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Why might the below bash commands give me an error on a Jenkins JNLP slave in Kubernetes cluster? Each work on a local machine.

Error: Syntax error: redirection unexpected 

IFS='/' read -r -a branch <<< "${1}"

Error: Syntax error: "(" unexpected (expecting "}"): 

IFS='/'
branch=($1)

Environment Details

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1 Answer 1

Reset to default
1

I cannot say this is a the best answer so I do hope someone can provide a better clarification.

It seems the default shell for sh() in Jenkins is Bourne. By updating the sh() with the correct shell this allows the below usage:

sh'''#!/bin/bash
    IFS='/'
    branch=($1)
    # Use it.
'''

This doesn't resolve the the redirection error. Also I would think by updating the default shell in the image with chsh -s /bin/bash I wouldn't need to set it but I still do.

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