List all symbolic links in a folder is very easy, this is how to find just the symlinks and not bother with any other files. This example shows how to use the find command to do this. 4.4 Tue Feb 04 jason@Yog-Sothoth 0: $ find . -type l ./boom ./chocolate-strife-setup…
Read MoreUsers that try and fail to log in to your system leave a record in the system logs. This is how to find out what time this was and which user they attempted to log in as. The /var/log/auth.log file is the one that contains the login records. All successful…
Read MoreRenaming folders is very easy. I have a folder with subdirectories named from 1 to 9. And I wish to rename them folder1 to folder9. This can be easily done with bash. This example will take care of this problem easily. 4.4 Fri Jan 31 jason@Yog-Sothoth 0: $ for i…
Read MoreAwk and bash are a very good combination for extracting certain text strings from a text file or the output of a program. Here I am extracting only the values that are surrounded by square brackets. 4.4 Mon Jan 27 jason@Yog-Sothoth 0: $ lspci | awk -vRS="]" -vFS="[" ‘{print $2}’…
Read MoreThis is a very useful .cshrc file for anyone out there that still uses UNIX. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35…
Read MoreBlocking unwanted websites with iptables can be done. This is not done via an Internet Protocol address, as this does not work. But matching strings does work. I have found out a way to do this. This sample below shows a few rules to block a website, if you try…
Read MoreVIM 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…
Read MoreWindows 8.1 at the moment is giving me a lot of problems. There is constant disk activity at 0.1 megabytes per second. This is very annoying, there are Windows services doing this, but it only recently started. T think it is better to use Linux instead, which does not have…
Read MoreThe 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,…
Read MoreThe new open-source OpenXray engine allows a gamer to run Call of Pripyat on Linux. This is how to install this very useful application. This comes as a PPA, just add the PPA to your system. 4.4 Thu Jan 16 jason@Yog-Sothoth 0: $ sudo add-apt-repository ppa:eagleivg/openxray4.4 Thu Jan 16 jason@Yog-Sothoth…
Read MoreThis command will only list the mounted removable drives on your Linux system. The ones under /dev/sd*. This is very easy to use. 4.4 Mon Jan 13 jason@Yog-Sothoth 0: $ cat /etc/mtab | grep /dev/s[a-f]/* /dev/sda2 /media/jason/Seagate\040Expansion\040Drive fuseblk rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096 0 0 /dev/sdb4 /media/jason/My\040Stuff fuseblk rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096 0 04.4 Mon Jan 13…
Read MoreIt is easy to get comprehensive information about a user on Linux by using the command line. I will show you how to see password expiry information and other details. This example shows the use of the chage command to retrieve password expiry information. 4.4 Mon Jan 13 jason@Yog-Sothoth 0:…
Read MoreThis PS1 example gives the user a pretend DOS shell prompt. This is very interesting and would be fun to play with for an experienced user, or to complete a Windows themed desktop environment like Cinnamon. That can be made to look just like Windows 10. And with this shell…
Read MoreLinux kernel 5.4 is very problematic, the installation of NVidia drivers is not working at all. I had to go back to 4.15-generic, as I could not get the drivers to build with the newer Linux kernel version. This is very annoying. The NVidia driver from the website can be…
Read MoreThe video hosting site Vimeo works the same as Youtube, it has separate files for video and audio that are put together to play an online video. This can be downloaded easily with a script. The youtube-dl script can download only the audio from a Youtube video, and it can…
Read MoreThumbnailing for the DirectDraw Surface file format is not supported in Linux with the Caja file manager, but this is easy to fix. The /usr/share/thumbnailers/ directory contains all of the thumbnailer files that automatically create thumbnails in the file manager for Caja. Just create a file named dds.thumbnailer and put…
Read MoreThis is a nice example in C. This will append text to a file whenever it is run. This is the proper way to do this in this programming language. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 #include <stdlib.h> #include <stdio.h> int…
Read MoreThere are many very useful shell tricks when using the bash shell on Linux or UNIX. Print the last used command-line arguments with a keyboard shortcut. ESC-. This will print the last used command-line arguments to the prompt. Very useful if it is a very long one-liner. Print a listing…
Read MoreHow to unpack and use Mac OSX fonts on Linux. This is easy.
Read MoreThere are various tricks for programming on Linux. One useful trick is to open a file for reading with C. This is how to do this. The “r” option for fopen() will read the file into memory. #include <stdlib.h> #include <stdio.h> int main(void) { FILE *f; char buf[256]; …
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