Duplicate lines in a file


 
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# 1  
Duplicate lines in a file

I have a file with following data

A
B
C

I would like to print like this n times(For eg:5 times)
A
B
C
A
B
C
A
B
C
A
B
C
A
B
C
A
B
C
# 2  
I'm a newbie myself, and this is probably not the best way.. but you could do, for instance:

cat yourfile yourfile > newfile (to print every line in yourfile twice; cat yourfile yourfile yourfile to print them three times etc.).
# 3  
But if looping need to occur for large no of times it will not be best suited.Anyhow thanks for your comments
# 4  
In the same logic as bobylapointe:
Code:
~/unix.com$ n=5; { while [ $((n-=1)) -ge 0 ]; do cat file; done;} > newfile

Replace n=5 to n=whatnumberyouwant
newfile will contain the data of your file repeated n times
# 5  
in bash,

Code:
for i in {1..5}; do cat filename.txt ; done

# 6  
While executing ~/unix.com$ n=5; { while [ $((n-=1)) -ge 0 ]; do cat xx; done;} > xxx
i get the following error
Variable syntax
My shell is csh
# 7  
Quote:
Originally Posted by nsuresh316
My shell is csh
That's the type of information that should always be included in the original post, especially since most people will provide posix (bourne like) sh solutions.

Regards,
Alister
 

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