We started producing shows as Today with a Techie on 2005-09-19, 16 years, 0 months, 8 days ago. Our shows are produced by listeners like you and can be on any topic that "are of interest to Hackers". If you listen to HPR then please consider contributing one show a year. If you record your show now it could be released in 21 days.
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In this episode, our two hosts host Rhys Davies, a developer advocate from Canonical. So all beans will be spilled on one of the most popular Linux distros out there. Like its past, present and future. Never mind how Canonical makes its moolah and where this goes... Plus an interesting infomercial on old big iron (IBM, if you're listening: the mail address is sponsor@linuxinlaws.eu).
Here I tell the tale of a bad disk rescue. Is the rescue bad or just the disk? Well the disk is most certainly bad but please listen and tell me if the rescue was good or bad or could have been done better.
Guest stars in this show include:
Hosted by b-yeezi on 2021-09-21 is flagged as Clean and released under a CC-BY-SA license.
Tags: ranger,file manager,linux.
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Comments (1)
fn main() {
// Type declared with var: <T> syntax
let penguin_one: &str = "gentoo";
// Type &str is inherited from "gentoo"
let penguin_two = "gentoo";
// Will not panic if they are the same
assert_eq!(penguin_one, penguin_two);
}Wrong Way:
fn print_u8_vector(vec: Vec<u8>) {
println!("{:?}", vec);
}
fn main() {
let penguin_ages: Vec<u8> = vec!(2, 4, 6);
print_u8_vector(penguin_ages);
// This line will throw an error
println!("{}", penguin_ages[0]);
}Correct Way:
fn print_u8_vector(vec: &Vec<u8>) {
println!("{:?}", vec);
}
fn main() {
let penguin_ages: Vec<u8> = vec!(2, 4, 6);
print_u8_vector(&penguin_ages);
// This line will print '2'
println!("{}", penguin_ages[0]);
}Wrong Way:
fn main() {
let my_num = 2;
// This line will throw an error
my_num = my_num + 1;
println!("{}", my_num);
}Correct Way:
fn main() {
let mut my_num = 2;
my_num = my_num + 1;
// This line will print '3'
println!("{}", my_num);
}Hello World Program in C in Rust:
extern "C" {
fn printf(input: &str);
}
fn main() {
unsafe {
printf("Hello, World!");
}
}Email: izzyleibowitz at pm dot me
Mastodon: at blackernel at nixnet dot social
I talk about some old old old pentesting stories from days old!
Inoffensive in every region of the world.
Thank you to everyone who has listened to my previous episodes. This is the final episode in the Infosec Podcasts series.
I listen to many, MANY podcasts. The vast majority of these are related to information security.
Because there are so many podcasts to list, I have broken them down into 6 different episodes based on topics:
Preamble
Term: CISO
Security leadership is changing
Old way:
New way:
Infosec Leadership Podcasts
That wraps up this series. I welcome any feedback you might have in the comments section for this episode on the HPR site.
Thank you very much for listening.
Hosted by Some Guy On The Internet on 2021-09-15 is flagged as Clean and released under a CC-BY-SA license.
Tags: Bash Scripting, sed, awk, xargs, markdown, notes.
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SYNOPSIS: upg.sh
#!/bin/bash
# upg.sh
FILENAME=sys-upgrade$(date +%m-%d-%Y).md
DIRECTORY="${HOME}/Documents/"
