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# 1  
Old 08-03-2010
append line
hi Smilie

i have a file 1.txt:


Code:
XREAZM02145586k05mkkk
1azeKJLM000255
kopmjjgy
XREAZMNJK015522255521144bvfyj
XREAZM01255hhfe'yg000nnn36poigujj,jjd
nnjjjlm0025962/522

i want:

Code:
XREAZM02145586k05mkkk1azeKJLM000255kopmjjgy
XREAZMNJK015522255521144bvfyj
XREAZM01255hhfe'yg000nnn36poigujj,jjdnnjjjlm0025962/522

my code:
Code:
awk '!/^XREAZM/{ORS=""}1' 1.txt

but didn't work

thank's
# 2  
Old 08-03-2010
Hi

Code:
awk '/XREAZ/{if (x) print x;x=$0;next;}{x=x""$0;}'  file

Guru.
# 3  
Old 08-03-2010
Quote:
Originally Posted by guruprasadpr
Hi

Code:
awk '/XREAZ/{if (x) print x;x=$0;next;}{x=x""$0;}'  file

Guru.
That code fails to handle the last set of lines.
Last edited by alister; 08-03-2010 at 02:20 AM.. Reason: Deleted buggy sed proposal
# 4  
Old 08-03-2010
@alister
It does work for the input OP has provided.

However, a generic solution would be :

Code:
awk '/XREAZ/{if (x) print x;x=$0;next;}{x=x""$0;}END{print x}' file

Guru.
# 5  
Old 08-03-2010
No, it doesn't. How could it when printing is triggered by /XREAZ/ and the final line in the data does not match that pattern?

Code:
$ cat dat
XREAZM02145586k05mkkk
1azeKJLM000255
kopmjjgy
XREAZMNJK015522255521144bvfyj
XREAZM01255hhfe'yg000nnn36poigujj,jjd
nnjjjlm0025962/522
$ awk '/XREAZ/{if (x) print x;x=$0;next;}{x=x""$0;}' dat  
XREAZM02145586k05mkkk1azeKJLM000255kopmjjgy
XREAZMNJK015522255521144bvfyj

# 6  
Old 08-03-2010
How about

Code:
$ nawk '/^XREA/ {printf "\n%s", $0;next} {printf "%s",$0}' file

Only problem is it prints a newline at the beginning.
# 7  
Old 08-03-2010
@alister..
oops...My mistake it was..

Guru.
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