Author Archives: dsg_admin

Using grep to search a file using multiple words as boolean AND OR condition

Posted on September 10, 2024 by dsg_admin
Posted in Command Line FU, Linux, Uncategorized | Comments Off on Using grep to search a file using multiple words as boolean AND OR condition

Use sed to replace last character after matching a line

Posted on May 14, 2024 by dsg_admin

If you are a coder like me we tend to discover after we have made a script that we need to change something on multiple lines. Recently I have a script whereby added a “log_message” function which would echo a … Continue reading →

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Viewing contents of an open filehandle on a deleted file

Posted on May 1, 2024 by dsg_admin

There are times when you may unintentionally delete a file which is being written to. When this occurs it will leave an Open Filehandle. In Linux open filehandles may be viewed via the ‘lsof’ command. # lsof +L1 In the … Continue reading →

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MACOS – Clicking on webpage automatically jumps to top of the page

Posted on February 21, 2024 by dsg_admin

I recently encountered yet another MAC Madness issue! I changed out my wired MacBook extended keyboard for a used Apple ‘Magic’ Keyboard. Well the ‘magic’ was that it introduced an unwanted ‘feature’ whereby when I switch between external monitors, and … Continue reading →

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Cscope search results are invisible

Posted on February 13, 2024 by dsg_admin

Part of my ‘day job’ is trolling thru source code when looking for answers. My preferred mechanism, other than a recursive grep, is to use cscope Cscope is a useful tool for searching a source code tree after you build … Continue reading →

Posted in Command Line FU, Linux | Leave a comment

What every Programmer *should* know about Memory

Posted on October 4, 2023 by dsg_admin

For my fellow Insomniacs out there… If you are up scrolling your phone for things around the Google-verse to read to shut off your brain so you can possibly go to sleep.. I came across this article on LWN which … Continue reading →

Posted in Internals, Linux | Leave a comment

Obtain the grub boot parameters from /var/log/messages

Posted on September 20, 2023 by dsg_admin

There are times you may need to quickly confirm the grub boot parameters that were issued either at the console (or by default) This information is logged to /var/log/messages when you grep with keywords “Kernel command”

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Data Storage Funny #1

Posted on September 20, 2023 by dsg_admin

Let this sink in!!

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Display ethernet devices on a Fedora system using the Linux Pseudo Filesystem and create a static IP Address

Posted on September 11, 2023 by dsg_admin

Encountered a fun riddle recently whereby on a Fedora 34 system I needed to locate all ethernet interfaces on a system that are obtaining a DHCP address, then after the first reboot create a static IP address. I am a … Continue reading →

Posted in Command Line FU, Linux, Networking | Tagged , , | Leave a comment

Modify gnome dock from the command line

Posted on September 8, 2023 by dsg_admin

To modify the gnome desktop dock (i.e. launcher or launchpad) from the command line an easy way is to perform the following: This above will add Firefox, The File Manager, Terminal, Terminator and Gnome Settings to the desktop

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