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Can I create a one way symlink?
Copy symlink AND where it points to using rsyncIs it possible to notify/warn that current path isn't a valid symlink anymore?Hot to make diff check a symlink link itself?Read target of symlink and increment target by oneCreate symlink - overwrite if one existsSymlink fallbackWhat idempotent command can I use to make a symlink pointing to a directory?Create hard link if possible, else use symlinkHow to get the filename of a symlink destination in a shell script?
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty
margin-bottom:0;
I want to create a one way symlink i.e. I can use it to go to the destination directory but I cannot go back.
Let's say there is a directory called D with two subdirectories S1 and S2. I want to create a link in S1 that points to S2 (let's say ls2 -> ../S2/). If I do cd ls2 and then cd .. then I want to go to D and not S1.
Is it possible?
symlink cd-command cwd
edited Oct 16 at 13:27
Gilles 'SO- stop being evil'
590k143 gold badges1213 silver badges1721 bronze badges
asked Oct 16 at 13:16
WYSIWYGWYSIWYG
3033 silver badges8 bronze badges
add a comment
|
I want to create a one way symlink i.e. I can use it to go to the destination directory but I cannot go back.
Let's say there is a directory called D with two subdirectories S1 and S2. I want to create a link in S1 that points to S2 (let's say ls2 -> ../S2/). If I do cd ls2 and then cd .. then I want to go to D and not S1.
Is it possible?
symlink cd-command cwd
edited Oct 16 at 13:27
Gilles 'SO- stop being evil'
590k143 gold badges1213 silver badges1721 bronze badges
asked Oct 16 at 13:16
WYSIWYGWYSIWYG
3033 silver badges8 bronze badges
7
All symlinks are unidirectional... The ability to go back depends on whether you remember from where you came. So shells do remembers, others don't. Many shells won't remember when you usecd -Pto change directory.
– AlexP
Oct 16 at 13:17
add a comment
|
I want to create a one way symlink i.e. I can use it to go to the destination directory but I cannot go back.
Let's say there is a directory called D with two subdirectories S1 and S2. I want to create a link in S1 that points to S2 (let's say ls2 -> ../S2/). If I do cd ls2 and then cd .. then I want to go to D and not S1.
Is it possible?
symlink cd-command cwd
edited Oct 16 at 13:27
Gilles 'SO- stop being evil'
590k143 gold badges1213 silver badges1721 bronze badges
asked Oct 16 at 13:16
WYSIWYGWYSIWYG
3033 silver badges8 bronze badges
I want to create a one way symlink i.e. I can use it to go to the destination directory but I cannot go back.
Let's say there is a directory called D with two subdirectories S1 and S2. I want to create a link in S1 that points to S2 (let's say ls2 -> ../S2/). If I do cd ls2 and then cd .. then I want to go to D and not S1.
Is it possible?
symlink cd-command cwd
symlink cd-command cwd
edited Oct 16 at 13:27
Gilles 'SO- stop being evil'
590k143 gold badges1213 silver badges1721 bronze badges
asked Oct 16 at 13:16
WYSIWYGWYSIWYG
3033 silver badges8 bronze badges
edited Oct 16 at 13:27
Gilles 'SO- stop being evil'
590k143 gold badges1213 silver badges1721 bronze badges
asked Oct 16 at 13:16
WYSIWYGWYSIWYG
3033 silver badges8 bronze badges
edited Oct 16 at 13:27
Gilles 'SO- stop being evil'
590k143 gold badges1213 silver badges1721 bronze badges
edited Oct 16 at 13:27
Gilles 'SO- stop being evil'
590k143 gold badges1213 silver badges1721 bronze badges
edited Oct 16 at 13:27
Gilles 'SO- stop being evil'
590k143 gold badges1213 silver badges1721 bronze badges
590k143 gold badges1213 silver badges1721 bronze badges
asked Oct 16 at 13:16
WYSIWYGWYSIWYG
3033 silver badges8 bronze badges
asked Oct 16 at 13:16
WYSIWYGWYSIWYG
3033 silver badges8 bronze badges
asked Oct 16 at 13:16
WYSIWYGWYSIWYG
3033 silver badges8 bronze badges
3033 silver badges8 bronze badges
7
All symlinks are unidirectional... The ability to go back depends on whether you remember from where you came. So shells do remembers, others don't. Many shells won't remember when you usecd -Pto change directory.
– AlexP
Oct 16 at 13:17
add a comment
|
7
All symlinks are unidirectional... The ability to go back depends on whether you remember from where you came. So shells do remembers, others don't. Many shells won't remember when you usecd -Pto change directory.
– AlexP
Oct 16 at 13:17
7
7
All symlinks are unidirectional... The ability to go back depends on whether you remember from where you came. So shells do remembers, others don't. Many shells won't remember when you use
cd -P to change directory.– AlexP
Oct 16 at 13:17
All symlinks are unidirectional... The ability to go back depends on whether you remember from where you came. So shells do remembers, others don't. Many shells won't remember when you use
cd -P to change directory.– AlexP
Oct 16 at 13:17
add a comment
|
1 Answer
1
active
oldest
votes
All symbolic links are one-way. As far as the kernel is concerned, after going into /D/S1 and running chdir("ls2"), you're in /D/S2, so if you run chdir(".."), you end up in /D.
If you do this in a shell, after
cd /D/S1
cd ls2
cd ..
you end up in /D/S1. The reason is that the shell does its own tracking of the current directory, and it remembers symbolic links.
