merging text files

Shell Programming and Scripting
1

hi,

i need to merge 2 lakh text files .....
can somebody please help me with a script/program for it...

2

hi gurus,

i have 2.2 lakh small files in a folder....

i need to merge all those files into one and use it....
can you please help me with a solution?

3

Your question is a bit vague.

If you just one to append one file to another, you can use cat or tee.

cat file1 file2 >file3
# or
cat file2 >>file1
# or
tee -a file1 file2
4

you are correct ...
but i have 2 lakh such files....and the file names are not in any particular order....

5

You could do something like this

for files in a b c d e f g h i j k l m n o p q r s t u v w x y z
do
  cat "${files}"* >> /tmp/bigfile.txt
done
6

What do you mean by "lakh"??

Try this:

find . -type f -exec tee -a ../outfile "{}" \;
7

For the uninitiated, lakh is a unit in the Indian numbering system.

One lakh would translate to a hundred thousand

1 lakh = 100,000

8

This will append "bigfile.txt" to the output contained in bigfile.txt. To avoid this, put bigfile.txt in a different directory, like I did with my find example.

9

Use the below code :

$ cat merge.sh

for file in $@
do
cat $file>>merge.txt
done

Run the script merge.sh as below:
$merge.sh *

This will merge all the files in the directory to one file