Question

Merge two or more files into one file.

Asked by: RND2006

Can you please provide me with a shell script that does the following task?

In a given file path location there may be one or more text files with different
file names but with the same column headers and layout.

For example File1 contains data like;

COLUMN1 COLUMN2 COLUMN3 COLUMN4
12345,2222,121,J.Asobia
32311,,12111,Thomas Cook

File2 contains data like;

COLUMN1 COLUMN2 COLUMN3 COLUMN4
12345,2222,121,A.Dewnski
32311,,12111,King Street

And so on...

All these files needs to be consolidated into one file File3 without the column headers.

12345,2222,121,J.Asobia
32311,,12111,Thomas Cook
12345,2222,121,A.Dewnski
32311,,12111,King Street

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Asked On
2009-09-22 at 15:02:01ID24753242
Tags

UNIX Shell Script

Topic

KornShell (ksh)

Participating Experts
2
Points
500
Comments
9

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Answers

 

by: omarfaridPosted on 2009-09-22 at 15:06:19ID: 25398068

try

cat file1 file2 file3 > newfile

If you are not sure about their number then you can do

cd /path/to/dir
cat file* > newfile

 

by: cakuzoPosted on 2009-09-23 at 01:00:24ID: 25400806

e.g.

./consolidate.sh newfile.csv file*

will consolidate file1 file2 file3 into newfile.csv with the header once.

#!/usr/bin/ksh
newfile="${1}"
 
if [ -z ${newfile} ]; then
  echo "Usage: $(basename ${0}) NEWFILE FILES..."
  exit 1
fi
 
shift
file1="${1}"
files="${@}"
 
head -n1 ${file1} > ${newfile}
 
for i in ${files}; do
  tail -n+2 ${i} >> ${newfile}
done

                                              
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by: RND2006Posted on 2009-09-23 at 07:09:59ID: 25403213

Thanks a lot.

You guys are great as always!

I am testing and shall get back with you.

 

by: RND2006Posted on 2009-09-23 at 07:37:17ID: 25403568

I am sorry as below was not my initial request.

I will not know the file names and there may be one or more files in a specific file location (which I know).

The shell script needs to pick up any file/files that are there in a specific file path location and merge
all the file/files into a file name "TAK123.txt".

Please help me with the shell script.

Thank you.

 

by: cakuzoPosted on 2009-09-23 at 08:37:56ID: 25404441

You can simply use my above script like  this

./consolidate.sh TAK123.txt path/to/files/* path/to/files2/* other/path/glob* yet/another/TAK*.txt

 

by: RND2006Posted on 2009-09-23 at 08:49:52ID: 25404588

Please let me try.

THANKS A LOT!!!

 

by: RND2006Posted on 2009-09-23 at 10:03:46ID: 25405400

cakuzo:
I am really sorry but this is what I was asked:
There is a "START" folder within which there will be one or more files.
The shell script has to pick each file within the "START" folder.
Then call a Oracle stored procedure with the file name as input parameter.
 sp_ins_table(file name);
If the Oracle stored procedure is successful then the file has to be moved to "FINISH" folder.
If not then the second file is picked and the process continues until all the files are processed.
Please help me.
Thank you

 

by: cakuzoPosted on 2009-09-23 at 10:25:22ID: 25405616

Now this is something very different than your request before, you didn't told anything about a oracle stored procedure.

However, you will need to connect to that DB for example with sqlplus, therefore also a connection string will be needed ... sqlplus -s DBUSER/PASSWORD@DBNAME

Where DBNAME is usually a tnsname identifier or SID, which is usually defined in /opt/oracle/product/<VER>/network/admin/tnsnames.ora or ~/.tnsnames.ora or the file pointed in environment... export | grep TNS

My script above does exactly that what you described first. But now your request transformed to something different. I would suggest you to close this question and open a new one for the other thing.

 

by: RND2006Posted on 2009-09-23 at 10:26:57ID: 31632224

Thanks a lot.

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