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Home > Forums > MIS/IT > Operating Systems - UNIX based > -General UNIX discussion Forum

cat multiple files but append new line between each file

thread80-1651359
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new2unix (Programmer)
10 Jun 11 11:05
Hi,

I have multiple files, say, test1.dat, test2.dat, etc.  Each file has only one record.  I tried:

cat test*.dat > final.dat

The records from each file were combined into one line instead of separate lines in the final.dat file.

How do I combined the record from each file while appending new line after each record?

Thanks,

Mike  
feherke (Programmer)
10 Jun 11 12:03
Hi

I know no way to do it with cat, so I would use AWK :

CODE

awk 'FNR==1&&NR!=1{print""}1' test*.dat > final.dat
Tested with gawk and mawk.

Alternatively you could take a look at paste, especially if yours support -s ( --serial ) and -d ( --delimiters ) switches.
 

Feherke.
http://free.rootshell.be/~feherke/

Salem (Programmer)
10 Jun 11 13:01
Maybe

CODE

for i in test*.dat ; do cat $i ; echo "" ; done > final.dat
 

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If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.

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