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Shell Programming and Scripting

insert one file into middle of another file

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# 1  
Old 03-07-2008
Java insert one file into middle of another file
how to insert one file into another file not by concatenating as usual done.
file1
A B
C D
E F
G H
I J
K L

file2
23455
33444
33334
33345


Output shud be
23455
A B
C D
33444
E F
G H
33345
I J
K L
# 2  
Old 03-07-2008
probably an easier way than this, but it does work :

Code:
#  paste -s -d "\t\n" file1 | paste file2 - | tr "\t" "\n"
23455
A B
C D
33444
E F
G H
33334
I J
K L
33345

# 3  
Old 03-07-2008
also - can use cat for legibility:

Code:
#  cat file1 | paste - - | paste file2 - | tr "\t" "\n"

does same as 1st ans..
# 4  
Old 03-07-2008
33334
I J
K L
33345

[/CODE][/QUOTE]


Thanks.....
Last edited by cdfd123; 03-07-2008 at 08:05 AM.. Reason: just thanks
# 5  
Old 03-07-2008
Code:
awk 'FNR==NR{ a[FNR]=$0;next }
{ 
  print $0
  print a[FNR+l]
  l++
  print a[FNR+l]
}
' file file1

output
Code:
# ./test.sh
23455
A B
C D
33444
E F
G H
33334
I J
K L
33345

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