Re: how to fix a unix shell script to work on linux

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著者: Matrix Mole
日付:  
To: Main PLUG discussion list
題目: Re: how to fix a unix shell script to work on linux
Josef Lowder wrote:
| .
| 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?


If we're talking lines that have no content in them whatsoever then the
following should work:

sed -e '/^$/d' $1

If we're talking lines that have at least a space on them but nothing
else, then I'd think should work:

sed -e '/^\ *$/d' $1

I haven't had a chance to test these, but I think that should work (and
might even work on a unix platform as well as linux).

Matrix Mole
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