The Ubuntu Unity desktop environment is very annoying compared to the MATE alternative. I keep getting notifications that an app has stopped working, like Redshift, and then it loads it up again and it is running twice. Why does this even happen? With the MATE desktop environment, it is very…
Read MoreCreating 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]]─[~]…
Read MoreThis command will change the default port for the SSH server on your Linux machine. jason@jason-desktop:~$ perl -pi -e ‘s/^#?Port 22$/Port 443/’ /etc/ssh/sshd_configjason@jason-desktop:~$ perl -pi -e ‘s/^#?Port 22$/Port 443/’ /etc/ssh/sshd_config Then run this command to restart the SSH server. jason@jason-desktop:~$ sudo service ssh restartjason@jason-desktop:~$ sudo service ssh restart This will…
Read MoreThe 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…
Read MoreMerging a subtitle *.srt file to a move on Linux is very easy. Just download a suitable srt file from the Internet, then put it in the same directory as the TV show or movie you have. Then do this to merge the two. 1 2 3 4 5 6…
Read MoreIt is possible with MPV to play a playlist, which is a list of URL`s one on each line, and this will be played in order by MPV. This is very easy to do. Make a playlist in VIM. This example works just fine. You do not need any special…
Read MoreSome text files are shipped as comma-delimited files. This can be annoying to fix, but it can be done with the Linux command line. Here is an example of comma-delimited text. jason@jason-desktop:~/Documents$ cat banlist.txt | head -c 200 ; echo 10.34.28.4, 103.11.70.143, 103.11.70.143, 103.22.245.6, 107.20.178.108, 108.163.248.74, 108.21.102.146, 108.62.110.25, 108.62.33.114, 108.62.33.114,…
Read MoreThis simple shell script will pick a random sentence from a text file. This is made up of multiple sentences from parts of the text file merged into one long sentence. words.sh1 2 3 4 5 #!/bin/sh numwords=$(shuf -i 14-88 -n 1) words=$(shuf -n $numwords 122-0.txt | cut -d$”…
Read MoreRed 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…
Read MoreThe 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….
Read MorePut 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 $include /etc/inputrc set completion-ignore-case on set completion-query-items -1 set show-all-if-unmodified on set show-all-if-ambiguous off set colored-completion-prefix on set colored-stats on set visible-stats on "\C-j":…
Read MoreOpening and reading chm files on Linux is very easy, they are compressed archives and can be opened with 7zip. This is how to extract a chm file on Linux with 7zip. Then open the index.html file in Firefox to view the contents easily. jason@jason-desktop:~/Documents/kabylakeplatform_3_7_9/KabylakePlatSamplePkg/Docs$ 7z x PlatApi.chm 7-Zip [64]…
Read MoreCracking a pin number is very easy when you are using Linux. There are utilities to generate a wordlist and then this may be used to crack the pin number hash. This is how to generate a wordlist with all possible number combinations using the numbers 249. jason@jason-desktop:~$ crunch 16…
Read MoreThe many Linux distributions out there are very interesting in how they work. The passwords for the users are stored in a file in /etc/shadow. This is only readable by the system administrator account and are encrypted with different levels of encryption. This example is using the outdated MD5 encryption…
Read MoreGetting information about your desktop resolution with the Linux command line is very easy to do. This one-liner will print the current desktop resolution. This could be used in a script that will then do something with the output. jason@jason-desktop:~/Videos$ xrandr | awk ‘{if(NR==5) print $0}’ | awk ‘{print $1}’…
Read MoreGetting information about a video file on Linux with the command line is very easy. I will show how you can easily find the resolution of a video and the format. This example below will return the resolution of a video file. jason@jason-desktop:~/Videos$ ffprobe XR_3DA_2019_03_16_19_22_35_777.avi 2>&1 | grep -E ‘[[:digit:]]{3,}x[[:digit:]]{3,}’…
Read MoreIt is possible to detect an established SSH connection from your machine to a remote server. The lsof command can view an SSH connection. I am using SSH over port 443, so the connection is mixed up with a lot of other stuff that Firefox is connected to. But if…
Read MoreThe sound volume in Ubuntu 20.04 is low by default. To adjust the volume there is a neat trick. Run alsamixer in the terminal and press F6 to select your sound hardware. Then adjust the volume to suit. Do not set it too high as you will get clipping. Just…
Read MoreThe nmap utility is very useful for scanning remote systems to find open ports and services that are running that could be used to gain access to the computer. If the Operating System fingerprint is unknown to Nmap and you yourself know what it is, then the fingerprint may be…
Read MoreThis useful one-liner will get your IP address from the command line very easily. This uses Google services and works very well. 4.4 Tue Jun 30 jason@Yog-Sothoth 0: $ dig TXT +short o-o.myaddr.l.google.com @ns1.google.com | sed -e ‘s/^"//’ -e ‘s/"$//’ 209.134.104.2004.4 Tue Jun 30 jason@Yog-Sothoth 0: $ dig TXT +short…
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