Batch files wait for GUI applications to terminate. The interactive shell does not. Replace 

wperl -e"sleep 10"

[download]
with 
start wperl -e"sleep 10"

[download]

To get the interactive behaviour in a batch file.

In reply to Re: wperl in cmd file not returning immediately by ikegami
in thread wperl in cmd file not returning immediately by Pascal666

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