Useful Linux CLI commands

Some of these are pretty basic and some are a bit more advanced and/or obscure in my opinion. I hope they are also useful to others out there. Please not that files names and file paths are just made up examples and might not fit what you are attempting to accomplish.

  • cd – change directory
  • Carl + c – cancels the currently running foreground operation
  • pod – s/how your current fill file path
  • cp /path/to/file.txt /path/to/your/new/file.txt – copy a file from one location to another location
  • move (rename) a file from one location to another location – mv file1.txt file1.back.txt
  • show the tail end of a file with any new additions that are written to the file – tail -f /var/log/messages.log
  • determine if a node is online – ping duck.com
  • determine the network route to a given node – trace route duck.com
  • perform a DNS lookup on a given address – nslookup duck.com
  •  show xx number of lines at the tail end of a file – Show the tail end of a file with any additions – tail -f /var/log/messages
  • run a shell script – bash shellscript.sh OR sh shellscript.sh
  • check drive mappings for the currently mounted file system – do -h
  • change to another system user – su username
  • easy way to change to the root user if you have sudo level access – sudo -i
Views: 3

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    Recently WordPress has updated their WYSIWYG editor to Gutenberg which is absolutely fantastic!  The only issue thus far is that when editing or updating a post within WordPress you see is the following.

    This prevents the auto save and publish functions from working.  WordPress and Cloudflare are working on the issue and have a workaround in place.   The fix involves disabling two rules in the WordPress rules set in the Web Application Firewall settings in your Cloudflare account.

    1. Once you are logged in click on the domain that you need to edit.
    2. Click on Firewall from the top menu.
    3. Scroll down to the section titled IP Firewall Button.
      1. Click the button to the left titled Web Application Firewall.
    4. Look for the section titled Package: Cloudflare Rule Set.
      1. Click Rule Details.
    5. Scroll down to the section titled Cloudflare WordPress and click the link.
    6. Click on page 4 from the pagination at the bottom of the section.
    7. Look for the rules WP0025A and WP0025A.
    8. On the far right side of the section under the Mode heading you will see a drop down list.
    9. Choose disable for both rules.
    10. You should see a green par across the bottom of the screen indicating that the settings are saved.
    11. Click the Close button.
    12. Go back to your WordPress Admin area and try to edit a post.

    Unfortunately this workaround has never worked for me even after Gutenberg was updated and Cloudflare pushed out patches on their end.  As a last resort I had to whitelist my IP from the Firewall Events section of the Firewall page.

    Now I am once again able to edit posts and whatnot in WordPress!

    Views: 12
  • Auto update your brew casks and formulas

    If you use the popular Homebrew package manager on MacOS you are very familar with running something similar to this command on a regular basis.

    brew update && brew upgrade && brew cleanup

    this type of command informs Homebrew to update it’s list of package versions, locate any that need to be updated, and clean up any left over files generated by there processes. If you remember to run this all the time then it is a pretty quick command, but if like me, you forget to do this for weeks or months at a time it can start to take quite some time to finish it’s maintenance.

    Yesterday, I was looking into ways to automate this process through adding the command to Cron or to have Cron run a shell script or apple script file with the commands in it. After some quick searching on my search engine of choice, Kagi, I found a great Github project called Homebrew Autoupdate.

    The project describes itself thusly.

    An easy, convenient way to automatically update Homebrew.

    This script will run brew update in the background once every 24 hours (by default) until explicitly told to stop, utilising launchd.

    brew upgrade and brew cleanup can also be handled automatically, but are optional flags.

    Notifications are enabled by default using a new, code-signed, universal AppleScript applet.

    https://github.com/DomT4/homebrew-autoupdate

    If you decide to install this project every morning you can look forward to notifications like this.

    Screenshot 2024 07 14 At 8.44.13 am

    Do you already use this project? If you tried it, what did you think? Hit me up on Mastodon or my Contact page so we can discuss it or you can ask me any questions you might have.

    Views: 59
  • How to correct a WSL VM so that it can use a VPN

    This is a really weird edge case that I came across at work. After an update to Windows subsystem for Linux (WSL) I was no longer able to use my Cisco AnyConnect VPN connection to connect to any of the infrastructure I manage.

    WSL (112) ERROR: CreateProcessParseCommon:782: Failed to translate

    Currently, the only method that I have to use a WSL Virtual Machine (VM) is to use this great third party script so that my VM knows how to actually use a network. I do with Microsoft had an easier way to do this, WSL has no network connectivity once connected to a VPN. 🤦🏻‍♂️

    At any rate, all of these weird tech issues aside with how I choose to SSH into the systems I manage at work, this is how you correct the error WSL (112) ERROR: CreateProcessParseCommon:782: Failed to translate when attempting to use a WSL VM on a VPN Connection. You will need to edit the .profile folder in your home directory (/home/your_userneame_here) and add the following line to the end of the file.

    wsl.exe -d wsl-vpnkit --cd /app service wsl-vpnkit start

    To apply the fix, power cycle your WSL VM with your method of choice. I hope this helps and same you time having to search all over the Internet or watch a Youtube “tutorial” what wastes your time. If you have any questions, etc. hit me up via one of the methods on my contact page. Thanks for stopping by! 🙂

