The tar archive format and/or the command-line utility for working with tar files.

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5
votes
1answer
321 views

What is the difference between a tar of a complete filesystem and an image?

I can create an image of a filesystem, or I can create a tar-file containing all of it. Is an image therefore something like a tar-archive? Or do these two types differ in more ways?
40
votes
3answers
19k views

How to choose directory name during untarring

Say I have file named ugly_name.tar, which when extracted, becomes ugly_name directory. What command can I use such that the resulting directory name is pretty_name instead?
2
votes
1answer
1k views

Tar ignore or fix checksum

I have a archive backup.tar that was created with a nonstandard program a long time ago. I no longer have access to the original program. The archive is Not compressed (gzip). When trying to extract ...
3
votes
3answers
799 views

Different count for compressed file listing vs directory listing

I was taking a backup of a folder, where I used the following command : sudo tar -zcvf www.tar.gz /var/www/ It successfully compressed, just for verifying the number of files in the compressed ...
6
votes
2answers
11k views

How to make tar save the archive on a remote machine using sftp or ftp?

I would like to backup some of my very important data on a remote machine. Currently I'm just saving it to my local machine by using this command: tar -cvjf ~/backups/Backup.tar.bz2 ~/importantfiles/* ...
1
vote
2answers
672 views

Extract TAR to SD-Card and verify contents afterwards

We currently extract a TAR archive to a SD-Card like this tar xf ${ROOT}/rootfs.tar -C /cynox/${DRIVE}/${TARGET} As a side note: The rootfs.tar contains files for an embedded Linux system. Some of ...
2
votes
1answer
253 views

recover partially overwritten tape from tar -c

I have a situation. I was supposed to run tar -x to recover a tar file from a tape but I pressed "c" and forgot to put the tape on readonly. The file was on fsf position 23, but the tape had 27 files. ...
6
votes
1answer
106 views

tar '-u' operation

When adding an updated version of a file to a tar file using '-u', and looking at the tar file with '-t', I notice that a newer version gets added to the end (the tar file also increases in size); ...
2
votes
1answer
347 views

What characters TAR doesn't like?

I keep a list of photos burned to dvds for incremental backups but I got into a strange situation where a file was already burned into a dvd but tar keeps saying it's not. Here the steps to reproduce: ...
1
vote
1answer
455 views

Error handling with tar and keep-old-files option

I am unpacking tar files with the option --keep-old-files so that I don't clobber files that are already there. The annoying thing is that this causes tar to produce an error code #2 (fatal error) ...
0
votes
2answers
256 views

Installer packages: .bin, -rpm.bin, tar, tar.z

Is it correct that most of Unix&Linux software supports x-copy deployment? If I download the installation package and uncompress the files into a particular directory - would that be enough to ...
2
votes
2answers
8k views

tar: short read

I get an error when I uncompress my tar. I do this: tar xvf VM_DECOMPTES.tar and after some time I get the following error: tar: short read What is going wrong here? tar: unrecognized ...
0
votes
2answers
728 views

Is it safe to assume the tar.gz file is healthy?

I have a rather large tar.gz file (17GB) which is a tar.gz version of a directory. The problem here is I got the following message after the tar operation. tar: Error exit delayed from previous ...
4
votes
2answers
155 views

Where can I find updated TAR.rpm for Oracle VM Server?

I'm using tar for my incremental backup script on Oracle VM Server 3.2.2 and it comes with tar 1.15.1 I need this command: tar -cf drive-C.full.tar --no-check-device \ ...
1
vote
0answers
247 views

How to do incremental backup of .img files containing windows partition?

On an OVS I have a few windows machines. I want to create a full backup their .img disk files, thats done, .img.gz. Than I want to incrementally backup their C:/ partition, but thats not working. ...
1
vote
3answers
350 views

Taking Backup of files of particular limit in unix

Here is the scenario, I have 1000 files in a folder each ~3 MB. I want to zip all files into 50MB each zip and remove the original files. NOTE: 50MB may contain 20 files or 10 files but that zip ...
1
vote
4answers
2k views

tar a specific number of files listed in a text file

I have a text file which contains a list of files. I use. tar --null --no-recursion -uf abc.tar --directory= /tmp/temp --files-from abc.txt This command simply creates a tar with all the files ...
-3
votes
1answer
2k views

Is there a way to tar multiple files in a directory (Linux/Unix)?

