# nextclade > Bioinformatics tool for virus genome alignment, clade assignment and qc checks. > More information: . - Align sequences to user provided reference, outputting the alignment to a file: `nextclade run {{path/to/sequences.fa}} {{[-r|--input-ref]}} {{path/to/reference.fa}} {{[-o|--output-fasta]}} {{path/to/alignment.fa}}` - Create a TSV report, auto-downloading the latest dataset: `nextclade run {{path/to/fasta}} {{[-d|--dataset-name]}} {{dataset_name}} {{[-t|--output-tsv]}} {{path/to/report.tsv}}` - List all available datasets: `nextclade dataset list` - Download the latest SARS-CoV-2 dataset: `nextclade dataset get {{[-n|--name]}} sars-cov-2 {{[-o|--output-dir]}} {{path/to/directory}}` - Use a downloaded dataset, producing all outputs: `nextclade run {{[-D|--input-dataset]}} {{path/to/dataset_dir}} {{[-O|--output-all]}} {{path/to/output_dir}} {{path/to/sequences.fasta}}` - Run on multiple files: `nextclade run {{[-d|--dataset-name]}} {{dataset_name}} {{[-t|--output-tsv]}} {{path/to/output_tsv}} -- {{path/to/input_fasta_1 path/to/input_fasta_2 ...}}` - Try reverse complement if sequence does not align: `nextclade run --retry-reverse-complement {{[-d|--dataset-name]}} {{dataset_name}} {{[-t|--output-tsv]}} {{path/to/output_tsv}} {{path/to/input_fasta}}`