device string. alsa_output.usb-Cosair_Corsair_VOID_PRO_Surround_USB_Adapter_00000000-00.analog-stereo.monitoralsa_output.usb-Cosair_Corsair_VOID_PRO_Surround_USB_Adapter_00000000-00.analog-stereo.monitor Make … Read more
The Linux user account is a way for users to log in to their system and perform various tasks. This is just as it was in UNIX. The /etc/passwd file stores all user accounts and information about that user. The /home directory, the username and user ID #. /etc/passwd1 2 3 4 5 6 7 … Read more
There is a nice alternative to Windirstat for Linux available. The Graphical Disk Map utility for Linux allows a user to open a folder in the program and then see which files are taking up the most space. This is a great way to clean up your hard drive and save disk space. Install it … Read more
The ClamAV virus scanner is very useful for scanning files for malicious code. This is good if you download files from the Internet that are going to be used on a Windows computer. This is very easy to install. ┌─[jason@jason-desktop]─[~/Downloads/Dark Path/S.T.A.L.K.E.R. – Dark Path] └──╼ $sudo apt install clamav┌─[jason@jason-desktop]─[~/Downloads/Dark Path/S.T.A.L.K.E.R. – Dark Path] └──╼ $sudo … Read more
To get a nice warm screen color instead of a glaring white screen at night, use this very useful program. Redshift will remove blue light from your computer screen and then this will help with sleep. ┌─[jason@jason-desktop]─[/] └──╼ $sudo apt install redshift-gtk┌─[jason@jason-desktop]─[/] └──╼ $sudo apt install redshift-gtk Start Redshift from the Applications-Accessories menu and then … Read more
Creating a webcam stream of your desktop, instead of an actual webcam is very easy on Linux. The v412loopback package provides a kernel module that will emulate a webcam, using any video input you wish to give it. Install it like this. ┌──[[email protected]]─[~] └──╼ ╼ $ sudo apt install v4l2loopback-dkms┌──[[email protected]]─[~] └──╼ ╼ $ sudo apt … Read more
There is a very good font out now, this can filter racist words automatically. This can be used as an interface font with your Gnome or MATE desktop or with your browser, and triggering words will be automatically filtered by the font. This is amazing. It could be used on a website, it works fine … Read more
This is how to get information about recently installed packages on Ubuntu. This is looking at the lowlatency package I just installed. 4.4 Thu Jun 04 jason@Yog-Sothoth 0: $ grep "lowlatency" /var/log/apt/history.log | sed "s/ /\n/gi"; Commandline: apt install linux-image-5.3.0-24-lowlatency Install: linux-image-5.3.0-24-lowlatency:amd64 (5.3.0-24.26~18.04.2), linux-modules-5.3.0-24-lowlatency:amd64 (5.3.0-24.26~18.04.2, automatic) Commandline: apt-get install –reinstall linux-image-5.3.0-24-lowlatency Reinstall: linux-image-5.3.0-24-lowlatency:amd64 (5.3.0-24.26~18.04.2) Commandline: … Read more
Setting up a bash shell is a lot of fun, there are a lot of ways to configure the bash shell to work just the way you wish it to. Using Linux makes this very easy. The bash shell has a few files that help it perform various functions. The .bash_logout file executes when the … Read more
The ffmpeg utility is very useful for transcoding video and making video files, but it can also retrieve information from a video or audio file very easily. You can get the ID3 info from an mp3 very easily. Below is an example. I am getting album and artist information from an mp3 audio file. jason@jason-desktop:~/Music/Ludwig … Read more
The Systemd framework in Ubuntu may be used to get good information about running services on your machine. This is very easy. To list all active services on your Ubuntu machine, use this command. jason@jason-desktop:~/Videos$ systemctl list-units –type=service –state=activejason@jason-desktop:~/Videos$ systemctl list-units –type=service –state=active Or this command which is a fast way to list all running … Read more
Mounting an old LVM volume on Ubuntu 20.04, is very easy, there are numerous posts on Stackoverflow that have many complicated commands for mounting a drive using the command line. But I needed to mount an old Ubuntu installation and it was an LVM2 volume, so I could not get it to mount on Ubuntu … Read more
Red Hat Linux used the Red Hat Package Manager format to package various files and programs. But this can be opened very easily on Ubuntu. The rpm2archive utility will convert these files into a *.tgz file. This may then be easily extracted on Linux. Use this utility to convert a Red Hat RPM to a … Read more
The default CPU governor on an Ubuntu machine sets it to use an ondemand CPU setting that will use the lowest CPU speed and then set it higher when it is needed, but it does not always work very well. But it can be fixed. Dsiable the ondemand CPU governor. ┌─[jason@darkstar]─[~] └──╼ $echo ‘GOVERNOR="performance"’ | … Read more
The XPS document format is used by Windows to save a document when the document writer is used. The document reader in Ubuntu can open these just fine, but I wanted to be able to convert one to a PDF document. This is how I did it with the command line. Install the libgxps-utils package … Read more
There are many Linux distributions that are good alternatives to Ubuntu. This gives you more freedom of choice. Debian Live distribution. This is a nice way to try out some Debian goodness before installing on your system. Find some download links here: https://www.debian.org/CD/live/. Ubuntu is based on Debian anyway, so running the original distro should … Read more
Put this code in your ~/.inputrc file to enable nice auto-completion in the bash shell prompt. ~\.inputrc1 2 3 4 5 6 7 8 9 10 $include /etc/inputrc set completion-ignore-case on set completion-query-items -1 set show-all-if-unmodified on set show-all-if-ambiguous off set colored-completion-prefix on set colored-stats on set visible-stats on "\C-j": menu-complete "\C-k": menu-complete-backward$include /etc/inputrc set … Read more
Opening and reading chm files on Linux is very easy, they are compressed archives and can be opened with 7zip. This is how to extract a chm file on Linux with 7zip. Then open the index.html file in Firefox to view the contents easily. jason@jason-desktop:~/Documents/kabylakeplatform_3_7_9/KabylakePlatSamplePkg/Docs$ 7z x PlatApi.chm 7-Zip [64] 16.02 : Copyright (c) 1999-2016 … Read more