# step 1: formatting.
echo -e "# **System Upgrade:** $(date)\n" \
| tee -a ${DIRECTORY}${FILENAME}
echo -e "**Command:** \`sudo apt-get update; sudo apt-get upgrade --yes\`\n" \
| tee -a ${DIRECTORY}${FILENAME}
echo -e "**Command Breakdown:**" \
| tee -a ${DIRECTORY}${FILENAME}
echo -e "- \`sudo\`, Admin Privilages." \
| tee -a ${DIRECTORY}${FILENAME}
echo -e "- \`apt-get\`, Package Manager." \
| tee -a ${DIRECTORY}${FILENAME}
echo -e "- \`update;\`, Package Manager's task; update the system software repositories." \
| tee -a ${DIRECTORY}${FILENAME}
echo -e "- \`sudo apt-get upgrade\`, Perform system upgrade with updated repositories." \
| tee -a ${DIRECTORY}${FILENAME}
echo -e "- \`--yes\`, Answers yes to the prompt." \
| tee -a ${DIRECTORY}${FILENAME}
# step 2: run commands with formatting.
echo -e "\n**Command std-output:**\n" \
| tee -a ${DIRECTORY}${FILENAME}
echo -e "\`\`\`" \
| tee -a ${DIRECTORY}${FILENAME}
echo $(date) \
| tee -a ${DIRECTORY}${FILENAME}
sudo apt-get update \
| tee -a ${DIRECTORY}${FILENAME}
echo -e "\n# System update completed.\n" \
| tee -a ${DIRECTORY}${FILENAME}
sudo apt-get upgrade --yes \
| tee -a ${DIRECTORY}${FILENAME}
echo -e "\n# System upgrade completed.\n" \
| tee -a ${DIRECTORY}${FILENAME}
echo -e "\`\`\`\n" \
| tee -a ${DIRECTORY}${FILENAME}
# step 3: additional details with more formatting.
echo -e "**Upgraded Package Details:**\n" \
| tee -a ${DIRECTORY}${FILENAME}
echo -e "\`\`\`" \
| tee -a ${DIRECTORY}${FILENAME}
PKGLIST=$(sed -n "/The following packages will be upgraded:/,/^.. upgraded/p" ${FILENAME} \
| sed '1d;$d' | xargs -n 1 | sed '/:i386$/d') \
PKGCACHE=$(echo -e "${PKGLIST}\n" \
| xargs -n1 -I _ apt-cache search _)
echo "${PKGCACHE}" > ${DIRECTORY}delete.txt
echo "${PKGLIST}" \
| xargs -n 1 -I _ echo "sed -n '/^_ /p'" "${DIRECTORY}delete.txt" \
| bash | tee -a ${DIRECTORY}${FILENAME};
echo -e "\`\`\`" \
| tee -a ${DIRECTORY}${FILENAME}
rm -v ${DIRECTORY}delete.txt;
PKGLIST=
PKGCACHE=
# step 4: place EOF (end of file).
sed -i '/EOF/d' ${DIRECTORY}${FILENAME}
echo "EOF" >> ${DIRECTORY}${FILENAME}
#EOF
Script breakdown: upg.sh
First, we declare bash as our shell with #!/bin/bash. We could also use #!/bin/sh for a more portable script.
I like to paste the name of the script we're working on into the script itself # upg.sh.
Setup a couple of variables to shorten the syntax.
FILENAME=sys-upgrade$(date +%m-%d-%Y).md
DIRECTORY="${HOME}/Documents/"
# step 1: formatting.
echo -e "# **System Upgrade:** $(date)\n" \ <-- formatting: label with date.
| tee -a ${DIRECTORY}${FILENAME} <-- path/to/file
echo -e "**Command:** \`sudo apt-get update; sudo apt-get upgrade --yes\`\n" \ <-- formatting: command label.
| tee -a ${DIRECTORY}${FILENAME} <-- path/to/file
echo -e "**Command Breakdown:**" \ <-- formatting: label.
| tee -a ${DIRECTORY}${FILENAME} <-- path/to/file
echo -e "- \`sudo\`, Admin Privilages." \ <-- formatting: label.
| tee -a ${DIRECTORY}${FILENAME} <-- path/to/file
echo -e "- \`apt-get\`, Package Manager." \ <-- formatting: label.
| tee -a ${DIRECTORY}${FILENAME} <-- path/to/file
echo -e "- \`update;\`, Package Manager's task; update the system software repositories." \ <-- formatting: label.
