Copy and crear tar.gz at the same time.

miros84 · 12-26-2012, 07:21 AM

I need to create a bash thata copy some folder and make a tar.gz file.

How can I create it?

Code:

cp -rf /some/folder /backup/name.tar.gz

millgates · 12-26-2012, 07:24 AM

Hi, have you tried

Code:

tar zcvf /backup/name.tar.gz /some/folder

shivaa · 12-26-2012, 11:53 AM

It can be easily done as:

Code:

bash# cp /path/to/source /path/to/target
bash# tar -cvf sample.tar /path/to/target
bash# gzip sample.tar

miros84 · 12-27-2012, 02:52 AM

But this way first I copy the folder and later I make it tar.
Is there way to copy and make it tar at the same time and only one command - one line?
Problem is that I want to change the name to (Year-Month-Day-hour)
and create a variable for that.

shivaa · 12-27-2012, 03:53 AM

Define a variable such as timestamp as follow:-

Code:

timestamp=$(date +%Y%m%d%H%M)

And then do:-

Code:

cp /path/to/source /path/to/target.$timestamp

Although cp command cannot create tar while copying, but still you can combinte both in one line as:-

Code:

cp /path/to/source /path/to/target ; tar -cvf sample.tar /path/to/file(s)

But there's no difference whether you do it in one line or two lines.

rknichols · 12-27-2012, 10:42 AM

If you really want to, you can make a pipeline that unpacks the tar file on-the-fly to do the copy function:

Code:

tar -czf - /path/to/files | tee /backup/name.tar.gz | tar -C /path/to/target -xzf -

The first tar command sends the compressed output to stdout, the tee command makes a copy in the named file and passes the stream along to its stdout, and the final tar command switches to the target directory and extracts the files from the stream on its stdin.

miros84 · 12-28-2012, 01:48 AM

Quote:

Originally Posted by millgates

Hi, have you tried

Code:

tar zcvf /backup/name.tar.gz /some/folder

I think that´s OK.
Very simple and work.
Why do I need 2 times tar.

Code:

z, --gzip
c --create
-v, --verbose
-f, --file F

Millgates, only I dont understand why do you use verbose?

millgates · 12-28-2012, 03:29 AM

Quote:

Originally Posted by miros84

I think that´s OK.
Very simple and work.
Why do I need 2 times tar.

The difference is that my example only puts the tar.gz archive to your destination directory, while the others will put both the compressed and the uncompressed directory there. It wasn't very clear from your first post which one you want.

Quote:

Originally Posted by miros84

Millgates, only I dont understand why do you use verbose?

Just a habit. I like to see what the command is doing. Feel free to omit that option.