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grep any number of spaces

 
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# 1  
Old 09-02-2010
grep any number of spaces
which one of the following is the correct expression to ignore line with multiple spaces after any string

Code:
cat file | grep -v "xyz *$"

or
Code:
cat file | grep -v "xyz[ ]*$"


do i need "[ ]*" to specify the sapce or " *" will do?
Last edited by Scott; 09-02-2010 at 04:46 AM.. Reason: Please use code tags
# 2  
Old 09-02-2010
Hi.

Neither of them?

Can the statement:
Quote:
ignore line with multiple spaces after any string
Be simplified to:
Quote:
ignore line with consecutive spaces
?

If so:
Code:
grep -v "  " file # two spaces, no need for cat

" *" means zero or more spaces. In extended regular expressions " +" means one or more spaces. Neither of these seems to fit your requirement.
# 3  
Old 09-02-2010
Quote:
Originally Posted by manishma71
which one of the following is the correct expression to ignore line with multiple spaces after any string

Code:
cat file | grep -v "xyz *$"

or
Code:
cat file | grep -v "xyz[ ]*$"


do i need "[ ]*" to specify the sapce or " *" will do?
Try:
Code:
grep -v "[ *$]" file

 
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