how to fix a unix shell script to work on linux

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Autor: Josef Lowder
Data:  
Para: plug-discuss
Assunto: how to fix a unix shell script to work on linux
.
The following script used to work on my old unix system,
to remove blank lines from a text file. It no longer works
on linux, but now it gives an error message (below):

sed '/[!-~]/!d' $1


This is the error message:

sed: -e expression #1, char 7: Invalid range end

How can I fix this?


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