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Shell Programming and Scripting

Moving next 2 lines contents to previous lines

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# 1  
Old 04-25-2007
Moving next 2 lines contents to previous lines
My input file is
aaa
bbb
ccc
a1a
b1b
c1c
a2a
b2b
c2c

I want the output file to look like that:
aaa,bbb,ccc
a1a,b1b,c1c
a2a,b2b,c2c

How do I achieve this ?
# 2  
Old 04-25-2007
Code:
paste -d"," - - - file

# 3  
Old 04-25-2007
Moving next 2 lines to previous line.
Hi anbu23,

I tried ...but when I execute the paste command at shell prompt it gets stuck up for infinite time...and no outputs is created...

I am using the following :
home/myscripts > paste -d"," - - - a > b

Thanks
# 4  
Old 04-25-2007
Quote:
Originally Posted by Amruta Pitkar
Hi anbu23,

I tried ...but when I execute the paste command at shell prompt it gets stuck up for infinite time...and no outputs is created...

I am using the following :
home/myscripts > paste -d"," - - - a > b

Thanks
Try this
Code:
paste -d"," - - - <  a > b

# 5  
Old 04-25-2007
a crude awk implementation
Code:
awk ' {     
              arr[NR] = $0","
              if (NR%3==0) { 
                     sub("," , "",arr[NR])                     
                     for (i in arr) printf arr[i] 
                     print ""
                     delete arr
              }            
       }      
' "file"

# 6  
Old 04-25-2007
Moving next 2 lines to previous line.
Hello anbu23

It worked...thanks.

Amruta
# 7  
Old 04-25-2007
Quote:
Originally Posted by anbu23
Code:
paste -d"," - - - file


That should be:

Code:
paste -d"," - - - < file

Or:

Code:
printf "%s,%s,%s\n" $( cat < file )

Which, in bash and ksh, can be shortened to:

Code:
printf "%s,%s,%s\n" $( < file )
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