#!/bin/bash
# This is a bash script that adds the Debian Unstable repository to the system's sources list.
# It is used to ensure that the latest information about available packages and their versions is obtained.
# To run this script, open the Terminal by pressing "Ctrl + Alt + T" or searching for "Terminal" in the Activities menu.

# Update the package list by running the "sudo apt update" command.
sudo apt update

# Add the Debian Unstable repository to the sources list by creating a new file named "debian.list" in the "/etc/apt/sources.list.d/" directory.
# The "echo" command is used to write the repository URL to the file.
echo "deb http://ftp.debian.org/debian unstable main contrib non-free" > /etc/apt/sources.list.d/debian.list

# This script adds the Debian Experimental repository to the system's sources list

# The "echo" command prints the specified string to the terminal
# The string in this case is the repository URL, followed by the location where it will be saved

# The ">" symbol redirects the output of the "echo" command to the specified file
# In this case, the repository URL will be saved in the "debian.list" file located in the "sources.list.d" directory

# The "deb" prefix indicates that this is a Debian repository
# The URL is followed by the repository type, which is "experimental"
# The "main" component specifies the main section of the repository, where the majority of packages are located

# The "/etc/apt/sources.list.d" directory is where additional sources lists can be stored
# The "debian.list" file is created in this directory to store the repository URL

echo "deb http://deb.debian.org/debian experimental main" > /etc/apt/sources.list.d/debian.list

# This line installs the "socat" package from the "experimental" repository and the "netperf" package from the "unstable" repository.
sudo apt install socat/experimental netperf/unstable

#!/bin/bash

# This line sets the default release for apt to "kali-rolling"
APT::Default-Release "kali-rolling";

# This line adds the specified text to the end of the /etc/apt/apt.conf.d/local file
echo "APT::Default-Release "kali-rolling";" >> /etc/apt/apt.conf.d/local

# This script is used to update the /etc/apt/apt.conf.d/local file to reduce upgrade prompts.

# The following line sets the options for dpkg, which is used for package management.
# The "--force-confdef" option forces dpkg to use the default configuration for any new configuration files.
# The "--force-confold" option forces dpkg to keep the old configuration for any existing configuration files.
DPkg::options { "--force-confdef"; "--force-confold"; }

# The following line sets the default release for apt, which is used for package management.
# The "kali-rolling" release is used for rolling updates in Kali Linux.
APT::Default-Release "kali-rolling";

#!/bin/bash

# This script is used to pin a package to a particular version by adding a line to the /etc/apt/preferences file.

# The following code segment defines the package name.
Package: devscripts

# The following code segment specifies the version of the package to be pinned.
# The asterisk (*) is used as a wildcard to match any version number.

Pin: version 2.16.*

# The following code segment sets the priority for the pinned package.
# A higher priority number means a higher preference for the package.

Pin-Priority: 1001