[WSL2] Configuration injector

wsl-init.sh

#!/bin/bash

# wsl-init.sh | Version 1.0.0
# License: Unilicense <https://unlicense.org/>
# Author: loopyd <loopyd@github.com>
#
# Simple bash script that injects preferred WSL configuration, and updates the system.
#
# USAGE INSTRUCTIONS
#
# 1.  Clicking "RAW", and copy all to the clipboard by pressing Ctrl + A, and then Ctrl + C
#
# 2.  Move to your terminal and type the following commands (in your WSL shell, at the bash
#     prompt:
#
#     cd $HOME
#     touch wsl-init.sh
#     chmod +x ./wsl-init.sh
#     nano ./wsl-init.sh
#
# 3.  You're in the nano editor now, so paste the contents of the clipboard and press Ctrl + X, 
#     and then Y [enter key] to apply the changes to the file.
#
# 4.  Now you can run:
#
#    ./wsl-init.sh
#
#    To configure your WSL instance and default WSL configuration.
#
# CUSTOMIZATION
#
# For advanced users, you can edit the WSL configuration that gets
# injected by editing the here documents.
#
# If you'd like to add any additional packages to the installation
# you can modify the apt-get install line.
#
# THANK YOU!
#
# If you like this utility, give this gist a star.

#########################################################
# Pre-flight checks
if [ "$EUID" -ne 0 ]; then
        echo "🆙 Auto-elevating script to root..."
        exec sudo "$0" "$@"
fi

#########################################################
# Update system
echo '⏳ Updating system...'
{
        apt-get update && apt-get upgrade -y && apt-get dist-upgrade -y
        apt-get install wslu wget dos2unix -y
} >/dev/null || {
        echo '❌ Failed to update / install dependencies'
        exit 1
}
echo '✅ Updated system successfully.'

#########################################################
# Update local WSL configuration

cat >/etc/wsl.conf <<'EOF'
[boot]
systemd=true

[automount]
enabled = true
root = /mnt/
options = "metadata,uid=1000,gid=1000,umask=077,fmask=11,case=off"
mountFsTab = true

[network]
hostname = SABER7OOTH-PC
generateHosts = true
generateResolvConf = true

[user]
default = saber7ooth

[interop]
enabled = true
appendWindowsPath = false
EOF
echo '✅ Injected local WSL configuration'

#########################################################
# Local wsl configuration.
{
        wsl_USERPROFILE=`wslpath -au $(wslvar USERPROFILE)`
        if [[ -z "$wsl_USERPROFILE" ]]; then
                echo '❌ The C:\ drive is not mounted, please re-run this script after logging back in.' >&2
                exit 1
        fi

        cat >"$wsl_USERPROFILE/.wslconfig" <<'EOF'
[wsl2]
memory = 8GB
localhostForwarding = true
swap = 16GB
swapFile = C:\\tools\\wsl\\swap.vhdx
guiApplications = true
nestedVirtualization = true
vmIdleTimeout = 120000
EOF
        unix2dos "$wsl_USERPROFILE/.wslconfig" 2>/dev/null
} >/dev/null || {
        exit 1
}
echo '✅ Injected windows WSL configuration'

#########################################################
# System tweaks
{
        touch "$HOME/.hushlogin"
} >/dev/null || {
        exit 1
}
echo "✅ Applied system tweaks."

echo '⚠️ Please log out, and restart this WSL instance to apply the changes'