Ubuntu :: Hard Links In Tar.gz When Both Link And Target Are In The Archive?

Jun 28, 2010

I am copying my home folder from my old computer (Ubuntu 9.10) to my new one (Ubuntu 10.04)

I thought that I would make a tar archive of my home directory (~60GB), then copy it across the network and untar it in my new home folder.

The problem is that I have several hard links (30 at most). When I try and untar the tar in my new computer it runs into errors with the hard links.

I think the problem is that it has unzipped the hard link before it's target and detected an error.

One solution is to add --hard-dereference to the tar command , this will create a separate copy of each hard link. but I would really like an exact copy of my home folder on my new computer.

Does anyone have any ideas? Either copying my home directory, or how to make tar handle hard links sensibly?

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Debian :: Edit Link Target / Edit The Link Target To Force Ip String At End?

Jun 16, 2011

What I am trying to do is edit the link target to force ip=xxxx.xxx.xxx string at end. I have a software program which access 4 different servers running the software but with different configs. In xp I can copy links and modify as above to correctly force the program to the various servers.

I have read the various how tos on hard vs sym links which I get. Playing around with hardlinks and sysmlinks (the examples I find) does not seem to be what I need. Feel like this is pretty basic stuff but I am a bit stumped.

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General :: Rsync --link-dest Not Creating Hard Links On External Usb Drive?

Aug 24, 2009

CentOS 5.2 64bit 2.6.18-92.el5xen. Use rsync with --link-dest for nightly backups, works well. Was recently asked to start weekly backups to an external drive for off-site storage. The regular syncing works but hard linking seems to be ignored. So the backup is long with no space saving advantage. Here is an example of the command being run:

rsync --stats -axzvl --numeric-ids --delete --link-dest=/mnt/DISASTERBACKUPS/austinBackups/backups/2009-08-21 /AUSTINBACKUPS/backups/2009-08-24 /mnt/DISASTERBACKUPS/austinBackups/backups/

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Ubuntu Networking :: Mount To Vista Needed For Apache - Symbolic Link Not Allowed Or Link Target Not Accessible

Apr 26, 2010

I have a problem where I'm using Ubuntu linux to mount a Windows Vista machine's USB drive and access it on the web using Apache. I did have the USB drive plugged into the Linux machine directly and that was working via the web. FollowSymLinks is on in httpd.conf

[Code]....

The mount works and I can see the files (see above) from my regular linux user account. If I make a test file in /mnt and soft link to that, I can see it on the web. So it's just the mount to the vista machine that seems to be a problem. It's supposed to be a simple read-only mount and the apache login should (I think) be able to see the same generic root access permissions.

log from apache: [Mon Apr 26 20:39:42 2010] [error] [client 99.99.99.99] Symbolic link not allowed or link target not accessible: /home/user1/pub_html/Music, referer: https://xx.xx.xx/~user1/music.html

The credentials have a login and password that matches a special read-only account on Vista. I can see the files on the system from Linux, but not via the web. As mentioned above, a different link to the same /mnt area works fine via the web. I've tried several different mount options with no success.

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OpenSUSE :: Symbolic Link Not Allowed Or Link Target Not Accessible: /srv/www/htdocs?

Apr 28, 2010

i only need localhost for testing some phpnow i get[Wed Apr 28 18:44:57 2010] [error] [client ::1] Symbolic link not allowed or link target not accessible: /srv/www/htdocs

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Ubuntu :: Lucid Apache2 Directory Symlink Error "Symbolic Link Not Allowed Or Link Target Not Accessible"

Jun 2, 2010

There is a symlink from /var/www to a personal directory. FollowSymlink and chmod 755 are all set. It works perfectly until each morning I will get a "Symbolic link not allowed or link target not accessible" error. When I do a "sudo service apache2 restart", the problem will go away.

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Programming :: Python: Read Through Multiple Links To Get To The Target?

May 28, 2010

say you've got the following file structure:

Code:
ls -l *
lrwxrwxrwx 1 briank cg 1 2010-05-28 15:23 a -> b
lrwxrwxrwx 1 briank cg 3 2010-05-28 15:23 b -> d/c
d:
total 0
-rw-rw-r-- 1 briank cg 0 2010-05-28 15:23 c
code....

if I use python's os.readlink on 'b', it reports what I want, which is that it points to 'c'.
however, if I os.readlink('a'), it reports that 'a' points to 'b', which is true, but then 'b' points to 'c'.... so really, when I ask for 'a', I will eventually get 'c', but python isn't reporting that.

I know I can do an if test - if os.islink(os.readlink('a')): blah blah, but is there a more built-in or one-liner way of doing this? I'm looking to get to the last file in a list of symlinks, i.e. the regular file that they all point to.

