chore(scripts): backup scripts tweaks and license

local/bin/x-backup-mysql-with-prefix

@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+#
+# Backup local MySQL Database tables with certain prefix.
+# Ismo Vuorinen <https://github.com/ivuorinen> 2018
+# License: MIT
+
+SCRIPT=$(basename "$0")
+PREFIX=$1
+FILENAME=$2
+DATABASE=$3
+
+: "${VERBOSE:=0}"
+: "${DEFAULT_DATABASE:="wordpress"}"
+
+if [ -z "${PREFIX}" ]; then
+  echo "(!) TABLE_PREFIX (first argument) is missing"
+  echo "(>) Usage: $SCRIPT <TABLE_PREFIX> <FILENAME_PREFIX> [<DATABASE>]"
+  echo " * <TABLE_PREFIX>    = database table prefix, e.g. 'wp_'"
+  echo " * <FILENAME_PREFIX> = FILENAME prefix, defaults to table prefix. Use something descriptive e.g. 'wordpress'"
+  echo " * <DATABASE>        = [optional] Third argument DATABASE, defaults to '$DEFAULT_DATABASE'."
+  exit 0
+fi
+
+if [ -z "${FILENAME}" ]; then
+  # echo "FILENAME (second argument) is missing, using PREFIX ($PREFIX)"
+  FILENAME=$PREFIX
+fi
+
+if [ -z "${DATABASE}" ]; then
+  # echo "DATABASE (third argument) is missing, using default ($DEFAULT_DATABASE)"
+  DATABASE=$DEFAULT_DATABASE
+fi
+
+TIMESTAMP=$(date "+%Y%m%d_%H%M%S")
+FILENAME_TIMESTAMP="${DATABASE}_${FILENAME}_${TIMESTAMP}.sql"
+
+mysqldump \
+  "${DATABASE}" \
+  "$(
+    echo "show tables like '${PREFIX}%';" \
+      | mysql "${DATABASE}" \
+      | sed '/Tables_in/d'
+  )" > "${FILENAME_TIMESTAMP}"