install kapp in ubuntu 20.04. installing ytt... main: line49 /tmp/ytt: permission denied

[davincizhao]

What steps did you take:
[A clear and concise description steps and yaml files that can be used to reproduce the problem.]
in root account: get -O- https://carvel.dev/install.sh | bash
What happened:
[A small description of the result or the yaml that was generated]
installing ytt...
main: line49 /tmp/ytt: permission denied
What did you expect:
[A description of what was expected and the yaml that should have been generated]
install kapp in ubuntu os

Anything else you would like to add:
[Additional information that will assist in solving the issue.]

Environment:
ubuntu 20.04.

• ytt version (use ytt --version): ytt failed to instal
• OS (e.g. from /etc/os-release):ubuntu 20.04.1

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[cppforlife]

(moved the issue here since it was not really related to ytt)

line 49: https://github.com/vmware-tanzu/carvel.dev/blob/b46b14ca5c2ac0988b4905ff0a37d8580875e152/static/install.sh#L49 tries to stream bits into /tmp/ytt. please verify that that's possible.

[cppforlife]

closing this. feel free to reopen.