What is the reason why the exec method of NodeJS's child_process module is stuck?

such a simple piece of code

   

has been stuck like this, who knows why? Or give me some ideas?

Mar.21,2021

is that your main program did not quit. Add process.exit ()

to the last line.
   

< hr >

can you guys tell me why?

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1eb5fc1-2599.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1eb5fc1-2599.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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