Is there a fairly simple way to tar several (specific) files in a directory? For example let's say the following is a directory: -rw-r--r-- 1 allend bin 98 Jul 20 15:50 scriptlog.log -rw-r--r-- 1 ...
-1
votes
2answers
96 views

What's wrong with this tar command? [closed]

find /informatica/dev/SrcFiles* -mtime +7 -and -size +1M -exec tar -rvf files.8.2.2013.tar {} \; This command is running/working correctly and I'm not sure whats wrong. I want to find the files that ...
1
vote
0answers
151 views

Disk partition emptied during tar backup

This morning I was doing a routine backup of my development drive, one of 4 primary partitions on my hard-drive. The script I ran was: filename="/home/Backups/Devi_"`eval date +%Y%m%d`".tgz" touch ...
8
votes
4answers
5k views

howto inflate AND extract a .tar.bz2 using the 7-zip command line tool

I have a .tar.bz2 file that I want to be decompressed and extracted via the 7-zip commandline tool. So basically I'm looking for the equivalent of tar -xjf foo.tar.bz2 with 7-zip there is only the ...
5
votes
1answer
5k views

Compress a directory using tar/gz over SSH to local computer?

I'd like to essentially tar/gz a directory on a remote machine and save the file to my local computer without having to connect back into my local machine from the remote one. Is there a way to do ...
4
votes
1answer
386 views

GNU `tar` runs `stat` on an excluded directory. Is it normal?

I'm running tar as root like this: cd / tar --create \ --verify \ --exclude-backups \ --exclude-caches \ --auto-compress ...
3
votes
2answers
2k views

Verifying a .tar.gz backup

Edit 3: For people who will read this question: --verify mysteriously fails with "Warning: Cannot seek: Illegal seek", hence I recommend you look for alternative ways to verify your archives. My ...
3
votes
4answers
2k views

Why is my tar file bigger than the directory backed up

This question did not help me (despite having the same title). So I post this even though this is a duplicate question. As far as I can tell, the total in du -k includes all the subdirectories and ...
1
vote
2answers
7k views

Create .tar.gz from a directory omitting some subdirectories and add only new or changed files

I need to create a script, maybe bash, maybe just a .sh that checks for files changes on a root directory and sub-directories of the root, and adds to a new file. The tar.gz file name should have the ...
4
votes
2answers
16k views

Wait for process to finish before going to the next line in shell script

I have a script I made to create a backup. I need to make sure the backup is ready before it runs the /home/ftp.sh command. How can I do so? I use CentOS 5.6 #!/bin/bash tar -Pcf ...
1
vote
6answers
2k views

How to avoid overwriting existing files while using tar command?

The tar command just overwrote my file an hour ago while I was trying to make a tar to backup it. I ran tar zcvf foo.tex foo.bib and after that my tex source file lost. What's worse, this is the ...
1
vote
2answers
674 views

Why is my tar file bigger than its contents?

I have a tar file that I have recreated from two files - xaa, xab (the results of using the split command). The tar file is the size I expect it to be but when I extract it the folder I get is a ...
3
votes
2answers
30k views

How to install tar file (jhead) on Mac or Linux machine

I'm new to Linux and tar balls and was wondering how to properly install them on a Mac or Linux machine. I would prefer to know how to install on a mac but I just need some help understanding them. I ...
2
votes
1answer
3k views

Ignore Symlinks when Extracting Tarball

I have a relatively simple question that I cannot seem to find the answer for. I am attempting to extract a tarball (*.tgz, to be exact) and receiving terminal errors on extracted symlinks. ...
8
votes
3answers
3k views

What does the -f parameter do in the tar command

When using tar I always include -f in the parameters but I have no idea why. I looked up the man and it said; -f, --file [HOSTNAME:]F use archive file or device F (default "-", meaning ...
3
votes
1answer
372 views

How can I copy a file between server using bsdtar?

I'm looking for the fastest way of copying a file between 2 linux servers using bsdtar. With normal tar, I would do something like: ssh root@remote 'tar -cz -C /my/path/ big_file.txt' | tar -zxv ...
6
votes
4answers
3k views

How do I use the Unix tar command with an implicit filepath?