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Software :: Link Custom Libraries To Target Executables Using In G++ Linker

Jun 29, 2010

I am having some trouble when I try to link my custom libraries to target executables. There are two libraries

liba
libb

and an executable exec based on main.o The library libb has some reference to liba. Now if I put the libraries in same directories, I can compile the code as g++ -o exec main.o liba.a libb.a But, if I put the libraries in different directories, say d1 and d2, and use the command as g++ -o exec main.o d1/liba.a d2/libb.a I get an error as undefined reference to some function in liba. I am not sure if I am missing some thing in linking process. Also, if libb doesnot refer any functions in liba, there is no error in either of the case.

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Programming :: Link Directories - Symlink Not Updated / Hard Link Not Supported?

Sep 6, 2010

In the ordering of files I keep I need links to directories. Sometimes I even need to move directories to new locations. I have tried using symlinks, but they become dead when I move the directory they point to. I have tried hard links, but I haven't found any Linux file system that would support hard linked directories. How can I achieve that a complex structure of directories (currently with symlinks for directories and hard links for files) keep symlinks live when directories are moved?

- is there any utility that updates symlinks when a directory is moved?

- is there any Linux filesystem that supports hard linked directories?

- is there any good Linux interface to the new NTFS (the only file system I know to support automatically updating directory links, called directory junctions)?

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Programming :: Warning: This System Can Not Link To Static Lib Archive

Jan 27, 2010

I'm trying to link 'aubio' (a lib) and its failing on one of ts dep's with this error.

Code:

$ make
Making all in src
make[1]: Entering directory `/home/John/Externals/aubio/aubio-0.3.2/src'
make all-am

[code]....

"Warning: This system can not link to static lib archive /usr/local/lib/libff"

I've configured/make/make installed fftw and its doing just fine in the usr/lib folder, so I'm at a loss at how to fix this. Do I need to build fftw again using some kind of shared make switch? I couldn't find any referance about that.

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Server :: Create Soft Link And Hard Link In RHEL5?

Sep 8, 2010

how can we create soft link and hard link in RHEL5 when am using in command it is giving format error

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Ubuntu :: Broken Links On Every Installation But Link Is Ok When See It In Nautilus

Jun 8, 2011

I reinstalled Linux, in a new Partition, just formatted. Now, when I try to install, or copy, into my /usr/local/"whatever" folders I just see broken links of the files (the little x in the right top of the file, I presume is a broken link).But when I see the file in nautilus, the files seems to be good. But the programs doesn't works. The programs I've been installing are NukeX and UV Layout. The weird thing is that the very first time I installed Linux everything worked smoothly. Since I formatted the partition I've only unistalled Noveau and installed the Nvidia latest drivers of my GPU.

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General :: Difference Between A Hard Link And Symbolic Link?

Jun 20, 2011

I have searched around and am trying to understand the difference between a hard link and symbolic link (soft link). I found this link is quite useful. But I am still not very clear. I understand soft link is not a copy of original file, but is a hard link a copy or not?

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Ubuntu :: Convert "link Files" Back Into Symbolic Links?

May 31, 2010

For a while now i have been backing up (rsync) to a 1.5TB NTFS formatted USB drive.Now the time has come that i need that backup Looking at the contents of the NTFS drive, all my symbolic links have been converted into a single file which contents starts with the text "IntxLNK". It seems this is some kind of SMB/CIFS/Microsoft link file.

Does anyone know how i can convert these "link files" back into linux symbolic links?

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Ubuntu :: Hard Links Only For All Files In Directory?

Jan 15, 2010

I have a Music folder and I need to create hard links for all files in Music directory.For example:

~/Music/01 - the song.ogg // hard link for this file
~/Music/Folder/02 - a song.ogg //and for this file TOO!

~/Other Music/01 - the song.ogg
~/Other Music/Other foldr/02 - a song.ogg

I want hard link files in folder and in subfolders, but not folders its self.

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Networking :: What Are Short Range Link And Long Range Links In Routing

Jun 23, 2009

get me understand the short range and the long range links from routing (and routing protocols') point of view.

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Server :: Maximum Number Of Hard Links?

Dec 8, 2010

I have a 32-bit Linux server with an ext3 file system. Is there any kind of upper-limit to the number of hard links I am allowed to use? (Per inode...? Per directory...? Per filesystem...?) And (just out of curiosity) would this be any different if I had a 64-bit machine or a different file system?

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Software :: Rsync: Backups And Hard Links?

Jul 13, 2011

I am using rsync for incremental backups. I am backing up to a second hard drive on my computer. When I check the individual backup directories (backup.0 through backup.4) with du -hs they each show 12G; when I check the parent directory squeeze it shows 15G. Over 4 backups I have added 3G. I haven't made very much for changes to directories I'm backing up and am using hard links. I have included some info below.

Quote:

Backup script:

#!/bin/bash
mount /mnt/backup
cd /mnt/backup/squeeze/
rm -rf backup.7

[code]....

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General :: What Is The Purpose Of Using Hard Links Instead Of Being A Shortcut To Some File

Mar 23, 2011

what is the purpose of using hard links instead of being a shortcut to some file ?

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CentOS 5 :: Differences Between Scsi-target-utils & Iscsi-target

May 8, 2009

I want to run ISCSI target on CentOS. Both "scsi-target-utils" and "iscsi-target" can be used.

