tar -cvf mystuff.tar mystuff/
tar -czvf mystuff.tgz mystuff/
tar -xvf mystuff.tar
tar -xzvf mystuff.tgz
tar -tvf mystuff.tar
tar -tzvf mystuff.tgz
Note that .tgz is the same thing as .tar.gz
Tar “tars up” a bunch of files into one “tar-file”
gzip is compression, but only works on one file, so the entire “tarfile” is compressed.
Also when creating a tar or cpio backup, never, never, never use an “absolute” path — you have been warned; also linux tar warns you of this too. The problem is that when you want to unpack, you cannot choose where to unpack to, you will be forced to unpack to the “same” absolute path. When creating a tar or cpio you should change the the appropriate directory and tar from there.
Also when creating a tar or cpio it is general good practice to tar up a directory (appropriately named) which contains your files, rather than just the files. This is good courtesy to anyone unpacking your tarfile.
If you would like to create a tar file while saving ownership and permissions, add the “p” flag.
Creating and saving ownership and permissions:
tar -cpvf mystuff.tar mystuff/
tar -cpzvf mystuff.tgz mystuff/
Also take note of the following commands:
(cd /mydir && tar -czf – .)|(cd /destdir && tar -xzvf -)
tar -czf – . | ssh user@dest “(cd /destdir && tar -xzvf -)”
(cd /mydir && tar -czf – .) | ssh user@dest “(cd /destdir && tar -xzvf -)”
If you receive an error such as the following:
[root@localhost test]# ssh user@dest "(cd /rh62/home/kernel && tar -czvf - linux-2.2.22.tar.bz2)"|tar -xzvf - user@dest's password: linux-2.2.22.tar.bz2 linux-2.2.22.tar.bz2 gzip: stdin: decompression OK, trailing garbage ignored tar: Child returned status 2 tar: Error exit delayed from previous errors [root@localhost test]#
Then try leaving off the compression as follows:
[root@localhost test]# ssh user@dest "(cd /rh62/home/kernel && tar -cvf - linux-2.2.22.tar.bz2)"|tar -xvf - user@dest's password: linux-2.2.22.tar.bz2 linux-2.2.22.tar.bz2 [root@localhost test]# echo $? 0 [root@localhost test]#
Spaces in your filenames?
Having fun with spaces in the filename or directory name? Here’s your answer:
find . -type f -name '*jpg' | grep " " | while read REPLY; do tar -cf - "$REPLY" | (cd /tmp/jpg && tar -xvf -) done
find . -type f | while read REPLY; do cp -a "$REPLY" /tmp/jpg/`echo $REPLY \ | sed -e 's/ //g' -e 's/\///g' -e 's/^\._//'` done ssh root@dest 'tar -C / -czf - --exclude ./proc/* --exclude ./dev/pts/* .' > gmaster.tgz proc and dev was empty for the following command, so I didn't exclude them: tar -czf - . | ssh user@dest "cat - > k12ltsp.master.tgz"