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Linux VM

The scripts in this repository create a VM image containing a Debian 13 (trixie) system. It can be used as a base for a showcase, a VM used in a workshop, etc.

The scripts should be run on a Debian system. Furthermore, create-vm depends on the debootstrap package, and image-to-ova depends on the uuid-runtime and qemu-utils packages.

Type ./create-vm --help or ./image-to-ova --help to display a list of all available options.

Building the Image

The command

./create-vm image.img

creates a raw VM image file image.img. It uses either sudo or su to run as root, and may prompt for the root password.

Creating the image file on a RAM disk speeds up the process, but note that about 6 GB of free space are needed in the directory where the image file is created.

Testing the Image

The following command can be used to test the generated image with qemu:

qemu-system-x86_64 \
-cpu kvm64 \
-machine accel=kvm \
-smp 4 \
-m 8G \
-drive file=image.img,if=virtio,media=disk,format=raw \
-nic user,model=e1000

Converting the Image to a Virtual Appliance

The command

./image-to-ova image.img VM

creates a virtual appliance VM.ova (and other files). The appliance is optimized for VirtualBox, but may work in other virtualization software.

Note that create-vm installs the VirtualBox guest utilities into the image.

If the VBoxManage utility is installed, create-vm uses it internally to convert the image file, otherwise it uses the qemu-img command.

The Virtual Machine

When the virtual machine is started for the first time (or after the cleanup-shutdown command has been used; see below), a dialog is shown during bootup to select the keyboard layout and variant.

The password of the root user is empty. An unprivileged user account with the username user exists in the virtual machine; its password is empty as well.

The command cleanup-shutdown (to be run as root) can be used to clean up the virtual machine after further setup (e.g., after installing additional software). It removes log files, caches, and history files, resets the desktop environment configuration, discards unused disk blocks, and shuts down the virtual machine.

Discarding unused disk blocks decreases the size of the virtual image file. It may take several minutes.

