ubuntu 18.04 & 20.04 install script

README.md

@@ -12,8 +12,8 @@ The script will make its files in the current directory. So if you want your Ubu
 ```
 mkdir -p ~/jails/ubuntu
 cd ~/jails/ubuntu
-wget https://raw.githubusercontent.com/Neo-Oli/termux-ubuntu/master/ubuntu.sh
-bash ubuntu.sh
+wget https://raw.githubusercontent.com/MoorDev/termux-ubuntu/master/ubuntu-20.04.sh
+bash ubuntu-20.04.sh
 ```
 
 After running it you can run "start-ubuntu.sh" to switch into your ubuntu

ubuntu-18.04.sh

@@ -0,0 +1,79 @@
+#!/data/data/com.termux/files/usr/bin/bash
+folder=ubuntu-fs
+if [ -d "$folder" ]; then
+	first=1
+	echo "skipping downloading"
+fi
+tarball="ubuntu.tar.gz"
+if [ "$first" != 1 ];then
+	if [ ! -f $tarball ]; then
+		echo "downloading ubuntu-image"
+		case `dpkg --print-architecture` in
+		aarch64)
+			archurl="arm64" ;;
+		arm)
+			archurl="armhf" ;;
+		amd64)
+			archurl="amd64" ;;
+		i*86)
+			archurl="i386" ;;
+		x86_64)
+			archurl="amd64" ;;
+		*)
+			echo "unknown architecture"; exit 1 ;;
+		esac
+		wget "https://partner-images.canonical.com/core/bionic/current/ubuntu-bionic-core-cloudimg-${archurl}-root.tar.gz" -O $tarball
+	fi
+	cur=`pwd`
+	mkdir -p "$folder"
+	cd "$folder"
+	echo "decompressing ubuntu image"
+	proot --link2symlink tar -xf ${cur}/${tarball} --exclude='dev'||:
+	echo "fixing nameserver, otherwise it can't connect to the internet"
+	echo "nameserver 1.1.1.1" > etc/resolv.conf
+	cd "$cur"
+fi
+mkdir -p binds
+bin=start-ubuntu.sh
+echo "writing launch script"
+cat > $bin <<- EOM
+#!/bin/bash
+cd \$(dirname \$0)
+## unset LD_PRELOAD in case termux-exec is installed
+unset LD_PRELOAD
+command="proot"
+command+=" --link2symlink"
+command+=" -0"
+command+=" -r $folder"
+if [ -n "\$(ls -A binds)" ]; then
+    for f in binds/* ;do
+      . \$f
+    done
+fi
+command+=" -b /dev"
+command+=" -b /proc"
+## uncomment the following line to have access to the home directory of termux
+#command+=" -b /data/data/com.termux/files/home:/root"
+## uncomment the following line to mount /sdcard directly to / 
+#command+=" -b /sdcard"
+command+=" -w /root"
+command+=" /usr/bin/env -i"
+command+=" HOME=/root"
+command+=" PATH=/usr/local/sbin:/usr/local/bin:/bin:/usr/bin:/sbin:/usr/sbin:/usr/games:/usr/local/games"
+command+=" TERM=\$TERM"
+command+=" LANG=C.UTF-8"
+command+=" /bin/bash --login"
+com="\$@"
+if [ -z "\$1" ];then
+    exec \$command
+else
+    \$command -c "\$com"
+fi
+EOM
+
+echo "fixing shebang of $bin"
+termux-fix-shebang $bin
+echo "making $bin executable"
+chmod +x $bin
+echo "You can now launch Ubuntu with the ./${bin} script"
+

ubuntu-20.04.sh

@@ -0,0 +1,79 @@
+#!/data/data/com.termux/files/usr/bin/bash
+folder=ubuntu-fs
+if [ -d "$folder" ]; then
+	first=1
+	echo "skipping downloading"
+fi
+tarball="ubuntu.tar.gz"
+if [ "$first" != 1 ];then
+	if [ ! -f $tarball ]; then
+		echo "downloading ubuntu-image"
+		case `dpkg --print-architecture` in
+		aarch64)
+			archurl="arm64" ;;
+		arm)
+			archurl="armhf" ;;
+		amd64)
+			archurl="amd64" ;;
+		i*86)
+			archurl="i386" ;;
+		x86_64)
+			archurl="amd64" ;;
+		*)
+			echo "unknown architecture"; exit 1 ;;
+		esac
+		wget "https://partner-images.canonical.com/core/focal/current/ubuntu-focal-core-cloudimg-${archurl}-root.tar.gz" -O $tarball
+	fi
+	cur=`pwd`
+	mkdir -p "$folder"
+	cd "$folder"
+	echo "decompressing ubuntu image"
+	proot --link2symlink tar -xf ${cur}/${tarball} --exclude='dev'||:
+	echo "fixing nameserver, otherwise it can't connect to the internet"
+	echo "nameserver 1.1.1.1" > etc/resolv.conf
+	cd "$cur"
+fi
+mkdir -p binds
+bin=start-ubuntu.sh
+echo "writing launch script"
+cat > $bin <<- EOM
+#!/bin/bash
+cd \$(dirname \$0)
+## unset LD_PRELOAD in case termux-exec is installed
+unset LD_PRELOAD
+command="proot"
+command+=" --link2symlink"
+command+=" -0"
+command+=" -r $folder"
+if [ -n "\$(ls -A binds)" ]; then
+    for f in binds/* ;do
+      . \$f
+    done
+fi
+command+=" -b /dev"
+command+=" -b /proc"
+## uncomment the following line to have access to the home directory of termux
+#command+=" -b /data/data/com.termux/files/home:/root"
+## uncomment the following line to mount /sdcard directly to / 
+#command+=" -b /sdcard"
+command+=" -w /root"
+command+=" /usr/bin/env -i"
+command+=" HOME=/root"
+command+=" PATH=/usr/local/sbin:/usr/local/bin:/bin:/usr/bin:/sbin:/usr/sbin:/usr/games:/usr/local/games"
+command+=" TERM=\$TERM"
+command+=" LANG=C.UTF-8"
+command+=" /bin/bash --login"
+com="\$@"
+if [ -z "\$1" ];then
+    exec \$command
+else
+    \$command -c "\$com"
+fi
+EOM
+
+echo "fixing shebang of $bin"
+termux-fix-shebang $bin
+echo "making $bin executable"
+chmod +x $bin
+echo "You can now launch Ubuntu with the ./${bin} script"
+