[olug] Unix Tip: I SED BLANK

[Brian Wiese]

I was just about to ask Brian for the past couple of weeks... what
happened to UGU?  I like it. =)  I think it goes along well with OLUG, and
saves me yet _another_ subscription to some mailing list.

On Tue, 18 Feb 2003 12:32:25 -0800 (PST)
Eric Penne <epenne at yahoo.com> wrote:

|Brian R. sent out an email a couple months ago telling people about it.
|
|
|--- Jeremy Bettis <jeremyb at hksys.com> wrote:
|> Who signed olug up for this unix tip mailing list?  I find it
|> annoying.
|> If you like it so much sign up your own email, not olug at olug.org.
|> 
|> --
|> Jeremy Bettis, Software Development Manager
|> HKS Medical Information Systems, Inc.
|> jeremyb at hksys.com
|> 
|> 
|> > -----Original Message-----
|> > From: Unix Guru Universe [mailto:listserv at ugu.com]
|> > Sent: Tuesday, February 18, 2003 1:22 PM
|> > To: olug at olug.org
|> > Subject: [olug] Unix Tip: I SED BLANK
|> > 
|> > 
|> >
|> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
|> > 
|> > 			      UNIX GURU UNIVERSE
|> > 			         UNIX HOT TIP
|> > 
|> > 			Unix Tip 1875 - February 18, 2003
|> > 
|> > 		    http://www.ugu.com/sui/ugu/show?tip.today
|> > 
|> >
|> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
|> > 
|> > 
|> > I SED BLANK
|> > 
|> > Using sed, you can remove blank lines, and
|> > lines that contain only whitespace, from a
|> > file using the following:
|> > 
|> > sed -e '/^[     ]*$/d' InputFile >OutputFile
|> > 
|> > Within the single quotes ('), the forward
|> > slashes (/) delimit the regular expression
|> > that will be interpreted by sed.  The "d"
|> > before the closing single quote, tells sed
|> > to delete any lines that match the regular
|> > expression.
|> > 
|> > Within the regular expression, the caret
|> > (^) matches the beginning of a line.
|> > The []* matches zero to many occurrences of
|> > the character list between the open bracket
|> > ([) and the close bracket (]) (in the above
|> > regular expression, you must insert a space
|> > and a tab between the brackets).  The dollar
|> > sign ($) matches the end of a line.
|> > 
|> > These three constructs together match any
|> > blank line or any line that contains only
|> > spaces and tabs (in any combination).
|> > 
|> > Since the standard operation of sed is to
|> > echo lines to stdout, all lines except blank
|> > lines (or lines that only contain whitespace)
|> > will be sent to OutputFile.
|> > 
|> > 
|> > This tip generously supported by: tim.couger at wcom.com
|> > 
|> > 
|> > 
|> >
|>
|------------------------------------------------------------------------
|> --
|> > To Subscribe:    http://www.ugu.com/sui/ugu/show?tip.subscribe
|> > To Unsubscribe:  http://www.ugu.com/sui/ugu/show?tip.unsubscribe
|> > To Submit A Tip: http://www.ugu.com/sui/ugu/show?tip.today
|> > 
|> >
|>
|========================================================================
|> ==
|> > DISCLAIMER: All UNIX HOT TIPS ARE OWNED BY THE UNIX GURU UNIVERSE
|> AND
|> ARE
|> > NOT TO BE SOLD, PRINTED OR USED WITHOUT THE WRITTEN CONSENT OF THE
|> UNIX
|> > GURU UNIVERSE. ALL TIPS ARE "USE AT YOUR OWN RISK". UGU  ADVISES
|> THAT
|> > ALL TIPS BE TESTED IN A NON-PRODUCTION DEVELOPMENT ENVIRONMENT
|> FIRST.
|> > 
|> > Unix Guru Universe - www.ugu.com - tips at ugu.com - Copyright
|> 1994-2001
|> >
|>
|========================================================================
|> ==
|> > 
|> > _______________________________________________
|> > OLUG mailing list
|> > OLUG at olug.org
|> > http://lists.olug.org/mailman/listinfo/olug
|> This communication, along with any attachments, is covered by federal
|> and state law governing electronic communications and may contain
|> confidential and legally privileged information. If you are not the
|> intended recipient, you are hereby notified that any disclosure,
|> copying, distribution, or action taken in reliance on the contents of
|> these documents is strictly prohibited. If you have received this
|> information in error, please notify the sender immediately and
|> arrange for the return or destruction of these documents. You may
|> notify the sender via email (mailman at hksys.com) or via phone
|> (1-402.596.1294).
|> _______________________________________________
|> OLUG mailing list
|> OLUG at olug.org
|> http://lists.olug.org/mailman/listinfo/olug
|
|
|__________________________________________________
|Do you Yahoo!?
|Yahoo! Shopping - Send Flowers for Valentine's Day
|http://shopping.yahoo.com
|_______________________________________________
|OLUG mailing list
|OLUG at olug.org
|http://lists.olug.org/mailman/listinfo/olug
|


  Brian Wiese | bwiese at cotse.com | aim: unolinuxguru
------------------------------------------------------
  GnuPG/PGP key 0x1E820A73 | "FREEDOM!" - Braveheart 
------------------------------------------------------  
This is not about Napster or DVDs. It's about your Freedom.
  I'll see your DMCA and raise you a First Amendment.
              http://www.anti-dmca.org