script to remove blank lines ?

[venu]

hi all shell scripters !

if in a file I have say 10 lines and some of them are blank lines ,how do i
remove the blank lines ?

cherio
venu

Re: script to remove blank lines ?

[Stephan Engelke]

Hi,

On Tue, Aug 10, 1999 at 12:25:03PM +0530, venu wrote:

 if in a file I have say 10 lines and some of them are blank lines ,how do i
 remove the blank lines ?

grep -v ^$ filename

This gets you all lines with something between the line's beginning (^)
and its end ($).  Or rather without nothing between beginning and
end (-v is grep's negation option).

So long -- Stephan
-- 
Stephan Engelke[EMAIL PROTECTED]
 *** Plug-and-Play is really nice, unfortunately it only works 50% of
 the time.  To be specific the Plug almost always works. ***

Re: script to remove blank lines ?

[venu]

hey... that was quick !! thanks stephan...

Stephan wrote:...

grep -v ^$ filename

This gets you all lines with something between the line's beginning (^)
and its end ($).  Or rather without nothing between beginning and
end (-v is grep's negation option).



i did it like this uing awk.

cat m | awk '$1 != { print  $1 }'

but i believe ur method would be faster !!

thanks
venu

Re: script to remove blank lines ?

[Michael Merten]

On Tue, Aug 10, 1999 at 12:25:03PM +0530, venu wrote:
 hi all shell scripters !
 
 if in a file I have say 10 lines and some of them are blank lines ,how do i
 remove the blank lines ?
 
 cherio
 venu
 
Well, one way would be to 'cat file | tr -s '\n'  newfile',
IIRC.

Mike

[Private mail welcome, but no need to CC: me on list replies.]

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avoid jackrabbits.  For the second 100 miles you hit whatever
jackrabbits get in the way.  After that you chase off into the brush
after them.

RE: script to remove blank lines ?

[Wim Kerkhoff]

cat --help

cat -s temp  temp1

This will reduce multiple blank lines to 1 blank line, see the other responses
if you want that line gone too.  If you have a long file with a page of blank
space, cat -s README would fix that for you.   

On 10-Aug-99 venu wrote:
 hi all shell scripters !
 
 if in a file I have say 10 lines and some of them are blank lines ,how do i
 remove the blank lines ?
--
 Wim Kerkhoff  
 [EMAIL PROTECTED]
 www.canadianhomes.net/wim 
 ICQ: 23284586