About

Create a VM image containing a Debian Linux system

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Readme
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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
BranchesTags
Repository files navigation
Linux VM
The scripts in this repository create a VM image containing a Debian 13
(trixie) system. It can be used as a base for a showcase, a VM used in a
workshop, etc.
The scripts should be run on a Debian system. Furthermore, create-vm
depends on the debootstrap package, and image-to-ova depends on the
uuid-runtime and qemu-utils packages.
Type ./create-vm --help or ./image-to-ova --help to display a list of
all available options.
Building the Image
The command
./create-vm image.img
creates a raw VM image file image.img. It uses either sudo or su to
run as root, and may prompt for the root password.
Creating the image file on a RAM disk speeds up the process, but note that
about 6 GB of free space are needed in the directory where the image file is
created.
Testing the Image
The following command can be used to test the generated image with qemu:
qemu-system-x86_64 \
-cpu kvm64 \
-machine accel=kvm \
-smp 4 \
-m 8G \
-drive file=image.img,if=virtio,media=disk,format=raw \
-nic user,model=e1000
Converting the Image to a Virtual Appliance
The command
./image-to-ova image.img VM
creates a virtual appliance VM.ova (and other files). The appliance is
optimized for VirtualBox, but may work in other virtualization software.
Note that create-vm installs the VirtualBox guest utilities into the
image.
If the VBoxManage utility is installed, create-vm uses it internally to
convert the image file, otherwise it uses the qemu-img command.
The Virtual Machine
When the virtual machine is started for the first time (or after the
cleanup-shutdown command has been used; see below), a dialog is shown
during bootup to select the keyboard layout and variant.
The password of the root user is empty. An unprivileged user account with
the username user exists in the virtual machine; its password is empty as
well.
The command cleanup-shutdown (to be run as root) can be used to clean up
the virtual machine after further setup (e.g., after installing additional
software). It removes log files, caches, and history files, resets the
desktop environment configuration, discards unused disk blocks, and shuts
down the virtual machine.
Discarding unused disk blocks decreases the size of the virtual image file.
It may take several minutes.
About
Create a VM image containing a Debian Linux system
Resources
Readme
Apache-2.0 license
Activity
Stars
1 star
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Linux VM
The scripts in this repository create a VM image containing a Debian 13
(trixie) system. It can be used as a base for a showcase, a VM used in a
workshop, etc.
The scripts should be run on a Debian system. Furthermore, create-vm
depends on the debootstrap package, and image-to-ova depends on the
uuid-runtime and qemu-utils packages.
Type ./create-vm --help or ./image-to-ova --help to display a list of
all available options.
Building the Image
The command
./create-vm image.img
creates a raw VM image file image.img. It uses either sudo or su to
run as root, and may prompt for the root password.
Creating the image file on a RAM disk speeds up the process, but note that
about 6 GB of free space are needed in the directory where the image file is
created.
Testing the Image
The following command can be used to test the generated image with qemu:
qemu-system-x86_64 \
-cpu kvm64 \
-machine accel=kvm \
-smp 4 \
-m 8G \
-drive file=image.img,if=virtio,media=disk,format=raw \
-nic user,model=e1000
Converting the Image to a Virtual Appliance
The command
./image-to-ova image.img VM
creates a virtual appliance VM.ova (and other files). The appliance is
optimized for VirtualBox, but may work in other virtualization software.
Note that create-vm installs the VirtualBox guest utilities into the
image.
If the VBoxManage utility is installed, create-vm uses it internally to
convert the image file, otherwise it uses the qemu-img command.
The Virtual Machine
When the virtual machine is started for the first time (or after the
cleanup-shutdown command has been used; see below), a dialog is shown
during bootup to select the keyboard layout and variant.
The password of the root user is empty. An unprivileged user account with
the username user exists in the virtual machine; its password is empty as
well.
The command cleanup-shutdown (to be run as root) can be used to clean up
the virtual machine after further setup (e.g., after installing additional
software). It removes log files, caches, and history files, resets the
desktop environment configuration, discards unused disk blocks, and shuts
down the virtual machine.
Discarding unused disk blocks decreases the size of the virtual image file.
It may take several minutes.
About
Create a VM image containing a Debian Linux system
Resources
Readme
Apache-2.0 license
Activity
Stars
1 star
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Linux VM
The scripts in this repository create a VM image containing a Debian 13
(trixie) system. It can be used as a base for a showcase, a VM used in a
workshop, etc.
The scripts should be run on a Debian system. Furthermore, create-vm
depends on the debootstrap package, and image-to-ova depends on the
uuid-runtime and qemu-utils packages.
Type ./create-vm --help or ./image-to-ova --help to display a list of
all available options.
Building the Image
The command
./create-vm image.img
creates a raw VM image file image.img. It uses either sudo or su to
run as root, and may prompt for the root password.
