Ken's Lotto Syndicate

add_a_timeout

Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00

Add a timeout to scripts The other day at work we had a Bash script that would set up a web server and wait for it to be up before proceeding to the next things. The script worked fine and we had no issues, until we had an infinite loop. We were using the Bash built-in until to check if the web server was up:

bash_one-liners

Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00

bash one-liners To remove everything after and including the final '.' use: ${var%.*} To remove the last 4 characters from 'string', use: new_string=${string::-4} sed Substitute any of listed characters with one command sed s'/[":=]/ /g'

bash

Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00

Linux bash/shell scripting Commands: Syntax and examples help comm - Compare 2 files grep wget tar date sed path How to Get the installed version [RHEL] How to version lock a package/s [RHEL] Install/Remove the DNF version lock plugin [RHEL] Compare bash arrays Determine if a number odd or even Incrementing & Decrementing bash variables Add a timeout to scripts Get the last n characters from variable shell redirection Functions Function to determine the boot type (UEFI…

comm

Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00

comm command in Linux with examples The ‘comm’ command in Linux is a powerful utility that allows you to compare two sorted files line by line, identifying the lines that are unique to each file and those that are common to both. This command is particularly useful when you have lists, logs, or data sets that need to be compared efficiently. Here, we will explore the syntax, usage, options, and examples of the ‘comm’ command. What is the ‘comm’ Command?

compare_bash_arrays

Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00

How to Find the Difference Between Two Arrays in Bash When working with arrays in Bash scripting, one of the common tasks you might encounter is finding the difference between two arrays. This operation is essentially about identifying elements that are unique to each array when compared against the other.

date

Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00

date Convert epoch time to human readable date date -d @1234567890

debian_based

Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00

Sharing files between Linux and Windows systems can sometimes feel like navigating a maze—but it doesn't have to be. With Samba, a powerful and flexible open-source implementation of the SMB/CIFS protocol, you can easily turn your Ubuntu machine into a file-sharing server that plays nicely with Windows, macOS, and other Linux machines.

error_messages

Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00

How to write error messages that actually help users rather than frustrate them Published: 17 April 2025 Written by: Amy Hupe One of the most consistently neglected parts of today’s user experiences is our handling of errors. We’re so busy designing the happy paths through our products that we often forget to give the same care and attention to the times when things will go wrong.

facebook

Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00

The ideal size for a Facebook profile picture is 320 x 320 pixels. Facebook will display the profile picture as a circle, so it's recommended to center key details within the image. While 320×320 is the recommended size for best quality, Facebook will also accept larger images, but they should not be smaller than this

faq

Anonymous (anonymous@undisclosed.example.com) — 2026-07-09T06:23:47+00:00

FREQUENTLY ASKED QUESTIONS Q: How do I know when a syndicate is open, and the syndicates details? A: The organise/s will send you an email with a link, and other details, such as available credits. ---------- Q: Why do you only accept PayPal? A: Four reasons:

get_boot_type

Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00

bash function to determine the boot type (on RHEL systems) function fn_get_boot_type() { #--- Determine the boot type (UEFI or BIOS). This is used for manifest automation LOG_MSG="Checking for boot type" fn_write_to_log BOOT_TYPE=$([ -d /sys/firmware/efi ] && echo UEFI || echo BIOS) LOG_MSG="Boot Type: ${BOOT_TYPE}" fn_write_to_log }

get_last_n_chars

Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00

Get the last n characters from a bash variable To extract the last 'n' characters from a string in Bash, the most common and efficient method is using string slicing with a negative offset. Using String Slicing: string="This is a sample string" n=5 # Number of last characters to extract last_n_chars="${string: -$n}" echo "$last_n_chars"

get_rhel_version

Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00

google_sheets

Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00

QUERY to Find Nth Occurrence in Google Sheets To find the second occurrence of “Mango” in column A and get the corresponding value from column B, you can use the following QUERY formula: =QUERY(A1:B, "SELECT B WHERE A='Mango' LIMIT 1 OFFSET 1", 0)

grep

Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00

Grep OR – Grep AND – Grep NOT – Match Multiple Patterns The grep, egrep, sed and awk are the most common Linux command line tools for parsing files. From the following article you’ll learn how to match multiple patterns with the OR, AND, NOT operators, using grep, egrep, sed and awk commands from the Linux command line.

incrementing_bash_vars

Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00

Incrementing and Decrementing bash variables One of the most common arithmetic operations when writing Bash scripts is incrementing and decrementing variables. This is most often used in loops as a counter, but it can occur elsewhere in the script as well.

is_number_odd_or_even

Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00

Checking if a Number Is Even or Odd One of the simplest applications we can use the modulo operator for is to check if a number is even or odd. We can do this by using the modulo operator with 2 as the divisor. If the result is 0, then the number is even. Otherwise, it’s odd.

