diff --git a/.bashrc b/.bashrc
index aaecbdc..45d1b78 100644
--- a/.bashrc
+++ b/.bashrc
@@ -54,7 +54,7 @@ hash -r
 unalias -a
 unset POSIXLY_CORRECT
 
-################################# ENVIRONMENT ##################################
+################################# environment ##################################
 export EDITOR="$({	type -P nvim ||
 					type -P vim  ||
 					type -P vi   ||
@@ -291,7 +291,7 @@ write_history () {
 		rm -f -- "${HISTFILE}"
 } && trap 'write_history' EXIT
 
-############################# VIM ALIASES (posix) ##############################
+############################# vim aliases (posix) ##############################
 if _have nvim ; then
 	alias vi="$(_path_lookup nvim)"
 elif _have vim ; then
@@ -602,7 +602,7 @@ clone42 () {
 	} || { printf '%s\n' "Could not clone repo!" ; }
 }
 
-################################ BASH PRE-EXEC #################################
+################################ bash pre-exec #################################
 if [ ! -f "${HOME}"/.bash-preexec.sh ] ; then
 	curl -sfkSL "https://raw.githubusercontent.com/rcaloras/bash-preexec/master/bash-preexec.sh" -o "${HOME}"/.bash-preexec.sh
 fi
@@ -634,7 +634,7 @@ precmd() {
 	fi
 }
 
-#################################### PROMPT ####################################
+#################################### prompt ####################################
 GIT_PS1_SHOWDIRTYSTATE='1'
 GIT_PROMPT='1'
 if [ ! -f "${HOME}"/git-prompt.sh ] && [ "${GIT_PROMPT-}" -eq "1" ] ; then
@@ -679,7 +679,7 @@ fi
 # Show shell level
 # PS1='[${SHLVL}] '"${PS1}"
 
-# ##################################### AOC ######################################
+# ##################################### aoc ######################################
 AOC_DIR="${HOME}/projects/aoc" # remember to change this to whatever your AOC directory is
 alias aos='< in.txt python3 solution.py'
 alias aot='< test.txt printf '\033[34m' ;  python3 solution.py ; printf '\033[m''
@@ -790,7 +790,7 @@ aocload () {
 	tmux send-keys "nvim './solution.py'" ENTER
 }
 
-############################## TERMINAL SETTINGS ###############################
+############################## terminal settings ###############################
 tabs -4
 set -o emacs
 _have lesspipe && eval "$(SHELL=/bin/sh lesspipe)"
@@ -802,7 +802,10 @@ _have xset && 2>/dev/null xset r rate 200 60
 # Disable bell
 _have xset && 2>/dev/null xset -b
 
-################################# COMPLETIONS ##################################
+################################# completions ##################################
 complete -F _command vimw
+complete -C backup_dir backup_dir
+complete -C backup_file backup_file
 
+################################### sources ####################################
 _source_if "${HOME}/.userbashrc"
diff --git a/.local/sbin/backup_dir b/.local/sbin/backup_dir
index 00ba454..d8ae020 100755
--- a/.local/sbin/backup_dir
+++ b/.local/sbin/backup_dir
@@ -1,18 +1,57 @@
 #! /bin/sh -
-# Depends on GNU cp, basename, log.err
+# Depends on GNU cp, log.err
 
-[ "${#}" -ne "2" ] && { log.err "Usage: backup_dir BACKUP_DIR DIR" ; exit 1 ; }
+############################### completion start ###############################
+options='--no-chattr --no-sudo'
+if [ -n "${COMP_LINE}" ] ; then
+ if [ "${1}" = "${3}" ] && [ ! "${2#-}" = "${2}" ] ; then
+  for option in $options ; do
+   case "${option}" in
+    "${2}"*) printf '%s\n' "${option}" ;;
+   esac
+  done
+ elif [ "${2#-}" = "${2}" ] ; then
+	 find "$(dirname -- "${2}")" -mindepth 1 -maxdepth 1 -path "$(dirname -- "${2}")/$(basename -- "${2}")*"
+ fi
+ exit
+fi
+################################ completion end ################################
+
+############################ argument parsing start ############################
+no_chattr=0
+no_sudo=0
+while : ; do
+	case "${1}" in
+		--no-chattr|-c) no_chattr=1 ;;
+		--no-sudo|-s) no_sudo=1 ;;
+		-*) log.err "Invalid option argument: '${1}'" ; exit 1 ;;
+		*) break ;;
+	esac
+	shift
+done
+
+test "${#}" -ne "2" && { log.err "Usage: backup_dir [--no-chattr] [--no-sudo] BACKUP_DIR DIR" ; exit 1 ; }
 
 backupdir="${1:-${HOME}/backups}"
 srcdir="${2}"
+############################# argument parsing end #############################
+
+if [ "${no_sudo}" = "1" ] ; then
+	sudo_cmd=""
+else
+	sudo_cmd="sudo --"
+fi
+
 backupname="$(basename -- "$srcdir")"
 
