06-30-2011
Quote:
Originally Posted by
Corona688
The "." and ".." special directories originally used to be directory hardlinks (created by hand!) but this hasn't been the case for decades now. This discussion's come up a few times, and nobody's managed to find a modern OS that supports directory hardlinks so far.
I shudder to think that a file system would risk the real possibility of recursion when directories are hard linked.
Maybe a wee bit off topic, but maybe not, Rob Pike (Bell Labs then, now at Google) wrote an interesting paper on getting '..' right after the introduction of symbolic (soft) links:
Lexical File Names in Plan 9 or Getting Dot-Dot Right
Certainly an interesting read.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi,
what is link? and soft link? how about hard one and symbolic link.
and inode.
i get confuse about this links. could anyone help me with full explainsion?
thks
Gusla (5 Replies)
Discussion started by: gusla
5 Replies
2. UNIX for Dummies Questions & Answers
Would I be correct in assuming that find doesn't bother recursivley searching down sim links. (It doesn't seem to so I guess it doesn't!!!) Is there anyway to make it do so? (3 Replies)
Discussion started by: peter.herlihy
3 Replies
3. UNIX for Dummies Questions & Answers
hi, i am in a directory, have 2 files as below
then do a ls -l gives the below
lrwxrwxrwx 1 root system 23 Mar 08 2001 filea -> /adir/filea
lrwxrwxrwx 1 root system 23 Mar 08 2001 filea -> /adir/fileb
now, when i do a cd /adir, the system said, adir not... (5 Replies)
Discussion started by: yls177
5 Replies
4. Shell Programming and Scripting
I am digging for certain types of files in the current directory and all its sub-directories and archiving them with the following code:
#! /usr/bin/ksh
Archive=`date +%Y_%m_%d_%T`
find . -type f \( -name \*\.ksh -o -name \*\.sql -o -name \*\.ini \) -print|xargs tar -cf... (4 Replies)
Discussion started by: manthasirisha
4 Replies
5. AIX
Hi
I'm logged in as root in an aix box
Which command will list all the soft links and hard links present in the server ? (2 Replies)
Discussion started by: newtoaixos
2 Replies
6. UNIX for Dummies Questions & Answers
Hai,
give me a simple example for soft and hard links.
this will work for soft link ?? ln -s (2 Replies)
Discussion started by: Ramesh M
2 Replies
7. Shell Programming and Scripting
Hi team, i am writing a purge script to delete softlinks and hardlinks on linux system which are 3/10/30 days old. To test the script i need to create links with old timestamp, i am able to cange timestamp for files but not for links.
i tried touch -h option but this option is not available on... (1 Reply)
Discussion started by: Satyak
1 Replies
8. UNIX for Dummies Questions & Answers
Hello,
I would like to create symbolic links for a series of files in my cwd (after confirming that the links don't already exist). The above files all have a similar prefix, but different extensions.
I created a shell script like shown below and I get an error message "No such file or... (4 Replies)
Discussion started by: Gussifinknottle
4 Replies
9. UNIX for Dummies Questions & Answers
Hello.
I have some main directories.
For example :
/main_dir1
/main_dir2In main_dir2, I have a sub dir named sub_dir2-1 with 2 files in it ( file_2-1, file_2-2 )
/main_dir2sub_dir2-1file_2-1
file_2-2From "/main_dir1/A/B/C" I make a soft link
ln -s /main_dir2/sub_dir2-1 ... (6 Replies)
Discussion started by: jcdole
6 Replies
10. UNIX for Advanced & Expert Users
Hi. Can somebody tell me if there's a way of creating a symbolic link from a directory on one filesystem to that on another that will allow a find command that doesn't use the -L param to locate a particular file under that new 'linked' dir. With a normal sym link the find command on that... (6 Replies)
Discussion started by: user052009
6 Replies