Tagged Questions

A special type of file that references a file or directory.

learn more… | top users | synonyms (1)

0
votes
2answers
274 views

Hard links versus symbolic links: which one is faster / smaller? [duplicate]

Hard links Given a file original.txt, a hard link hardlink.txt will point to the same inode and continue to exist even when original.txt is deleted. Symbolic links Given a file original.txt, a ...
-1
votes
1answer
86 views

find not working right

if [[ "$1" == "" ]] then leftarray=($(find . -type l -printf "%p\n" 2>/dev/null)) rightarray=($(find . -type l -printf "%l\n" 2>/dev/null)) for var in "${rightarray[@]}" do ...
0
votes
1answer
208 views

How to rebuild /etc/cron.d on CentOS?

I installed an RPM on a CentOS machine that was supposed to merge its own files contained in a /etc/cron.d structure with the current /etc/cron.d. However it replaced the current contents. I believe ...
1
vote
1answer
107 views

Create Relative Symlink Inside Relative Symlink

I've been browsing for a minute now trying to find a way to create a relative symlink inside a relative symlink, and what I mean by that is this... I have my CakePHP Templates Skeleton as a symlink ...
1
vote
2answers
69 views

Capturing the name of the file pointed by a symbolic link in a variable

Say I have a symbolic link: /path/to/foo->/path/to/some_file.txt Say I have a shell variable x=/path/to/foo, how can I get some_file.txt in a shell variable y?
10
votes
2answers
1k views

Convert absolute symlink to relative symlink with simple Linux command

I have a complete sub-filesystem inside a path /home/user/system containing the standard Linux structure with directories /bin, /home, /root, /usr, /var, /etc,... This sub-filesystem contain symbolic ...
2
votes
3answers
133 views

Hot to make diff check a symlink link itself?

In Linux one can use the command diff to check for differences of files. I use it to check for differences across two modules, both copied to /tmp. However, both modules have symlinks, which might ...
0
votes
3answers
191 views

thoroughly find all links (hard and symlinks, and any combination thereof) leading to a file/dir

I read "most" of the proposed questions, but I believe they all miss the complexity of the right answer. I want, only using "basic" commands (for maximum portability) (i.e., something that would work ...
10
votes
5answers
787 views

Is there an algorithm to decide if a symlink loops?

Unix systems usually just error out if they are confronted with a path that contains a symlink loop or just too many symlinks, because they have a limit to the number of symlinks they will traverse in ...
1
vote
1answer
570 views

Unable to stat symbolic link to file

Background I am trying to wrap my head around how html is unable to access a file via a symlink. I performed the following simple experiment to try and gain an understanding of how apache would be ...
0
votes
0answers
33 views

Symbolic link path [duplicate]

Hi I want to find out the path of symbolic link. I want to make a script for that but I can not find a command that will print the path of symbolic link. I want to write a script with directory as a ...
6
votes
2answers
374 views

Why wouldn't a symlink to a symlink work?

I've run into a weird issue when installing SWI-Prolog using homebrew on my OSX 10.9 box. I'm trying to debug it to figure out whose bug it is (SWI-Prolog's, homebrew's, or OSX's), so I can report it ...
3
votes
1answer
106 views

Test for link with trailing slash?

I created in /tmp/test/ mkdir somedir ln -s somedir/ somelink I want to loop through only directories: for file in */ ; do if [[ -d "$file" && ! -L "$file" ]]; then echo "$file is a ...
4
votes
2answers
196 views

Force Bash 4 'globstar' option to ignore symlinks

Bash 4 has a fantastic option called 'globstar' that emulates (i.e. was stolen from) zsh's ** syntax for globbing across multiple directories. However, it's somewhat crippled (for my usage, at least) ...
1
vote
0answers
69 views

How can I make Krusader show real size of symlinked files?

In the "size" column in Krusader, there is a link's size noted, instead of the size of the actual file. This is the same as what ls -l shows (the full address of the target file, e.g. 64 B instead of ...
1
vote
1answer
364 views

find does not work on symlinked path?

If I run this command find $HOME/MySymlinkedPath -name "run*.sh" nothing happens, and gives no error ('MySymlinkedPath' is a symlinked path to another hard drive other then my $HOME one). These also ...
2
votes
1answer
95 views

Symlink with @ symbol?

