This interesting bash function will get the git branch of the current working directory and then print it in the shell prompt. This could be very useful for a programmer. git_branch() { git branch 2> /dev/null | sed -e ‘/^[^*]/d’ -e ‘s/* \(.*\)/(\1)/’ } PS1=’┌──[\u@\h]─[\w]\n└──╼ $(git_branch) ╼ \$ ‘git_branch() { git branch 2> /dev/null … Read more
The Linux command line is very useful and it can even generate you a nice wallpaper image using just the shell and ImageMagick. The example below will generate a 3440×1440 pixels wallpaper image using just the random data from /dev/urandom. ┌─[jason@jason-desktop]─[~/Documents] └──╼ $mx=320;my=256;head -c "$((3*mx*my))" /dev/urandom | convert -depth 8 -size "${mx}x${my}" -resize 3440×1440\! -channel … Read more
The updates for youtube-dl do not work anymore on Ubuntu, but it can be updated manually. Download the script here: https://youtube-dl.org/downloads/latest/youtube-dl. Then copy the script over the top of the existing one in /usr/bin and then make sure it has the executable flags 755. This is very easy. Download it very easily. ┌─[jason@jason-desktop]─[~/Downloads] └──╼ $wget … Read more
To read a file from the Internet using wget and print it in the terminal, use this command. ┌─[jason@jason-desktop]─[~/Documents] └──╼ $wget -qO – https://i.mjh.nz/au/Brisbane/raw-tv.m3u8┌─[jason@jason-desktop]─[~/Documents] └──╼ $wget -qO – https://i.mjh.nz/au/Brisbane/raw-tv.m3u8 View an image from the Internet with wget and the ImageMagik display utility. ┌─[jason@jason-desktop]─[~/Documents] └──╼ $wget -qO – https://i.4cdn.org/g/1603231784644.png | display┌─[jason@jason-desktop]─[~/Documents] └──╼ $wget -qO – https://i.4cdn.org/g/1603231784644.png … Read more
The ffmpeg utility is very useful for transcoding video and making video files, but it can also retrieve information from a video or audio file very easily. You can get the ID3 info from an mp3 very easily. Below is an example. I am getting album and artist information from an mp3 audio file. jason@jason-desktop:~/Music/Ludwig … Read more
This simple shell script will pick a random sentence from a text file. This is made up of multiple sentences from parts of the text file merged into one long sentence. words.sh1 2 3 4 5 #!/bin/sh numwords=$(shuf -i 14-88 -n 1) words=$(shuf -n $numwords 122-0.txt | cut -d$” -f2) echo -n $words ; … 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
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
Getting 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 $1}’ 3440x1440jason@jason-desktop:~/Videos$ xrandr | awk ‘{if(NR==5) … Read more
Some very useful bash shell tips for using the Linux shell in 2022. These are the best way to use the shell quickly and efficiently.
Getting information about your CPU on Linux is very easy. There are many ways to do this. The cpufreq app is one good way to get the current CPU frequency. 4.4 Thu Jun 04 jason@Yog-Sothoth 0: $ cpufreq-info -f -m 988 MHz4.4 Thu Jun 04 jason@Yog-Sothoth 0: $ cpufreq-info -f -m 988 MHz This command … Read more
Setting themes for the Ubuntu MATE desktop is very easy, but it can be done with the command line. This is very simple to do. The command below will set the GTK theme as “Bluebird”. This works instantly and would be very useful in a script to quickly set up a Linux desktop just as … Read more
This one-liner will print a listing of all ABC News articles from the XML RSS feed. This is a very good way to extract text from an RSS feed or other XML files. curl -s http://www.abc.net.au/news/feed/2942460/rss.xml | grep ‘media:description’ | awk -F "[<>]" ‘{print $3}’; echo "$desc"curl -s http://www.abc.net.au/news/feed/2942460/rss.xml | grep ‘media:description’ | awk -F … Read more
There are some tips for Ubuntu that are not as well known as they should be. One tip is searching the bash history. Press Control-R and a prompt will appear. (reverse-i-search)`sudo’: sudo apt-get install libxml2-utils(reverse-i-search)`sudo’: sudo apt-get install libxml2-utils Type a search like “sudo” for example, and the first search result will cope up, this … Read more
I have found a very nice trick to switch back and forth between directories in Linux. This is very useful if the user needs to do something in one directory and then switch back to the previous directory to do something else. Below is a very useful example. I cd from ~ to the Documents … Read more
Very nice bash shell prompt This is a very useful Linux shell prompt with color. export PS1="\[\033[38;5;165m\]\d\[$(tput sgr0)\] \[$(tput sgr0)\]\[\033[38;5;51m\]\W\[$(tput sgr0)\] \[$(tput sgr0)\]\[\033[38;5;84m\]\H\[$(tput sgr0)\]@\[$(tput sgr0)\]\[\033[38;5;229m\]\u\[$(tput sgr0)\]:\l>\[$(tput sgr0)\]\[\033[38;5;231m\]\\$\[$(tput sgr0)\] "export PS1="\[\033[38;5;165m\]\d\[$(tput sgr0)\] \[$(tput sgr0)\]\[\033[38;5;51m\]\W\[$(tput sgr0)\] \[$(tput sgr0)\]\[\033[38;5;84m\]\H\[$(tput sgr0)\]@\[$(tput sgr0)\]\[\033[38;5;229m\]\u\[$(tput sgr0)\]:\l>\[$(tput sgr0)\]\[\033[38;5;231m\]\\$\[$(tput sgr0)\] " This prompt will look like this. Mon Mar 30 ~ Yog-Sothoth@jason:0>$ This is … Read more
How to print the amount of RAM in your machine as a whole number.
The settings used by the file chooser in MATE or Gnome can be changed easily with the command line. The gsettings utility makes this easy. This example will alter the Firefox file chooser, it will have directories listed first, in descending order, sorted by date modified. gsettings set org.gtk.Settings.FileChooser sort-column ‘modified’ gsettings set org.gtk.Settings.FileChooser sort-order … Read more
VIM is a very useful and versatile editor for Linux. This is how to use it to its full potential. Some great VIM tricks to help for a Linux user or programmer. To read the output of a command into a text file, use the :r command in the command mode, and then a Linux … Read more
The Bandcamp website hosts a lot of music, and it is very easy to download music from the website easily on Linux. Firstly, install the Python pip3 addon. 4.4 Sat Jan 18 jason@Yog-Sothoth 0: $ sudo apt install python3-pip4.4 Sat Jan 18 jason@Yog-Sothoth 0: $ sudo apt install python3-pip Then, install the Python Bandcamp script. … Read more