8 comments

• 

  Anonymous

  5 years ago

  From man grep:
  
  <ul id="quote">The caret ^ and the dollar sign $ are metacharacters that respectively
  match the empty string at the beginning and end of a line.</ul>
  Not "$=beginning of line, ^=end of line"
  reply
• 

  qmchenry

  5 years ago

  Great catch! You are absolutely correct. The recipe has been repaired. Thank you for helping to improve Tech-Recipes.
  
  Quinn
  reply
• 

  raxxal

  5 years ago

  By the way, if you want to see the $ sign, in vi enter :set list
  also, in cat do the following: cat -vet
  
  Raxxal
  reply
• 

  Anonymous

  4 years ago

  .. or, quicker, grep . <filename>
  reply
• 

  Luis

  3 months ago

  awsome
  reply
• 

  Anonymous

  1 year ago

  This wasn't working for me using Cygwin, then I realised that the file I was looking at had Windows line endings. There are any number of solutions to this, but the one I chose was to pipe through tr -d "r" before piping through grep. Then it worked like a charm. -- Richie Hindle, richie@entrian.com
  reply
• 

  Anonymous

  1 year ago

  The easiest way to remove blank lines from a file is to use a sed statement. The following syntax removes the blank lines.
  
  # cat my_file | sed /^$/d
  reply
• 

  Jadu Saikia

  5 months ago

  All ways together, :-)
  
  $ grep -v '^$' file
  $ grep '.' file
  $ sed '/^$/d' file
  $ sed -n '/^$/!p' file
  $ awk NF file
  $ awk '/./' file
  
  unstableme.blogspot.com
  reply