I found that there is a symlink generated by ruby which has a @ sign at the path: default -> /Users/MyUserName/.rvm/rubies/ruby-2.0.0-p247@gemset The folder ...
2
votes
1answer
386 views

How to Create Symlink Dynamically for Dynamically Created File in a Folder

I create a file based on time or something like that for stylesheet. It is fingerprinting filename to avoiding cached version on web browser. Example file name: style_1374065326.css. I want to create ...
3
votes
2answers
147 views

Is there way to replace value of symbolic link? [duplicate]

Is there way to replace value of symbolic link? For example I want to replace symbolic link like this: first -> /home/username/foo/very/long/directories/that/I/do/not/want/to/type/again to ...
7
votes
2answers
122 views

Why is there a mix of symlinks and hardlinks in /bin?

I understand the technical difference between symlinks and hardlinks, this is a question about their use in practice, particularly I'm curious to know why both are used in seemingly similar ...
3
votes
2answers
61 views

Is there a way to condense ../.. parts of a path out programatically?

Say for example I have these types of paths to files in a script: /path/to/some/file/../../file1.txt Is there a command I can call such as readlink that will convert this path to its actual ...
4
votes
1answer
251 views

Advantage of symlinks over Windows style shortcuts

When I mainly used Windows, to make a shortcut, I could use a regular file detailing where it linked to, with the extension .lnk or .url Now, on Linux, I mainly use symbolic links, which are a ...
1
vote
0answers
102 views

Dereference copy with KDE Dolphin

From the cli I can dereference copy a symbolic link with cp -L. Is it possible to do this with the KDE Dolphin file manager?
3
votes
2answers
108 views

modify date of symlink on bindfs

I have the feeling that I cannot modify the date of symlinks on bindfs. See the following transcript of what I tried. On EXT4: nailor@needle:~$ mkdir /tmp/ex nailor@needle:~$ cd /tmp/ex ...
4
votes
3answers
313 views

How can I edit symlinks?

My basic understanding of a symlink is as a special file, a file that contains a string path to another file. The kernel's VFS abstracts a lot of that away but is there any reason why symlinks seem to ...
7
votes
1answer
140 views

Can you change a dynamic link target without recompiling?

I downloaded a program that unfortunately doesn't come as a source distribution. When I go to run it, I get the error error while loading shared libraries: libjpeg.so.62: cannot open shared object ...
5
votes
2answers
608 views

Why do hard links seem to take the same space as the originals?

Thanks to some good Q&A around here and this page, I now understand links. I see hard links refer the same inode by a different name, and copies are different "nodes, with different names. Plus ...
3
votes
1answer
4k views

Change permissions for a symbolic link

I have a symlink with these permissions: lrwxrwxrwx 1 myuser myuser 38 Aug 18 00:36 npm -> ../lib/node_modules/npm/bin/npm-cli.js* The symlink is located in a .tar.gz archive. Now when I ...
2
votes
3answers
2k views

$PWD variable equivalent of pwd -P

I want to use the $PWD variable in a script, but I want it to be the hardware path without symlinks. I know about /bin/pwd and pwd -P, but those aren't variables. I know that I can use: setenv MYPWD ...
0
votes
1answer
85 views

How to increase the link count for a directory, link count went to 0?

I have made myself land in this situation, it is a chrooted workspace on my system where I virtualize the entire file system ( so its not actual /var/log ) Is there a way that I can either delete this ...
1
vote
2answers
101 views

FS permission scenario

How can I achieve this files & folders permissions scenario: Consider these folder: Folder A: 640 root apache /var/www/A/ Folder www: 640 root apache /var/www/ and this linux user: id user1: ...
4
votes
2answers
60 views

Is it possible to notify/warn that current path isn't a valid symlink anymore?

