[Bug-tar] Add an option to read pipe contents

[Luiz Angelo Daros de Luca]

Hello,

Tar always saves a "pipe file" and do not permit to backup its contents. 

mkfifo a
echo 123 > a &
tar -cz a | tar -tzv
prw-rw-r-- pcarga/pcarga     0 2008-06-23 11:58 a

Instead of:

mkfifo a
echo 123 > a &
tar -cz a -read-pipes-to-files | tar -tzv
-rw-rw-r-- pcarga/pcarga     4 2008-06-23 11:58 a

My problem is that I must backup an oracle database that its dump does not fit in local filesystem. This way
I'm not able to create temp files. Also, I wanted to include some diretories in this same tar. I wanted to use something like this:

mkfifo $FIFO
$ORACLE_HOME/bin/exp file=$FIFO &
tar -cz $FIFO other-dir1 other-dir2 | ssh remoteHost "cat > mybackup"

Any solution for this case?

-- 
 Luiz Angelo Daros de Luca
 address@hidden
 ICQ: 19290419

 I Know, "Where you wanted to go today",
 but I decided to stop here instead!
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