diff --git a/home_external/.bash_aliases b/home_external/.bash_aliases
index 8a6efc1..058ffb6 100644
--- a/home_external/.bash_aliases
+++ b/home_external/.bash_aliases
@@ -9,6 +9,7 @@ alias r='reset'
 alias ..='cd ..'
 alias refresh_bashrc='. ~/.bashrc' # alternatively: 'source ~/.bashrc'
 alias rsync_default="rsync $DEFAULT_RSYNC --checksum"
+# complete -F _rsync rsync_default # FIXME!!! works on oashi workstation (ubuntu) but not on manjaro ?!?
 alias rsync_backup="rsync $DEFAULT_RSYNC --checksum --times --group --owner --delete"
 alias rsync_move='rsync_default --remove-source-files'
 alias rsync_update="rsync $DEFAULT_RSYNC --update --times"
@@ -17,6 +18,7 @@ alias nnn='nnn -dHrR'
 alias nn='n -dHrR'
 alias finds='find $* 2>/dev/null'
 alias c='clear'
+alias sort_dirs_by_size='du --block-size=1K --human-readable --max-depth=1 | sort --human-numeric-sort --reverse' # 'du -kh --max-depth=1 | sort -hr'
 alias sd='sudo ' # alias, so sudo can use aliases: "If the last character of the alias value is a blank, then the next command word following the alias is also checked for alias expansion."