    Views: 14
  • How to Find Out What Version of Linux You Are Running

    ---------- On Red Hat Linux ---------- 
    $ cat /etc/redhat-release
    
    ---------- On CentOS Linux ---------- 
    $ cat /etc/centos-release
    
    ---------- On Fedora Linux ---------- 
    $ cat /etc/fedora-release
    
    ---------- On Debian Linux ---------- 
    $ cat /etc/debian_version
    
    ---------- On Ubuntu and Linux Mint ---------- 
    $ cat /etc/lsb-release
    
    ---------- On Gentoo Linux ---------- 
    $ cat /etc/gentoo-release
    
    ---------- On SuSE Linux ---------- 
    $ cat /etc/SuSE-release

    AS you can see this various depending on on which form of the original Linux Operating System so I usually end up searching for this as it is not something that I use day to day in my professional or work life. I hope it makes somees’s day that much easier. 🙂

    Views: 6
  • Recreating discontinued menu items from Cracker Barrel

    My family dines at this restaurant semi regularly and sometime during the COVID “end times” the chain discontinued two of our favorite breakfast items, the Uncle Herschel’s Favorite and the Sunrise Sampler. The staff of course does not know why menu items are changed as this is a decision made at the corporate level so there is no point in complaining to them about the missing items. I did find a thread on the Cracker Barrel Subreddit (yes that is a thing) where I was able to recreate my personal favorite, the Uncle Herschel’s Favorite and my Brother found a random review on Trip Advisor that provided his favorite, the Sunrise Sampler. In the off chance that someone else is wanting to dine on these two lost menu items I thought that providing the workaround we discovered might be helpful to others out there.

    The Uncle Herschel’s Favorate (modified)

    • Two Eggs (scrambled with cheese)
    • Grits
    • Farm-Raised Catfish
    • Fried eggs
    • Biscuits & Gravy

    In order to recreate this item on today’s menu you will need to choose the Build Your Own Homestyle Breakfast option from the menu. Fortunately, this comes with Biscuits & Gravy and two eggs already! For myself I would ask to have them scrambled with cheese but you choose your eggs however you wish. Now we will need to make the following selections:

    • Choose catfish as the meat (grilled).
    • Choose fried apples as the side.
    • Add gets as an additional side.

    If you are not a catfish fan you can choose whatever other meat option that you wish.

    The Sunrise Sampler

    • Two eggs (scrambled with cheese)
    • Grits
    • Fried Apples
    • Hashbrown Casserole
    • Meat sampler (Bacon, Sausage, and Country Ham)
    • Biscuits & Gravy

    Much like the prior item you will need to choose the Build Your Own Homestyle Breakfast option from the menu. Fortunately, this will come with Biscuits & Gravy and two eggs already! My Brother would also ask to have them scrambled with cheese but you choose your eggs however you wish. Now we will need to make the following selections:

    • Choose meat sampler as the meat.
    • Choose fried apples as the side.
    • Add hash brown casserole as an additional side.
    • Add grits as an additional side.

    This is as close to the original items as we have been able to determine. Unfortunately, these now cost more than the original items but it replicates everything else that you want from Breakfast! Feel free to contact me on Mastodon if you know of a cheaper way to do this or lament other list menu items from this Midwestern stable!

    Views: 23
  • Enabling Apple Intelligence on macOS 15.1 (Sequoia) Developer Beta

    I have spent the last week or so being very confused on how to enable the macOS 15.1 Beta onto my M2 MacBook Air. I finally stumbled across the method and it made sense once I found it but it was not very intuitive. There are now two separate macOS 15 beta channels and you will need to open System Settings and navigate to General > Software update > Beta Updates. You will need to choose macOS Sequoia 15.1 Developer beta by clicking on the i symbol to the right.

    Dialog box for Beta Updates on macOS, showing a dropdown menu with options: “Off,” “macOS Sequoia 15.1 Developer Beta” (selected), “macOS Sequoia Public Beta,” and “macOS Sequoia Developer Beta.” Below, an Apple Account is listed with the email “gatewayy@gatewayy.net.” There is a “Done” button.

    Once you have selected the new beta channel you Mac should download the update and install it. Once you have installed the update and logged back in you will not immediately have the limited set of Apple Intelligence features. Apple has made them opt-in in order to not bog down their new Private Cloud Compute infrastructure that they are building out. To join the waitlist you will need to open System Settings once again and navigate to the Siri section there is a new Apple Intelligence & Siri section. You will need to select the Join Apple Intelligence Waitlist… button to proceed.

    Siri settings page featuring “Apple Intelligence & Siri” with a beta label, described as a personal intelligence system integrated into Mac, apps, and Siri. A “Join Apple Intelligence Waitlist…” button is present, with a note below about reserving a spot to experience personalized intelligence.

    Get past the marketing dialog.

    Apple Intelligence setup screen with a beta label. Features listed include “New Ways to Express Yourself,” “The Start of a New Era for Siri,” and “Built for Privacy.” There are “Not Now” and “Continue” buttons at the bottom. A link for “About Apple Intelligence & Privacy…” is also present.

    You are now on the waitlist and you should see a preparing dialog.

    Siri settings page showing “Apple Intelligence & Siri” with a beta label. Description states it is a personal intelligence system integrated into Mac, apps, and Siri. “Apple Intelligence” status is “Preparing.” A note below indicates users will be notified when it becomes available for their Mac.

    It took around fifteen minutes for this to happen and you should see the dialog change to enable Apple Intelligence and you should see a notification informing you that the feature is ready to be enabled. I am assuming that somewhere behind the scenes something regarding Apple’s Private Cloud Compute is being created for your device.

    Now, you will see a few short dialogs giving you a brief overview of the current Apple Intelligence features.

    You are now up and running with Apple Intelligence. It is very much early days and only a very small set of features are available with more to come in the next few months.

    Views: 2