Creating the image file on a RAM disk speeds up the process, but note that
about 6 GB of free space are needed in the directory where the image file is
created.
Testing the Image
The following command can be used to test the generated image with qemu:
qemu-system-x86_64 \
-cpu kvm64 \
-machine accel=kvm \
-smp 4 \
-m 8G \
-drive file=image.img,if=virtio,media=disk,format=raw \
-nic user,model=e1000
Converting the Image to a Virtual Appliance
The command
./image-to-ova image.img VM
creates a virtual appliance VM.ova (and other files). The appliance is
optimized for VirtualBox, but may work in other virtualization software.
Note that create-vm installs the VirtualBox guest utilities into the
image.
If the VBoxManage utility is installed, create-vm uses it internally to
convert the image file, otherwise it uses the qemu-img command.
The Virtual Machine
When the virtual machine is started for the first time (or after the
cleanup-shutdown command has been used; see below), a dialog is shown
during bootup to select the keyboard layout and variant.
The password of the root user is empty. An unprivileged user account with
the username user exists in the virtual machine; its password is empty as
well.
The command cleanup-shutdown (to be run as root) can be used to clean up
the virtual machine after further setup (e.g., after installing additional
software). It removes log files, caches, and history files, resets the
desktop environment configuration, discards unused disk blocks, and shuts
down the virtual machine.
Discarding unused disk blocks decreases the size of the virtual image file.
It may take several minutes.
About
Create a VM image containing a Debian Linux system
Resources
Readme
Apache-2.0 license
Activity
Stars
1 star
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
BranchesTags
Repository files navigation
Linux VM
The scripts in this repository create a VM image containing a Debian 13
(trixie) system. It can be used as a base for a showcase, a VM used in a
workshop, etc.
The scripts should be run on a Debian system. Furthermore, create-vm
depends on the debootstrap package, and image-to-ova depends on the
uuid-runtime and qemu-utils packages.
Type ./create-vm --help or ./image-to-ova --help to display a list of
all available options.
Building the Image
The command
./create-vm image.img
creates a raw VM image file image.img. It uses either sudo or su to
run as root, and may prompt for the root password.
Creating the image file on a RAM disk speeds up the process, but note that
about 6 GB of free space are needed in the directory where the image file is
created.
Testing the Image
The following command can be used to test the generated image with qemu:
qemu-system-x86_64 \
-cpu kvm64 \
-machine accel=kvm \
-smp 4 \
-m 8G \
-drive file=image.img,if=virtio,media=disk,format=raw \
-nic user,model=e1000
Converting the Image to a Virtual Appliance
The command
./image-to-ova image.img VM
creates a virtual appliance VM.ova (and other files). The appliance is
optimized for VirtualBox, but may work in other virtualization software.
Note that create-vm installs the VirtualBox guest utilities into the
image.
If the VBoxManage utility is installed, create-vm uses it internally to
convert the image file, otherwise it uses the qemu-img command.
The Virtual Machine
When the virtual machine is started for the first time (or after the
cleanup-shutdown command has been used; see below), a dialog is shown
during bootup to select the keyboard layout and variant.
The password of the root user is empty. An unprivileged user account with
the username user exists in the virtual machine; its password is empty as
well.
The command cleanup-shutdown (to be run as root) can be used to clean up
the virtual machine after further setup (e.g., after installing additional
software). It removes log files, caches, and history files, resets the
desktop environment configuration, discards unused disk blocks, and shuts
down the virtual machine.
Discarding unused disk blocks decreases the size of the virtual image file.
It may take several minutes.
About
Create a VM image containing a Debian Linux system
Resources
Readme
Apache-2.0 license
Activity
Stars
1 star
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Linux VM
The scripts in this repository create a VM image containing a Debian 13
(trixie) system. It can be used as a base for a showcase, a VM used in a
workshop, etc.
The scripts should be run on a Debian system. Furthermore, create-vm
depends on the debootstrap package, and image-to-ova depends on the
uuid-runtime and qemu-utils packages.
Type ./create-vm --help or ./image-to-ova --help to display a list of
all available options.
Building the Image
The command
./create-vm image.img
creates a raw VM image file image.img. It uses either sudo or su to
run as root, and may prompt for the root password.
Creating the image file on a RAM disk speeds up the process, but note that
about 6 GB of free space are needed in the directory where the image file is
created.
Testing the Image
The following command can be used to test the generated image with qemu:
qemu-system-x86_64 \
-cpu kvm64 \
-machine accel=kvm \
-smp 4 \
-m 8G \
-drive file=image.img,if=virtio,media=disk,format=raw \
-nic user,model=e1000
Converting the Image to a Virtual Appliance
The command
./image-to-ova image.img VM
creates a virtual appliance VM.ova (and other files). The appliance is
optimized for VirtualBox, but may work in other virtualization software.
Note that create-vm installs the VirtualBox guest utilities into the
image.
If the VBoxManage utility is installed, create-vm uses it internally to
convert the image file, otherwise it uses the qemu-img command.
The Virtual Machine
