Common Commands Cheat Sheet

Quick reference for the most frequently used commands on the HPC cluster.

Connecting

SSH:

ssh username@orion-login.hpc.msstate.edu

Open OnDemand:

Navigate to: https://orion-ood.hpc.msstate.edu

Features: Dashboard, Jobs, Files, Shell Access

ssh username@hercules-login.hpc.msstate.edu

Open OnDemand:

Navigate to: https://hercules-ood.hpc.msstate.edu

Features: Dashboard, Jobs, Files, Shell Access

ssh username@ptolemy-login.arc.msstate.edu

Open OnDemand:

Navigate to: https://ptolemy-ood.arc.msstate.edu

Features: Dashboard, Jobs, Files, Shell Access

ssh username@atlas-login.hpc.msstate.edu

Open OnDemand:

Navigate to: https://atlas-ood.hpc.msstate.edu

Features: Dashboard, Jobs, Files, Shell Access

ssh username@morrill-login.hpc.msstate.edu

Open OnDemand:

Navigate to: https://morrill-ood.hpc.msstate.edu

Features: Dashboard, Jobs, Files, Shell Access


File Operations

# List files
ls -la

# Copy files
cp source destination

# Move/rename files
mv oldname newname

# Remove files
rm filename

# Create directory
mkdir dirname

# Check disk usage
du -sh dirname

Job Submission (SLURM)

# Submit a job
sbatch job_script.sh

# Check queue
squeue --user $USER

# Cancel a job
scancel job_id

# Check job status
sacct -u $USER -n -o jobid,state,exitcode

Modules

# List available modules
module avail

# Load a module
module load python

# Unload a module
module unload python

# Show loaded modules
module list