Let's say we have ./a and ./b directories. Then we create a symlink using ln -s a x and entering it cd x The pwd would be x Then in another terminal we change the x so that it pointed to b. But the ...
2
votes
3answers
459 views

hardlink/softlink multiple file to one file

I have many files in a folder. I want to concatenate all these files to a single file. For example cat * > final_file; But this will increase disk space and also will consume time. Is there is a way ...
5
votes
3answers
521 views

Getting relative links between two paths

Say I have two paths: <source_path> and <target_path>. I would like my shell (zsh) to automatically find out if there is a way to represent <target_path> from <source_path> as ...
15
votes
1answer
29k views

Create a symbolic link relative to the current directory

I'm trying to create a symbolic link in my home directory that points to a directory on my external HDD. It works fine when I specify it like this: cd ~ ln -s /run/media/name/exhdd/Data/ Data ...
3
votes
3answers
113 views

cp SOMEFILE .. copies to a different directory after cd'ing via a symbolic link

Consider the following setup: ~/Desktop/Public/subdir ~/Desktop/subdir --> ~/Desktop/Public/subdir (symbolic link) Now I do: cd ~/Desktop/subdir Which leads me into the linked directory. If ...
1
vote
1answer
510 views

How does one view what the contents of symbolic link are, instead of the destination? [duplicate]

Is there some way in which I can view/edit what the contents of a symbolic link are? I don't want to view the destination the link points to, but the symbolic link itself. Suppose I have a file, ...
2
votes
1answer
298 views

Why does ln -sf silently fail?

ln -sf source_file target_file succeeds even when source_file does not exist. ln -f source_file target_file on the other hand fail, as expected. How can it be tuned to give error on the first case ...
4
votes
1answer
109 views

Behavior of `du` command with `-L` flag

I've noticed a strange behavior with du command when it's used with -L command line option. I'm using Slackware 14 and Coreutils 8.19. To reproduce the strange behavior, create two folders: mkdir ...
1
vote
3answers
3k views

What does `l` mean in an `ls` listing?

When I run ls -adl .* in one of my directories, I get a file that has this listing: lrwxrwxrwx 1 user group 43 Jul 3 16:25 .#filename.py -> person@computer.edu.4018:1372874769 The filename ...
3
votes
0answers
355 views

sshfs breaks symlinks from SFTP server

Does anyone know how to mount a remote SFTP path via SSHFS so that you can work with symlinks? When I do this, all the symlinks I create point to the wrong files (not the ones I linked to.) All the ...
1
vote
1answer
58 views

is there some kind of symbolic links that support moving or renaming the target file?

I liked this explanation of hard and soft/symbolic links: http://unix.stackexchange.com/a/22406/42226 Now the reason why I googled about soft and hard links is simply because I was organizing my ...
1
vote
2answers
2k views

cannot create symbolic link on CentOS 5.6 - File exists error

I am trying to setup a symbolic link on my CentOS 5.6 machine to point dev_crmpicco/ to ~/vhosts/dev/dev_crmpicco/web/ I am using the following command: [crmpicco@devel dev]$ ln -s ...
2
votes
1answer
1k views

Using symbolic link on directory with contents

I'm working on a Debian machine with a bunch of different filesystems and I'm trying to manipulate a large amount of data in MySQL. I've run out of room in my home directory, but there's a ton of ...
1
vote
1answer
311 views

Symlink Copy a Directory Non-recursively

So I want to symlink copy all the files and folders in one directory to another directory. When I use cp -s though without the -r option I get a bunch of "omitting directory" warnings, and I don't ...
23
votes
2answers
1k views

Symbolic link recursion - what makes it “reset”?

I wrote a little bash script to see what happens when I keep following a symbolic link that points to the same directory. I was expecting it to either make a very long working directory, or to crash. ...
5
votes
3answers
303 views

cd to directory of a symbolically linked file

Before I write a script, anyone know an easy way to do the following: $ pwd /foo/bar $ ls -l lrwxr-xr-x 1 username admin 48 Apr 17 2012 foo.sh -> /bar/foo.sh $ cd /bar $ ls foo.sh i.e., in ...
0
votes
1answer
89 views

How to prevent find -execdir from following symlinks?

Say I have a symlink: linktob -> b If I run something like find . -type l -execdir chmod 777 {} \;, the chmod command affects the file the symlink is pointing to, i.e. ‘b’. The man page suggests ...
3
votes
1answer
467 views

How can I efficiently dereference all symlinks in `find` *output* filenames?

I need paths to be both fully resolved and relative to a given directory. This must be done efficiently, since the number of paths is often greater than 100,000. Situation: I have directories which ...
3
votes
2answers
267 views

How Do I Block Read Access to a Symbolic Link?

I have this file structure: > APPLICATION 1 >> CONTROLLER (@JuniorProgrammers) >> MODELS (symlink to SHARED/MODELS) >> VIEWS (@Designers) > APPLICATION 2 >> CONTROLLER ...