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Shell Programming and Scripting

Spaces between the lines

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# 1  
Old 05-06-2014
Blade Spaces between the lines
How to get spaces between the two lines

I have file

File1
A.txt
B.txt

File2
C.txt
D.txt

Doing cat and appending to one file i.e file3

when i was doing append i need output like below


File3

File1
A.txt
B.txt

File2
C.txt
D.txt


see above i need space between cotent of files
# 2  
Old 05-06-2014
Longhand purely from the command line; OSX 10.7.5 default bash terminal...
Assumption:- "file1" and "file2" is not needed in the appended final file.
Code:
Last login: Tue May  6 21:11:18 on ttys000
AMIGA:barrywalker~> echo "A.txt
> B.txt" > /tmp/file1
AMIGA:barrywalker~> echo "C.txt
> D.txt" > /tmp/file2
AMIGA:barrywalker~> cat < /tmp/file1 > /tmp/file3
AMIGA:barrywalker~> echo "" >> /tmp/file3
AMIGA:barrywalker~> cat < /tmp/file2 >> /tmp/file3
AMIGA:barrywalker~> cat < /tmp/file3
A.txt
B.txt

C.txt
D.txt
AMIGA:barrywalker~> _

# 3  
Old 05-06-2014
try also:
Code:
awk 'FNR==1 {print ""}; 1' File1 File2 > File3

# 4  
Old 05-08-2014
You could also create a dummy file and include that:-
Code:
echo > /tmp/dummy
cat file1 /tmp/dummy file2

Note that touch /tmp/dummy or just >/tmp/dummywill create an empty file and this will not work. You need a file to include the carriage return. Depending on your OS, you may need to use print >/tmp/dummy instead.



Robin
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