First commit of files to backup and restore Solus packages

solus_package_restore.sh

@@ -0,0 +1,135 @@
+#!/usr/bin/env bash
+
+function usage {
+   echo "./$(basename "$0")[-h] [-r -d -y] -- Makes a list of installed packages for Solus, optionaly removes package cache, adds the repo specified and reinstalls packages
+
+   where:
+      -h  Show this help text
+      -b  Back up list of packages even if the backup file already exists
+      -d  Delete the repo cache
+      -r  Repo to install: stable (default) or unstable
+      -v  Show verbose output
+
+   Ex:
+   Restore the unstable repo and packages
+     solus_package_restore.sh -r unstable
+
+   Make package backup, delete repo cache, restore the unstable repo and packages
+      solus_package_restore.sh -b -d -r unstable
+   "
+}
+
+function print_out {
+   local MESSAGE="$*"
+   if [[ "${VERBOSE}" == true ]];then
+      echo "$MESSAGE"
+   fi
+}
+
+function savepkgs {
+   echo "Saving package list as requested"
+   source "${FOLDER}"/solus_package_backup.sh
+}
+
+function delete_cache {
+   if [[ "${DELCACHE}" == true ]];then
+      print_out "Deleting the package cache"
+      sudo rm -rf /var/lib/eopkg/*
+      print_out "Rebuilding package database"
+      sudo eopkg rdb
+   fi
+}
+
+function check_repo_status {
+   echo "Checking repo status"
+   STABLE_STATUS=$(sudo eopkg list-repo |sed -n '/Solus \+/p')
+   UNSTABLE_STATUS=$(sudo eopkg list-repo |sed -n '/Solus-Dev \+/p')
+
+}
+
+function install_repo {
+   sudo eopkg ar $NAME $URL
+   sudo eopkg enable-repo $NAME
+}
+
+# Set defaults
+FILE=~/InstalledPackages
+FOLDER=~/git/shell-scripts
+REPO=stable
+NAME=Solus
+URL=https://mirrors.rit.edu/solus/packages/shannon/eopkg-index.xml.xz
+
+# list of arguments expected in the input
+optstring=":hbdr:v"
+
+while getopts ${optstring} option; do
+  case "${option}" in
+   h) usage
+      exit
+      ;;
+   b)
+      BACKUP_PKGS='true'
+      ;;
+   d) DELCACHE='true'
+      delete_cache
+      ;;
+   r) REPO="${OPTARG}"
+      ;;
+   v)
+      VERBOSE='true'
+      print_out "Verbose mode is ON"
+         ;;
+   ?)
+      echo "Invalid option: -${OPTARG}." >&2
+      usage >&2
+      exit 1
+      ;;
+  esac
+done
+shift $((OPTIND - 1))
+
+print_out "Repo to install from: $REPO"
+# Export all installed packages to a text file in one line if the file does not exist
+if [ -f "${FILE}" ]; then
+    print_out "Package list file ${FILE} found."
+else
+    echo "${FILE} does not exist or is empty! Making a backup of packages now."
+
+    savepkgs
+fi
+
+if [[ "${BACKUP_PKGS}" == true ]];then
+   savepkgs
+fi
+
+check_repo_status
+
+# Add stable repo and enable if necessary
+# The stable repo should always be installed
+if [[ $STABLE_STATUS =~ active ]]; then
+   print_out "Stable repo is already installed"
+else
+   echo "Installing and enabling the stable repo"
+   install_repo
+fi
+
+# Add unstable repo and enable based on input
+if [[ ${REPO} = 'unstable' ]]; then
+print_out "Checking the unstable repo"
+   if [[ $UNSTABLE_STATUS  =~ active ]]; then
+      echo "Unstable repo is already installed"
+   else
+      echo "Installing and enabling the unstable repo, disabling the stable repo"
+      URL=https://mirrors.rit.edu/solus/packages/unstable/eopkg-index.xml.xz
+      NAME=Solus-Dev
+      sudo eopkg disable-repo Solus
+      install_repo
+   fi
+fi
+
+# Upgrade
+sudo eopkg up
+# Install all previously installed packages.
+sudo eopkg install $(cat ${FILE})
+
+echo "Package restore complete"