diff --git a/exercises/UNIX_HPC_exercise_instructions.md b/exercises/UNIX_HPC_exercise_instructions.md
index 3f5f2339708c08909c063ffe03b5f9e237297163..bc577e6710a2f212427e70c9b61b6896f8bff578 100644
--- a/exercises/UNIX_HPC_exercise_instructions.md
+++ b/exercises/UNIX_HPC_exercise_instructions.md
@@ -292,14 +292,9 @@
 2. **On the command line, loop through all fasta files starting with "ompA" using `var1`** and print the name to standard output.
    * Once you type `for` and press `ENTER`, the shell will recognise the syntax and you can continue writing the for-loop line by line. It will evaluate the whole command only after you entered `done`. 
 
-3. **In your editor, write a simple script called `copy_and_rename.sh`.** 
-
-   **Preparation:** It's easiest if you write your script locally and then transfer it via SFTP of your command line client (Termius/Notepad++) to the cluster into your `intro_to_unix` directory.
-
-   **For BBEdit users:** You can turn on syntax highlighting either by saving the file as a .sh file or by selecting "Unix Shell Script" in the drop-down menu at the very bottom (it says "Text file" by default). 
-
-   **For Notepad++ users:** You can turn on syntax highlighting by selecting "shell" in the "Language" menu. 
+3. **In VSCode, write a simple script called `copy_and_rename.sh`.** 
 
+   * Create an empty text file and save it into your `intro_to_unix` directory as `copy_and_rename.sh`.
    * In a for loop, go through all fasta files starting with "ompA". 
    * Copy each fasta file. For the name of the new copy, replace "ompA" with "outerMembraneProteinA". 
    * Run the script from within your `intro_to_unix` folder. 
@@ -439,8 +434,10 @@
 **Objective:** running software from singularity images and submitting jobs to Science Cluster
 
 >**BEFORE WE START**
-Please run the following command:
+Please run the following commands:
 ```sh
+mkdir /home/$USER/scratch/singularity_tmpdir
+echo "export SINGULARITY_TMPDIR=/home/$USER/scratch/singularity_tmpdir" >> $HOME/.bashrc
 echo "export SINGULARITY_BINDPATH=/scratch,/data,/home/$USER,/shares/amr.imm.uzh" >> $HOME/.bashrc
 source $HOME/.bashrc
 ```