They seem to have the same function.

Is there any significant difference between them, on performance or stability?

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General :: Create Hard Links Within A File System To A Directory?

Aug 1, 2010

I am trying to create hard links within a file system to a directory, but unable to do that. is there any limitation to create hard links to directories within file system ?

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Software :: List All The Soft And Hard Links An Installed Distribution Has?

Jul 7, 2011

wanted to knowIs there a command the root user can type in the command line to list & know all soft and hard links there are in a distro that is installed ?

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Ubuntu :: Zip File Gvfsd-archive / Archive Mounter Read Write Mode

Dec 6, 2010

I'd like to ask about archive mounter feature, can I mount zip file with read write mode? can gvfsd-archive do that?, or I must use fuse-zip to mount it? If I must use fuse-zip, how I wrap it so I can use it via nautilus or via gvfs-fuse-daemon

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Ubuntu :: Evince Fails To Open Pdf External Links In Non-gnome System - Unable To Open External Link

Jul 17, 2010

Evince in non-gnome systems is unable to open external link. The error msg it shows is

Code:

Unable to open external link The specified location is not supported. I have already googled it, however it only says it is a bug, without any solution available. Evince in gnome systems however work just fine. Is there any way evince can use sensible-browser to open external links?

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General :: When Would Creating A Hard Link Be Useful

May 25, 2011

There are basically two main limitations with hard links:

Hard links normally require that the link and the file reside in the same file system. Only the superuser can create a hard link to a directory.

Thus, symbolic links were introduced to get around the limitations of hard links. So, the question is, are hard links still needed? Might there be situation where they are more useful?

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Ubuntu :: Links Browser Script - Automatically Fills In The Credentials On The Links Login Page?

Dec 6, 2010

At my Uni, we use a web-based login for our internet connections. Its based off of Cisco, and every Wednesday night every computer on campus must re-enter their credentials to use the network.

Normally on my several computers I simply pull up the Terminal, point links to google.com using

Code:

And enter my credentials when Cisco redirects to the login page.

Literally, the process is

Code:

Then ENTER to accept the redirect, down arrow to skip over the logo image, USERNAME, ENTER, PASSWORD, ENTER, ENTER.

Naturally, this is EXTREMELY time consuming, as I have about 5 computers located around campus and must physically walk to the machines and login every single week.

My question is, How would I formulate a program that does the following;

1) checks for connectivity (i.e. is able to reach/resolve to the greater part of the internet) and

2) automatically fills in the credentials on the links login page?

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General :: How Does Du Determine Which Hard Link To Disregard

Nov 16, 2010

We have two directories:

$ ls -l
total 8
drwxr-x--- 2 nimmy nimmy 4096 Nov 15 19:42 jeter
drwxr-x--- 2 nimmy nimmy 4096 Nov 15 19:42 mariano

I create one file in the first folder:

$ dd if=/dev/zero of=jeter/zero_file.1 bs=512000 count=1
1+0 records in
1+0 records out
512000 bytes (512 kB) copied, 0.268523 s, 1.9 MB/s

This is the output of du:

$ du -sh *
504K jeter
4.0K mariano

As expected, if I place a hard link of the zero_file. in the other folder du output does not change:

$ ln jeter/zero_file.1 mariano/zero_file.2
$ du -sh *
504K jeter
4.0K mariano

there is nothing in the filesystem that points to zero_file.1 as the original file. So how does du know to count zero_file.1 but not zero_file.2?It cannot be a timestamp comparison because all hard links share one inode; they'll have the same timestamp data correct?

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General :: Creating Hard Link To Directory?

Jul 3, 2009

I have heard that creating hard link to a directory is not possible however when reading the man page of "ln" the "-d/-f" option says hard link directories ( super-user only). Thus this mean the super user i.e root can create hard link to directory and not a normal user , If yes then you . Even on specifying the above options I get a operation not permitted for a super user.

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Hardware :: New WD Hard Drive ATA Link Errors

Jul 10, 2011

I just bought a new hard drive for my lenovo ThinkPad R60e. It is the following model:

Code:
# hdparm -I
ATA device, with non-removable media
Model Number: WDC WD5000BUDT-63G8FY0
Firmware Revision: 01.01A01

[Code].....

After scanning selected spans, do NOT read-scan remainder of disk. If Selective self-test is pending on power-up, resume after 0 minute delay.

It is regardless which kernel version I use (latest ARCH Linux 2.6.39 or 2.6.23 from a grml live system), the error is persistent everywhere.

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Programming :: Scripting : Change Markdown Links To Wikitext Links?

Feb 3, 2009

I have a personal wiki of notes, with now thousands of links in markdown format:

[link text](http://example.com)

but now that fckeditor is available for mediawiki (very beta), it has become much better to just stick with wikitext format. There are only a few conversions to do: tables, links, and bulleted lists. The lists are a fairly simple regex and fckeditor magically reformats the tables, so all I'm left with is the links. But I'm not a regex master. How do I reformat code...

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