main.nf is

#!/usr/bin/env nextflow

params.input = ''
tchan = Channel.fromFile(params.input)


I have a.bam, b.bam and c.bam

I run:

nextflow run main.nf --input *bam

But it only prints a.bam

According to the documentation, wildcard character it is interpreted as a glob path matcher

What am I doing wrong?

Thank you

  • 2
    $\begingroup$ Shell expands wildcards, try ls * vs ls "*" . $\endgroup$
    – pditommaso
    Apr 1, 2020 at 4:49

1 Answer 1


got it!

I should run:

nextflow run main.nf --input "*bam"

instead of

nextflow run main.nf --input *bam

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