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Top Forums UNIX for Dummies Questions & Answers using sed or grep to find exact match of text Post 302249807 by ghostdog74 on Wednesday 22nd of October 2008 06:39:15 AM
Old 10-22-2008
Quote:
Originally Posted by risk_sly
Hi,

Can anyone help me with the text editing I need here. I have a file that contains the following lines for example: (line numbers are for illustration only)

1 Hello world fantasy.
2 Hello worldfuntastic.
3 Hello world wonderful.

I would like to get all those lines of text that contains the word "world" without anything after it. Meaning, I would like to have lines 1 and 3, line 2 should not be included because it contains "worldfuntastic", no space between.

1 Hello world fantasy.
3 Hello world wonderful

The problem is, there are some lines that use TAB to separate words like line 3. When I use grep "world " <filename>, this will get all lines of text with the word "world" and space after it but not those with TAB, i.e. the results would only be:
1 Hello world fantasy

line 3 is not included because "world" and "wonderful" are separated by TAB. Any suggestions, please?

if you want to grab whole words, the basic logic is to go through each word, and check against what you want to find using equality "==" operator
Code:
awk '{
 for ( i=1;i<=NF;i++){
  if ( $(i) == "world"){
   print $0
  } 
 }
}
' file

 

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LP(1)							      General Commands Manual							     LP(1)

NAME
lp, lpd - copy a file to the line printer SYNOPSIS
lp [file ...] DESCRIPTION
Each file argument to lp is send to the line printer to be printed. Standard input is read and printed if there are no arguments. Lp exe- cutes /usr/lib/lpd with each file as input. Lpd puts the file in /usr/spool/lpd and starts printing the jobs on /dev/lp unless another lpd is already running. If lpd finds any character in the input that it doesn't know how to handle then it will print the rest of the file without any special treatment. This also means that no formfeed is sent after the file has been printed to force out the page. Lpd simply assumes that you know what you are doing. (dumb, eh?) Note: Don't do anything with a file until it is printed, lpd only makes a copy of a file in the spool directory when it is not world read- able. If it can be read then it is printed directly. FILES
/usr/spool/lpd/jobXXXXX Information about a job. /usr/spool/lpd/tmpXXXXX Associated file to be printed. /etc/termcap The 'lp' entry describes the printer by the "li#" and "co#" fields. By default 66 lines (li#66), and 80 columns (co#80). SEE ALSO
lp(4), termcap(5), termcap(7). BUGS
Not spooling a world readable file may not be such a smart idea. A formfeed should be printed and the printer reset after a job full of escape codes, but this may cost paper. No banner page. AUTHOR
Kees J. Bot (kjb@cs.vu.nl) LP(1)
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