Add environment creation scripts.

create_node_env.sh

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+#!/usr/bin/env sh
+
+if [ ! -d "gui" ]; then
+    echo "Error: Run this script from the main FreeDATA directory."
+    exit 1
+fi
+
+# Move into gui directory
+cd gui
+
+# Common variables
+OLDPATH=${PATH}
+PATH=/usr/bin:/bin:/usr/local/bin
+NPM=`which npm`
+PATH=${OLDPATH}
+VENVDIR="`pwd`/node_modules"
+PATH_ADDITIONS="`pwd`/node_modules/bin:`pwd`/node_modules/.bin"
+
+
+# Verify NPM exists.
+if [ -z "${NPM}" -o ! -x "${NPM}" ]; then
+    echo "Error: ${NPM} isn't executable or doesn't exist."
+    exit 1
+fi
+
+${NPM} install n
+${NPM} i
+
+PATH=${PATH_ADDITIONS}:${PATH}
+
+n stable
+
+echo ""
+echo "Be sure to add '$PATH_ADDITIONS' to your path."

create_python_env.sh

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+#!/usr/bin/env sh
+
+if [ ! -d "tnc" ]; then
+    echo "Error: Run this script from the main FreeDATA directory."
+    exit 1
+fi
+
+# Common variables
+VENVDIR="`pwd`/.venv"
+
+# Choose an appropriate python interpreter
+CHOSEN=/bin/python3
+for i in python3.8 python3.9 python3.10 python3.7
+do
+    if [ -x /bin/$i ]; then
+        CHOSEN="/bin/$i"
+        break
+    fi
+done
+
+# Verify it's there.
+if [ ! -x ${CHOSEN} ]; then
+  echo "Error: ${CHOSEN} is not executable or does not exist."
+  exit 1
+fi
+
+# Clear the existing virtual environment.
+if [ -e "${VENVDIR}" ]; then
+    ${CHOSEN} -m venv "${VENVDIR}" --clear
+fi
+
+# Create the virtual environment
+${CHOSEN} -m venv "${VENVDIR}"
+
+# Activate the virtual environment, if needed
+if [ -z "${VIRTUAL_ENV}" -o "${VIRTUAL_ENV}" != "${VENVDIR}" ]; then
+    source "${VENVDIR}/activate"
+fi
+
+# Cease using ${CHOSEN} as the interpreter we want now is in our path.
+
+# Install packages
+python3 -m pip install -U pip wheel
+python3 -m pip install -r requirements.txt
+
+echo ""
+echo "Be sure to run '. $VENVDIR/activate' before starting the daemon."