| tee -a ${DIRECTORY}${FILENAME} <-- path/to/file
echo -e "- \`sudo apt-get upgrade\`, Perform system upgrade with updated repositories." \ <-- formatting: label.
| tee -a ${DIRECTORY}${FILENAME} <-- path/to/file
echo -e "- \`--yes\`, Answers yes to the prompt." \ <-- formatting: label.
| tee -a ${DIRECTORY}${FILENAME} <-- path/to/file
# step 2: run commands with formatting.,
echo -e "\n**Command std-output:**\n" \ <-- formatting: label.
| tee -a ${DIRECTORY}${FILENAME}
echo -e "\`\`\`" \ <-- formatting: markdown.
| tee -a ${DIRECTORY}${FILENAME}
echo $(date) \ <-- command: date.
| tee -a ${DIRECTORY}${FILENAME}
sudo apt-get update \ <-- command: update.
| tee -a ${DIRECTORY}${FILENAME}
echo -e "\n# System update completed.\n" \ <-- formatting: label.
| tee -a ${DIRECTORY}${FILENAME}
sudo apt-get upgrade --yes \ <-- command: upgrade with "--yes" option.
| tee -a ${DIRECTORY}${FILENAME}
echo -e "\n# System upgrade completed.\n" \ <-- formatting: label.
| tee -a ${DIRECTORY}${FILENAME}
echo -e "\`\`\`\n" \ <-- formatting: markdown.
| tee -a ${DIRECTORY}${FILENAME}
# step 3: additional details with more formatting.,
echo -e "**Upgraded Package Details:**\n" \ <-- formatting: label.
| tee -a ${DIRECTORY}${FILENAME}
echo -e "\`\`\`" \ <-- formatting: markdown.
| tee -a ${DIRECTORY}${FILENAME}
PKGLIST=$(sed -n "/The following packages will be upgraded:/,/^.. upgraded/p" ${DIRECTORY}${FILENAME} \ <--| variable with list of packages within it.
| sed '1d;$d' | xargs -n 1 | sed '/:i386$/d') \ <--| sed: filter the first and last lines then remove the :i386 duplicate packages.
PKGCACHE=$(echo -e "${PKGLIST}\n" \ <--| variable with massive apt-cache search results.
| xargs -n1 -I _ apt-cache search _) <--| xargs runs the PKGLIST (the _ is the value of PKGLIST) into the apt-cache search.
echo "${PKGCACHE}" > ${DIRECTORY}delete.txt <--| I had to put the PKGCACHE in a file. I couldn't get sed to filter a variable (yet).
echo "${PKGLIST}" \ <--| use that PKGLIST to create a few sed commands to filter the file called "delete.txt".
| xargs -n 1 -I _ echo "sed -n '/^_ /p'" "${DIRECTORY}delete.txt" \ ^--| xargs is used to create the sed commands.
| bash | tee -a ${DIRECTORY}${FILENAME}; <--| run the sed commands through bash then store them.
echo -e "\`\`\`" \
| tee -a ${DIRECTORY}${FILENAME}
rm -v ${DIRECTORY}delete.txt; <--| use rm to delete the file called "delete.txt" it has the apt-cache search results in it.
PKGLIST= <--| empty the variable. why? why not!
PKGCACHE= <--| empty the variable. why? why not!
# step 4: place EOF (end of file).,
sed -i '/EOF/d' ${DIRECTORY}${FILENAME} <--| search for EOF then remove it. we don't want multiple EOF if we run the script multiple times in the same day.
echo "EOF" >> ${DIRECTORY}${FILENAME} ^--| adds the EOF (End Of File) at the end of the file. I read it was a nice thing to do.
#EOF <--| Yep. it's there.
