Update homedir detection & config creation code

startup.sh

@@ -1,9 +1,20 @@
 #!/usr/bin/env bash
 # shellcheck disable=SC2154
+set -eo pipefail
 
-cd "${HOME:?}/.bashrc.d" || (
+# Define variables
+export "BASHRCD_FALLBACK=exec env --ignore-environment bash --norc --noprofile"
+
+if [ -z "${BASHRCD_SYSTEM}" ]; then
+	export "BASHRCD_HOMEDIR=${HOME:?}/.bashrc.d"
+else
+	export "BASHRCD_HOMEDIR=/etc/bashrc.d"
+fi
+
+# cd into to home directory
+cd "${BASHRCD_HOMEDIR}" || (
  echo ":: Can't cd into ${HOME:?}/.bashrc.d"
- exit 1
+ ${BASHRCD_FALLBACK}
 )
 
 # Initialize basic stuff
@@ -13,7 +24,11 @@ cd "${HOME:?}/.bashrc.d" || (
 [[ -f "init.d/functions.sh" ]] && source "init.d/functions.sh"
 
 # Create new configuration file
-[[ ! -f "config.sh" ]] && $(which cat) << EOF >> config.sh
+if [ ! -f "config.sh" ]; then
+	if [ -n "${BASHRCD_SYSTEM}" ] && [ "${UID}" != "0" ]; then
+		echo ":: Warning: Can't create system-wide configuration file as normal user."
+	else	
+		$(which cat) << EOF >> config.sh
 #!/usr/bin/env bash
 CONFIG_FLOW_CONTROL=0
 CONFIG_AUTOSAVE_HISTORY=1
@@ -22,6 +37,8 @@ CONFIG_EDITOR=nano
 CONFIG_REPLACE_PKGMGR_ORIGINAL=pacman
 CONFIG_REPLACE_PKGMGR_REPLACEMENT=paru
 EOF
+	fi
+fi
 
 # Load configuration file
 source "config.sh"
@@ -62,3 +79,5 @@ for file in startup.d/*; do
  # shellcheck disable=SC1090
  source "${file}"
 done
+
+set +eo pipefail