Update slurm-job-submission-and-execution.md

docs.it4i/general/slurm-job-submission-and-execution.md

@@ -111,6 +111,9 @@ $ sbatch script.sh
 ```
 Path to script.sh (relative or absolute) should be given if job script is in different location than job working directory.
 
+By default, job output is stored in a file called slurm-JOBID.out and contains both job standard output and error output.
+This can be changed using sbatch options `--output` (shortly `-o`) and `--error` (shortly `-e`).
+
 Example output of the job:
 
 ```shell