diff --git a/home_external/.bash_aliases b/home_external/.bash_aliases
index a108d99..efa021b 100644
--- a/home_external/.bash_aliases
+++ b/home_external/.bash_aliases
@@ -19,6 +19,7 @@ alias rsync_backup="rsync $DEFAULT_RSYNC --checksum --times --group --owner --de
 alias rsync_move="rsync $DEFAULT_RSYNC --checksum --remove-source-files"
 alias rsync_update="rsync $DEFAULT_RSYNC --update --times"
 alias rsync_copy="rsync $DEFAULT_RSYNC --ignore-times"
+alias copy_link='cp --no-dereference --recursive --preserve=all --link' # not --force to make it optional
 alias off='systemctl poweroff'
 alias nnn='nnn -dHrR'
 alias nn='n -dHrR'
@@ -29,6 +30,19 @@ alias mountdrive='udisksctl mount -b'
 alias unmountdrive='udisksctl unmount -b'
 alias fssizes='df -kh --output=size,used,avail,pcent,target | sort -hr'
 alias dirsizes='du -kh --apparent-size --max-depth=1 | sort -hr'
+# sed -ie 's/Beispiel/Ersetzung/' *.xml
+# sed -Eie 's/(Beispiel)/\1Anhang/' *.xml
+
+
+rsyncLink() {
+   source=$1;
+   linkSource="$(realpath $source)";
+   linkSource=${linkSource%/}; # cut off trailing "/"
+   shift;
+   dest=$1;
+   shift;
+   rsync $DEFAULT_RSYNC --one-file-system --link-dest=$linkSource $source $dest $*;
+}
 
 
 updateSystem() {
@@ -77,7 +91,7 @@ execute() {
 # executes command and notifies upon success or failure
 executeAndNotify () {
    dir="$(pwd)";
-   dir=${dir##*/};
+   dir=${dir##*/}; # cut off previous path (/path/to/foo.txt -> foo.txt)
    if [[ -n "$2" ]]; then
       winLog=$2;
    else