 [ -d "${srcdir}" ] || { log.err "Directory '${srcdir}' does not exist" ; exit 2 ; }
 [ -d "${backupdir}" ] || mkdir -p -- "${backupdir}" || { log.err "Backup Directory '${backupdir}' couldn't be created" ; exit 3 ; }
 
-if [ -e "${backupdir}/${backupname}" ]; then
-	chattr -i "${backupdir}/${backupname}" || { log.err "Can't chattr -i '${backupdir}/${backupname}'" ; exit 4 ; }
+if [ -e "${backupdir}/${backupname}" ] && [ "${no_chattr}" = "0" ] ; then
+	$sudo_cmd chattr -i "${backupdir}/${backupname}" || { log.err "Can't chattr -i '${backupdir}/${backupname}'" ; exit 4 ; }
 fi
 tar --backup=t -cvzf "${backupdir}/${backupname}" "${srcdir}" || { log.err "Can't tar --backup=t -cvzf '${backupdir}/${backupname}' '${srcdir}'" ; exit 5 ; }
 
-find "${backupdir}" -mindepth 1 -exec chattr +i {} + || { log.err "Can't chattr +i some files" ; exit 6 ; }
+if [ "${no_chattr}" = "0" ] ; then
+	$sudo_cmd find "${backupdir}" -mindepth 1 -exec chattr +i {} + || { log.err "Can't chattr +i some files" ; exit 6 ; }
+fi
diff --git a/.local/sbin/backup_file b/.local/sbin/backup_file
index a930d85..e77d370 100755
--- a/.local/sbin/backup_file
+++ b/.local/sbin/backup_file
@@ -1,18 +1,57 @@
 #! /bin/sh -
-# Depends on GNU cp, basename, log.err
+# Depends on GNU cp, log.err
 
-[ "${#}" -ne "2" ] && { log.err "Usage: backup_dir BACKUP_DIR FILE" ; exit 1 ; }
+############################### completion start ###############################
+options='--no-chattr --no-sudo'
+if [ -n "${COMP_LINE}" ] ; then
+ if [ "${1}" = "${3}" ] && [ ! "${2#-}" = "${2}" ] ; then
+  for option in $options ; do
+   case "${option}" in
+    "${2}"*) printf '%s\n' "${option}" ;;
+   esac
+  done
+ elif [ "${2#-}" = "${2}" ] ; then
+	 find "$(dirname -- "${2}")" -mindepth 1 -maxdepth 1 -path "$(dirname -- "${2}")/$(basename -- "${2}")*"
+ fi
+ exit
+fi
+################################ completion end ################################
+
+############################ argument parsing start ############################
+no_chattr=0
+no_sudo=0
+while : ; do
+	case "${1}" in
+		--no-chattr|-c) no_chattr=1 ;;
+		--no-sudo|-s) no_sudo=1 ;;
+		-*) log.err "Invalid option argument: '${1}'" ; exit 1 ;;
+		*) break ;;
+	esac
+	shift
+done
+
+test "${#}" -ne "2" && { log.err "Usage: backup_dir [--no-chattr] [--no-sudo] BACKUP_DIR DIR" ; exit 1 ; }
 
 backupdir="${1:-${HOME}/backups}"
 srcfile="${2}"
+############################# argument parsing end #############################
+
+if [ "${no_sudo}" = "1" ] ; then
+	sudo_cmd=""
+else
+	sudo_cmd="sudo --"
+fi
+
 backupname="$(basename -- "$srcfile")"
 
 [ -f "${srcfile}" ] || { log.err "Regular File '${srcfile}' does not exist" ; exit 2 ; }
 [ -d "${backupdir}" ] || mkdir -p -- "${backupdir}" || { log.err "Backup Directory '${backupdir}' couldn't be created" ; exit 3 ; }
 
-if [ -e "${backupdir}/${backupname}" ]; then
-	chattr -i "${backupdir}/${backupname}" || { log.err "Can't chattr -i '${backupdir}/${backupname}'" ; exit 4 ; }
+if [ -e "${backupdir}/${backupname}" ] && [ "${no_chattr}" = "0" ] ; then
+	$sudo_cmd chattr -i "${backupdir}/${backupname}" || { log.err "Can't chattr -i '${backupdir}/${backupname}'" ; exit 4 ; }
 fi
 cp --backup=t "${srcfile}" "${backupdir}/${backupname}" || { log.err "Can't cp --backup=t '${srcfile}' '${backupdir}/${backupname}'" ; exit 5 ; }
 
-find "${backupdir}" -mindepth 1 -exec chattr +i {} + || { log.err "Can't chattr +i some files" ; exit 6 ; }
+if [ "${no_chattr}" = "0" ] ; then
+	$sudo_cmd find "${backupdir}" -mindepth 1 -exec chattr +i {} + || { log.err "Can't chattr +i some files" ; exit 6 ; }
+fi