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Shell script: Remove blank lines

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# 1  
Old 02-25-2009
Shell script: Remove blank lines
Hi gurus,

I have this file with blank lines in it.
How do i remove them in shell?
I tried these commands but not working:
sed '/^ *$/d'
or
sed '/^$/d'
Anybody has a better idea pls?

Also there are lines which starts with a single space, how do we remove the space in those lines?
Thanks.
# 2  
Old 02-25-2009
sed '/^$/d'
Should have worked, maybe line not so blank after all...
# 3  
Old 02-25-2009
Quote:
Originally Posted by vbe
sed '/^$/d'
Should have worked, maybe line not so blank after all...
To see exactly what's in the file, try this:

Code:
od -c file_name

Maybe there are non-printable characters.
# 4  
Old 02-25-2009
or. . . . .

Code:
grep "[!-~]" file1 > file2

only grabs lines with SOMETHING ASCII in there other than just a space.
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