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Combining lines in to one line

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# 1  
Old 12-14-2012
Question Combining lines in to one line
Hi Friends,

I have a file1.txt

Code:
1001 jkilo yrhfm 
200056 jhdf rjhwjkrh
3+u8jk5h3 uru ehjk 
1002 jkfhk hfjkd 
2748395 fdjksfh hefjkh
3hdfk ejkh kjhjke

In the above if you see the firt charcter of each line mentioned in red has a pattern .
I need to create another file where , the first 3 lines comes to the one line, next 3 lines to nxt line ..so on..

Expected output :

Code:
 
001 jkilo yrhfm 00056 jhdf rjhwjkrh+u8jk5h3 uru ehjk 
002 jkfhk hfjkd 748395 fdjksfh hefjkhhdfk ejkh kjhjke

Plz help
# 2  
Old 12-14-2012
Code:
$ nawk 'NR%3!=0{printf("%s ",substr($0,2,length))}NR%3==0{printf("%s\n",substr($0,2,length))}' input.txt
001 jkilo yrhfm  00056 jhdf rjhwjkrh +u8jk5h3 uru ehjk 
002 jkfhk hfjkd  748395 fdjksfh hefjkh hdfk ejkh kjhjke

This User Gave Thanks to itkamaraj For This Post:
i150371485
# 3  
Old 12-14-2012
Another approach:
Code:
awk '{ORS=NR%3?FS:RS}{print substr($0,2)}' file

# 4  
Old 12-14-2012
@Itkamaraj: Thanks for the reply. Thank you so much.. it works as expected Could you exaplain the code ?
# 5  
Old 12-14-2012
NR%3!=0 NR is number of processing line. If the awk command reads the first line, then value is 1, if it read 2nd line, then NR is 2..so on..

so, we are checking whether NR is multiple of three or not.

if not, just print the record.
if yes, print the record with new line.

substr($0,2,length) used to extract the words from the 2nd character of the line
# 6  
Old 12-14-2012
Quote:
Originally Posted by itkamaraj

substr($0,2,length) used to extract the words from the 2nd character of the line
The use of the length function is superfluous in this case.
This User Gave Thanks to Franklin52 For This Post:
itkamaraj
# 7  
Old 12-14-2012
yes.. i saw your comment.. thanks for notifying...
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