karaoke

Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00

File Naming Convention ---<Karaoke||Lyrics> Batch convert videos to MP3 To batch convert videos to MP3 in a folder, use the for command-line as below: FOR /F "tokens=*" %G IN ('dir /b *.mp4') DO "c:\Program Files (x86)ffmpeg\bin\ffmpeg.exe" -i "%G" -f mp3 -ab 128000 "%~nG.mp3" </article> <article> <h1>makeself</h1> <p>Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00</p> MakeSelf <https://makeself.io/> Q. Is there a way to simply extract the files distributed with a .run file without executing it? A. You can do this by using the —noexec argument, preferably in combination with —target to give it a directory to extract the files. You don’t need to use this with the makeself command, but rather the archive: </article> <article> <h1>path</h1> <p>Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00</p> ostechnix.com /linux-path-environment-variable/ Understanding Linux PATH Environment Variable: A Complete Guide For Beginners sk 14/06/2025 What is the PATH Environment Variable in Linux? By sk Published: June 13, 2025 Written by sk Published: June 13, 2025 815 views 23 mins read 809 </article> <article> <h1>red_hat_based</h1> <p>Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00</p> Commands for RPM based distros rpm subscription manager How to... Set runlevel </article> <article> <h1>remove_version_lock_pkg</h1> <p>Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00</p> Install/Remove the DNF version lock plugin dnf install python3-dnf-plugin-versionlock dnf remove python3-dnf-plugin-versionlock </article> <article> <h1>rpm</h1> <p>Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00</p> rpm Force install package rpm --install --force --nosignature rsyslog-8.2408.0-1.el8.x86_64.rpm --queryformat|--qf List installed rpm packages by package name, including version rpm -qa --qf "%{NAME} %{VERSION}\n" Available Tags For --queryformat </article> <article> <h1>sed</h1> <p>Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00</p> sed Replacing multiple strings with sed While I'm the guy that effectively lives on the command-line, I still rarely use sed. As I've been trying to use it more, I've run into some gotchas, mostly around the regular expression syntax and doing multiple replacements at one time. </article> <article> <h1>setrunlevel</h1> <p>Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00</p> Set runlevel Systemd has replaced sysVinit as the default service manager in RHEL 7/8/9. Some of the sysVinit commands have been symlinked to their RHEL 7/8/9 counterparts, however this will eventually be deprecated in favor of the standard systemd commands in the future. </article> <article> <h1>shell_redirection</h1> <p>Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00</p> Shell Redirection 2&>1 File descriptor 1 is the standard output (stdout). File descriptor 2 is the standard error (stderr). At first, 2>1 may look like a good way to redirect stderr to stdout. However, it will actually be interpreted as “ </article> <article> <h1>start</h1> <p>Anonymous (anonymous@undisclosed.example.com) — 2026-07-09T06:22:45+00:00</p> </article> <article> <h1>tar</h1> <p>Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00</p> 18 Tar Command Examples in Linux The Linux “tar” stands for tape archive, which is used by a large number of Linux/Unix system administrators to deal with tape drive backup in Linux. The tar command in Linux is used to rip a collection of files and directories into a highly compressed archive file commonly called tarball or tar, gzip, and bzip in Linux. </article> <article> <h1>terms</h1> <p>Anonymous (anonymous@undisclosed.example.com) — 2026-07-09T06:18:32+00:00</p> TERMS AND CONDITIONS * Within these terms, conditions and rules, the term “syndicate” shall refer to the collective entrants who have purchased one or more shares in a lottery ticket/s. * Within these terms, conditions and rules, the term “ </article> <article> <h1>use-credits</h1> <p>Anonymous (anonymous@undisclosed.example.com) — 2026-07-09T06:19:41+00:00</p> USE YOUR AVAILABLE CREDITS TO BUY SHARES </article> <article> <h1>validate_a_url</h1> <p>Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00</p> bash function to valid a file url #--- Validate a file url< LOG_MSG="Validating the url: ${URL_TO_CHK}"< fn_write_to_log< wget -S --spider ${URL_TO_CHK} -o ${OUTPUT_DIR}/wget_resp.tmp< VALID_URL=$(grep 404 ${OUTPUT_DIR}/wget_resp.tmp)< if [[ ${VALID_URL} != "" ]]; then< LOG_MSG="*** ERROR: ${URL_TO_CHK} does not exist, or cannot access. EXITING SCRIPT."< fn_write_to_log< fn_controlled_exit< else< LOG_MSG="[OK] ${URL_TO_CHK} is valid."< fn_write_to_log< fi< rm -r ${OUTPUT_D… </article> <article> <h1>version_locking</h1> <p>Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00</p> RHEL: Version lock packages dnf versionlock add kernel-4.18.0-477.43.*< dnf versionlock add kernel-core-4.18.0-477.43.*< dnf versionlock add kernel-modules-4.18.0-477.43.*< dnf versionlock add kernel-tools-4.18.0-477.43.*< dnf versionlock add kernel-tools-libs-4.18.0-477.43.*< </article> <article> <h1>vi_vim</h1> <p>Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00</p> Adding a character to the end of every line, using vim :%norm A* This is what it means: % = for every line// norm = type the following commands// A* = append '*' to the end of current line// ===== vi Complete Key Binding List ===== This is not intended as a tutorial. It is a reference on what every vi key binding does, followed by some useful vi tricks and tips. An expert will probably know most of these already, but an intermediate vi user will find valuable inform… </article> <article> <h1>wget</h1> <p>Anonymous (anonymous@undisclosed.example.com) — 2026-07-07T23:13:32+00:00</p> wget wget does not have an option to override an existing, like curl does. Instead, use the --backups=1 option, which will rename the existing file with a .1 suffix, and writes new file to the intended filename. wget --backups=1 google.com </article> </main></body></html>