SYNOPSIS: note.sh "command" "filename"
#!/bin/bash
# note.sh "command" "filename" no extentions.
# variables
FILENAME=$2$(date +%m-%d-%Y).md
DIRECTORY="${HOME}/Documents/"
# step 1: create file with formatting.
echo -e "# **Command:** \` $1 \`\n" \
| tee -a ${DIRECTORY}${FILENAME}
echo -e "**Command Breakdown:**" \
| tee -a ${DIRECTORY}${FILENAME}
echo "$1" | tr " " '\n' \
| awk '{ print "- `" $0 "`, info." }' \
| tee -a ${DIRECTORY}${FILENAME}
# step 2: run command with more formatting.
echo -e "\n**Command std-output:**" \
| tee -a ${DIRECTORY}${FILENAME}
echo -e "\`\`\`\n$(date)" \
| tee -a ${DIRECTORY}${FILENAME}
echo $1 | bash \
| tee -a ${DIRECTORY}${FILENAME}
echo -e "\`\`\`" \
| tee -a ${DIRECTORY}${FILENAME}
echo -ne "\n${FILENAME} has been updated $(date)."
# step 3: insert EOF (End Of File).
sed -i '/EOF/d' ${DIRECTORY}${FILENAME}
echo EOF >> ${DIRECTORY}${FILENAME}
Script breakdown: upg.sh
First, we declare bash as our shell with #!/bin/bash. We could also use #!/bin/sh for a more portable script.
I like to paste the name of the script we're working on into the script itself # upg.sh.
Setup a couple of variables to shorten the syntax.
FILENAME=$2$(date +%m-%d-%Y).md <--| the "$2" is the second user input (file name) from the commandline.
DIRECTORY="${HOME}/Documents/"
# step 1: create file with formatting.
echo -e "# **Command:** \` $1 \`\n" \ <--| the "$1" is the first user input (the command) from the commandline.
| tee -a ${DIRECTORY}${FILENAME}
echo -e "**Command Breakdown:**" \
| tee -a ${DIRECTORY}${FILENAME}
echo "$1" | tr " " '\n' \ <--| This just breaks the command into parts then adds some markdown formatting for use to add -
| awk '{ print "- `" $0 "`, info." }' \ ^--| details to later. I just added the word info so you know to provide info about the command. -
| tee -a ${DIRECTORY}${FILENAME} ^--| the formatting gets a bit crazy if you use something like: awk {' print $1 $2 $3 '} path/to/file; each space becomes a newline with the markdown formatting.
# step 2: run command with more formatting.
echo -e "\n**Command std-output:**" \
| tee -a ${DIRECTORY}${FILENAME}
echo -e "\`\`\`\n$(date)" \
| tee -a ${DIRECTORY}${FILENAME}
echo $1 | bash \
| tee -a ${DIRECTORY}${FILENAME}
echo -e "\`\`\`" \
| tee -a ${DIRECTORY}${FILENAME}
echo -ne "\n${FILENAME} has been updated $(date)."
# step 3: insert EOF (End Of File).
sed -i '/EOF/d' ${DIRECTORY}${FILENAME}
echo EOF >> ${DIRECTORY}${FILENAME}
Correspondent: Some Guy On The Internet.
Host ID: 391
E-mail: Lyunpaw.nospam@nospam.gmail.com
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Hosted by JWP on 2021-09-14 is flagged as Clean and released under a CC-BY-SA license.
Tags: Android, phone, Linux, Pine64, Smart Watch.
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Comments (0)
Small update about my new RedMi 10s and my new Monty Mint phone.
Hosted by Ahuka on 2021-09-10 is flagged as Clean and released under a CC-BY-SA license.
Tags: GIMP, Layer Modes, Blending Modes.
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Series: GIMP | Comments (2)
Layer Modes, sometimes called Blending Modes, allow you to combine layers in a variety of ways. We'll begin with the Normal modes and work our way through many, but not all, of the Layer Modes available on the latest (at the time I write this) version of GIMP, 2.10.20.
Get a full list of all our shows.