linux - lsof unable to find the PID of file which gets updated using while loop

Question

Using lsof, I'm unable to get the PID of the file which gets updated using while loop.

┌─[stalin@testbox] - [/tmp] - [Mon Jan 11, 18:50]
└─[$]> sh hostname.sh&
[1] 75634
┌─[stalin@testbox] - [/tmp] - [Mon Jan 11, 18:50]
└─[$]> cat /tmp/hostname.txt
testbox
┌─[stalin@testbox] - [/tmp] - [Mon Jan 11, 18:50]
└─[$]> lsof /tmp/hostname.txt
┌─[stalin@testbox] - [/tmp] - [Mon Jan 11, 18:50]
└─[$]> cat hostname.sh
#!/bin/zsh
while sleep true; do echo $(hostname) > /tmp/hostname.txt; done
┌─[stalin@testbox] - [/tmp] - [Mon Jan 11, 18:50]
└─[$]> uname -a
Darwin testbox 19.5.0 Darwin Kernel Version 19.5.0: Tue May 26 20:41:44 PDT 2020; root:xnu-6153.121.2~2/RELEASE_X86_64 x86_64

Answer 1

等待大神答复