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05-22-2008
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How to join two strings together
There is a file:
!EN ih n w ey I want to join the current instance with its previous instance together, such as: previous_instance-B+current_instance, there "-B+" is fixed iterm, the file after operate look like: !EN start-B+!EN ih !EN-B+ih n ih-B+n w n-B+w ey w-B+ey what I think is we can use command awk ' {being="start";$2=${begin}-B+$1;print;begin=$1;next}' <filename > newfilename but it does not work. what command should I use? Thanks in advance Last edited by Jenny.palmy; 05-22-2008 at 08:07 PM. 
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05-22-2008
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Try...
Code:
$ cat file1
!EN
ih
n
w
ey
$ awk 'BEGIN{b="start"}{$2=b "-B+" $1;print;b=$1}' file1 > file2
$ cat file2
!EN start-B+!EN
ih !EN-B+ih
n ih-B+n
w n-B+w
ey w-B+ey
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