sacct, scancel, srun: add page (#4600)

pages/linux/srun.md

@@ -0,0 +1,16 @@
+# srun
+
+> Create an interactive slurm job or connect to an existing job.
+> More information: <https://slurm.schedmd.com/srun.html>.
+
+- Submit a basic interactive job:
+
+`srun --pty /bin/bash`
+
+- Submit an interactive job with different attributes:
+
+`srun --ntasks-per-node={{num_cores}} --mem-per-cpu={{memory_MB}} --pty /bin/bash`
+
+- Connect to a worker node with a job running:
+
+`srun --jobid={{job_id}} --pty /bin/bash`