Replace UNIX_HPC_cheat_sheet.md

exercises/UNIX_HPC_cheat_sheet.md

@@ -98,6 +98,13 @@ fi
 ```
 
 
+## Running Singularity containers
+Running a container called `my_software_container` that contains a command called `my_software`
+```bash
+my_software_container.sif my_software [parameters]             
+```
+
+
 <br>
 
 # SLURM Cheat Sheet