I am using the tar -xvf command and it is taking the explicit path. However, the path is full. Example: tar -xvf 13.2.tar It is taking the path of /mnt folder. The / folder is full. How can I tar ...
11
votes
3answers
2k views

Universal extractors

With an increasing number of archive/compression file formats, is there a single free/open-source command line tool to rule them all? Perhaps something with a consistent / unified set of flags? (note ...
8
votes
1answer
2k views

Under what circumstances does gunzip & tar xf work but tar xzf fail?

To illustrate the point: I have downloaded the LEDA library from the company's website. Using tar -xzf on it fails: $ tar -xzf LEDA-6.3-free-fedora-core-8-64-g++-4.1.2-mt.tar.gz tar: This does not ...
2
votes
2answers
7k views

How to scp/tar files that are in between specific days?

I need to copy db log files between two suse servers where I am interested in files ONLY in between 10.3.2013 - 13.3.2013 It is desired to compress the files before copying so I tar them and scp. ...
3
votes
6answers
3k views

How to make tar globbing work with the 'change directory' option

I have the followin directory structure: base/ files/ archives/ scripts/ I want a script to run from scripts/, compress files that match results.*.log in files/ into a gzipped tar archive ...
3
votes
8answers
4k views

Triple compression and I only save 1% in space?

I've been trying to save space on my linux server, and I had a folder containting, in subfolders, 22GB of images. So I decided to compress them. First I used tar: tar -zcf folder.tar folder Then ...
3
votes
1answer
2k views

Difference between --xz and --lzma in GNU tar?

As far as I can tell, XZ is a container that uses the LZMA2 algorithm (i.e. extended LZMA); but e.g. $ xz foo/ complains about foo/ being a directory. So presumably the correct way to preserve ...
2
votes
1answer
118 views

Do tar archives include user/group name by default?

In tar's man page I stumbled upon two options: --numeric-owner: always use numbers for user/group names --owner=NAME: force NAME as owner for added files This made me wonder: When I tar ...
5
votes
2answers
10k views

Remove files from tar archive

I have a large file foo.tar.xz that contains a lot (say 200000) of files. I figured out that this archive contains some (around 5000) files I don't want. I don't have sufficient disk space to ...
2
votes
4answers
107 views

What year did the Unix “tar” program get released?

Here's an simple question: what year did the Unix "tar" (TApe ARchive) come out? I wasn't able to find the answer with Internet searches.
0
votes
2answers
237 views

Can tar archiver zerofill a file?

I have received a tar archive from a co-worker and after decompresing I found that some text files are corrupted. More precisely they are filled with zeros. They have correct size but all bytes are ...
13
votes
6answers
19k views

tar + rsync + untar. Any speed benefit over just rsync?

I often find myself sending folders with 10K - 100K of files to a remote machine (within the same network on-campus). I was just wondering if there are reasons to believe that, tar + rsync + ...
10
votes
5answers
7k views

“tar: unrecognized option --warning” during 'apt-get install'

I just ran apt-get upgrade on my debian 5 vps and I got this error: tar: unrecognized option `--warning=no-timestamp' Now when I try to install other packages e.g: imagemagick I get the same ...
3
votes
1answer
2k views

Untar Without Top-Level Directory

I have a tar (websites.tgz) that contain a bunch of Drupal websites that are tarred up starting with 'htdocs' I need to untar them into /local/htdocs/web1 /local/htdocs/web2 and so on. But I ...
6
votes
3answers
1k views

Tar piped to split piped to scp

So I'm trying to transfer a bunch of files via SCP. Some of these are too large to be stored on the recipient (Android phone, 4GB file size limit). The sender is almost out of space, so I can't ...
7
votes
3answers
6k views

How do you verify a tar archive that is already written?

I know that you can do -W when creating an archive, but how do you verify and already-created archive? tvWf says it's not a valid tar archive? $ mkdir tmp $ echo asdkfjh > tmp/a $ echo qweroiu ...
2
votes
0answers
552 views

How to fix the corruption of the tar balls?

I was making a complete server backup and tried making the tar balls of each directory structure by using the following commands: nohup tar -cvf - /etc | gzip -9 -c > /opt/Backup_4_Jan/etc.tgz ...