Update WSL.ps1

Author: kousu

scripts/WSL.ps1

@@ -8,10 +8,11 @@ Add-AppxPackage -Path ~/Ubuntu.appx
 
 RefreshEnv
 
+$distro = "ubuntu1804"
 $username = "ubuntu"
 $password = "ubuntu"
 
-Ubuntu1804 install --root
+& $distro install --root
 if ($LASTEXITCODE -ne 0) { throw "Could not install distro." }
 
 # the only non-interactive way to set up a WSL distro is the --root flag
@@ -21,16 +22,13 @@ if ($LASTEXITCODE -ne 0) { throw "Could not install distro." }
 # Workaround this by installing with --root but then replicating,
 # noninteractively, what happens in the WSL DistroLauncher:
 #   https://github.com/microsoft/WSL-DistroLauncher/blob/2ed9a9335fc89a688a5150c95eff4fbdbc830f25/DistroLauncher/DistributionInfo.cpp#L8-L33
-wsl -d Ubuntu-18.04 -u root useradd -m "$username"
+& $distro run useradd -m "$username"
 if ($LASTEXITCODE -ne 0) { throw }
-wsl -d Ubuntu-18.04 -u root sh -c 'echo "${username}:${password}" | chpasswd' # wrapped in sh -c to get the pipe to work
+& $distro run sh -c 'echo "${username}:${password}" | chpasswd' # wrapped in sh -c to get the pipe to work
 if ($LASTEXITCODE -ne 0) { throw }
-wsl -d Ubuntu-18.04 -u root  chsh -s /bin/bash "$username"
+& $distro run chsh -s /bin/bash "$username"
 if ($LASTEXITCODE -ne 0) { throw }
-wsl -d Ubuntu-18.04 -u root usermod -aG adm,cdrom,sudo,dip,plugdev "$username"
-if ($LASTEXITCODE -ne 0) { throw }
-
-Ubuntu1804 config --default-user "$username"
+& $distro run usermod -aG adm,cdrom,sudo,dip,plugdev "$username"
 if ($LASTEXITCODE -ne 0) { throw }
 
 
@@ -39,15 +37,18 @@ $env:DEBIAN_FRONTEND = "noninteractive"
 $env:WSLENV += ":DEBIAN_FRONTEND"
 
 # update software
-wsl -d Ubuntu-18.04 -u root apt-get update
+& $distro run apt-get update
 if ($LASTEXITCODE -ne 0) { throw }
-wsl -d Ubuntu-18.04 -u root apt-get full-upgrade -y
+& $distro run apt-get full-upgrade -y
 if ($LASTEXITCODE -ne 0) { throw }
-wsl -d Ubuntu-18.04 -u root apt-get autoremove -y
+& $distro run apt-get autoremove -y
 if ($LASTEXITCODE -ne 0) { throw }
-wsl -d Ubuntu-18.04 -u root apt-get autoclean
+& $distro run apt-get autoclean
 if ($LASTEXITCODE -ne 0) { throw }
-wsl --shutdown  # instead of 'reboot'
+wsl --terminate "Ubuntu-18.04"  # instead of 'reboot'
+if ($LASTEXITCODE -ne 0) { throw }
+
+& $distro config --default-user "$username"
 if ($LASTEXITCODE -ne 0) { throw }
 
 <#