When the virtual machine is started for the first time (or after the
cleanup-shutdown command has been used; see below), a dialog is shown
during bootup to select the keyboard layout and variant.
The password of the root user is empty. An unprivileged user account with
the username user exists in the virtual machine; its password is empty as
well.
The command cleanup-shutdown (to be run as root) can be used to clean up
the virtual machine after further setup (e.g., after installing additional
software). It removes log files, caches, and history files, resets the
desktop environment configuration, discards unused disk blocks, and shuts
down the virtual machine.
Discarding unused disk blocks decreases the size of the virtual image file.
It may take several minutes.
About
Create a VM image containing a Debian Linux system
Resources
Readme
Apache-2.0 license
Activity
Stars
1 star
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Linux VM
The scripts in this repository create a VM image containing a Debian 13
(trixie) system. It can be used as a base for a showcase, a VM used in a
workshop, etc.
The scripts should be run on a Debian system. Furthermore, create-vm
depends on the debootstrap package, and image-to-ova depends on the
uuid-runtime and qemu-utils packages.
Type ./create-vm --help or ./image-to-ova --help to display a list of
all available options.
Building the Image
The command
./create-vm image.img
creates a raw VM image file image.img. It uses either sudo or su to
run as root, and may prompt for the root password.
Creating the image file on a RAM disk speeds up the process, but note that
about 6 GB of free space are needed in the directory where the image file is
created.
Testing the Image
The following command can be used to test the generated image with qemu:
qemu-system-x86_64 \
-cpu kvm64 \
-machine accel=kvm \
-smp 4 \
-m 8G \
-drive file=image.img,if=virtio,media=disk,format=raw \
-nic user,model=e1000
Converting the Image to a Virtual Appliance
The command
./image-to-ova image.img VM
creates a virtual appliance VM.ova (and other files). The appliance is
optimized for VirtualBox, but may work in other virtualization software.
Note that create-vm installs the VirtualBox guest utilities into the
image.
If the VBoxManage utility is installed, create-vm uses it internally to
convert the image file, otherwise it uses the qemu-img command.
The Virtual Machine
When the virtual machine is started for the first time (or after the
cleanup-shutdown command has been used; see below), a dialog is shown
during bootup to select the keyboard layout and variant.
The password of the root user is empty. An unprivileged user account with
the username user exists in the virtual machine; its password is empty as
well.
The command cleanup-shutdown (to be run as root) can be used to clean up
the virtual machine after further setup (e.g., after installing additional
software). It removes log files, caches, and history files, resets the
desktop environment configuration, discards unused disk blocks, and shuts
down the virtual machine.
Discarding unused disk blocks decreases the size of the virtual image file.
It may take several minutes.
About
Create a VM image containing a Debian Linux system
Resources
Readme
Apache-2.0 license
Activity
Stars
1 star
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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Linux VM
The scripts in this repository create a VM image containing a Debian 13
(trixie) system. It can be used as a base for a showcase, a VM used in a
workshop, etc.
The scripts should be run on a Debian system. Furthermore, create-vm
depends on the debootstrap package, and image-to-ova depends on the
uuid-runtime and qemu-utils packages.
Type ./create-vm --help or ./image-to-ova --help to display a list of
all available options.
Building the Image
The command
./create-vm image.img
creates a raw VM image file image.img. It uses either sudo or su to
run as root, and may prompt for the root password.
Creating the image file on a RAM disk speeds up the process, but note that
about 6 GB of free space are needed in the directory where the image file is
created.
Testing the Image
The following command can be used to test the generated image with qemu:
qemu-system-x86_64 \
-cpu kvm64 \
-machine accel=kvm \
-smp 4 \
-m 8G \
-drive file=image.img,if=virtio,media=disk,format=raw \
-nic user,model=e1000
Converting the Image to a Virtual Appliance
The command
./image-to-ova image.img VM
creates a virtual appliance VM.ova (and other files). The appliance is
optimized for VirtualBox, but may work in other virtualization software.
Note that create-vm installs the VirtualBox guest utilities into the
image.
If the VBoxManage utility is installed, create-vm uses it internally to
convert the image file, otherwise it uses the qemu-img command.
The Virtual Machine
When the virtual machine is started for the first time (or after the
cleanup-shutdown command has been used; see below), a dialog is shown
during bootup to select the keyboard layout and variant.
The password of the root user is empty. An unprivileged user account with
the username user exists in the virtual machine; its password is empty as
well.
The command cleanup-shutdown (to be run as root) can be used to clean up
the virtual machine after further setup (e.g., after installing additional
software). It removes log files, caches, and history files, resets the
desktop environment configuration, discards unused disk blocks, and shuts
down the virtual machine.
Discarding unused disk blocks decreases the size of the virtual image file.
It may take several minutes.
About
Create a VM image containing a Debian Linux system
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