You can't disable this shell behavior on a link-by-link basis, but you can disable it when you run the cd command. After running cd ls2, the shell remembers the current directory as /D/S1/ls2:
$ pwd
/D/S1
$ cd ls2
$ pwd
/D/S1/ls2
$ cd ..
$ pwd
/D/S1
To instruct the shell to forget its symlink-aware current directory tracking, pass the -P option to cd. The pwd command also has a -P option.
$ pwd
/D/S1
$ cd ls2
$ pwd
/D/S1/ls2
$ pwd -P
/D/S2
$ cd -P ..
$ pwd
/D
You can also forget the logical tracking when you change into the symlink:
$ pwd
/D/S1
$ cd -P ls2
$ pwd
/D/S2
$ cd ..
$ pwd
/D
answered Oct 16 at 13:27
Gilles 'SO- stop being evil'Gilles 'SO- stop being evil'
590k143 gold badges1213 silver badges1721 bronze badges
A small additional question if it is fine. Is there a way to make the file browser (thunar) forget the symlink track?
– WYSIWYG
Oct 31 at 12:29
@WYSIWYG I have no idea. You should ask that separately in a question tagged thunar.
– Gilles 'SO- stop being evil'
Oct 31 at 12:54
add a comment
|
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votes
All symbolic links are one-way. As far as the kernel is concerned, after going into /D/S1 and running chdir("ls2"), you're in /D/S2, so if you run chdir(".."), you end up in /D.
If you do this in a shell, after
cd /D/S1
cd ls2
cd ..
you end up in /D/S1. The reason is that the shell does its own tracking of the current directory, and it remembers symbolic links.
You can't disable this shell behavior on a link-by-link basis, but you can disable it when you run the cd command. After running cd ls2, the shell remembers the current directory as /D/S1/ls2:
$ pwd
/D/S1
$ cd ls2
$ pwd
/D/S1/ls2
$ cd ..
$ pwd
/D/S1
To instruct the shell to forget its symlink-aware current directory tracking, pass the -P option to cd. The pwd command also has a -P option.
$ pwd
/D/S1
$ cd ls2
$ pwd
/D/S1/ls2
$ pwd -P
/D/S2
$ cd -P ..
$ pwd
/D
You can also forget the logical tracking when you change into the symlink:
$ pwd
/D/S1
$ cd -P ls2
$ pwd
/D/S2
$ cd ..
$ pwd
/D
answered Oct 16 at 13:27
Gilles 'SO- stop being evil'Gilles 'SO- stop being evil'
590k143 gold badges1213 silver badges1721 bronze badges
A small additional question if it is fine. Is there a way to make the file browser (thunar) forget the symlink track?
– WYSIWYG
Oct 31 at 12:29
@WYSIWYG I have no idea. You should ask that separately in a question tagged thunar.
– Gilles 'SO- stop being evil'
Oct 31 at 12:54
add a comment
|
All symbolic links are one-way. As far as the kernel is concerned, after going into /D/S1 and running chdir("ls2"), you're in /D/S2, so if you run chdir(".."), you end up in /D.
If you do this in a shell, after
cd /D/S1
cd ls2
cd ..
you end up in /D/S1. The reason is that the shell does its own tracking of the current directory, and it remembers symbolic links.
You can't disable this shell behavior on a link-by-link basis, but you can disable it when you run the cd command. After running cd ls2, the shell remembers the current directory as /D/S1/ls2:
$ pwd
/D/S1
$ cd ls2
$ pwd
/D/S1/ls2
$ cd ..
$ pwd
/D/S1
To instruct the shell to forget its symlink-aware current directory tracking, pass the -P option to cd. The pwd command also has a -P option.
$ pwd
/D/S1
$ cd ls2
$ pwd
/D/S1/ls2
$ pwd -P
/D/S2
$ cd -P ..
$ pwd
/D
You can also forget the logical tracking when you change into the symlink:
$ pwd
/D/S1
$ cd -P ls2
$ pwd
/D/S2
$ cd ..
$ pwd
/D
answered Oct 16 at 13:27
Gilles 'SO- stop being evil'Gilles 'SO- stop being evil'
590k143 gold badges1213 silver badges1721 bronze badges
A small additional question if it is fine. Is there a way to make the file browser (thunar) forget the symlink track?
– WYSIWYG
Oct 31 at 12:29
@WYSIWYG I have no idea. You should ask that separately in a question tagged thunar.
– Gilles 'SO- stop being evil'
Oct 31 at 12:54
add a comment
|
All symbolic links are one-way. As far as the kernel is concerned, after going into /D/S1 and running chdir("ls2"), you're in /D/S2, so if you run chdir(".."), you end up in /D.
If you do this in a shell, after
cd /D/S1
cd ls2
cd ..
you end up in /D/S1. The reason is that the shell does its own tracking of the current directory, and it remembers symbolic links.
You can't disable this shell behavior on a link-by-link basis, but you can disable it when you run the cd command. After running cd ls2, the shell remembers the current directory as /D/S1/ls2:
$ pwd
/D/S1
$ cd ls2
$ pwd
/D/S1/ls2
$ cd ..
$ pwd
/D/S1
To instruct the shell to forget its symlink-aware current directory tracking, pass the -P option to cd. The pwd command also has a -P option.
$ pwd
/D/S1
$ cd ls2
$ pwd
/D/S1/ls2
$ pwd -P
/D/S2
$ cd -P ..
$ pwd
/D
You can also forget the logical tracking when you change into the symlink:
$ pwd
/D/S1
$ cd -P ls2
$ pwd
/D/S2
$ cd ..
$ pwd
/D
answered Oct 16 at 13:27
Gilles 'SO- stop being evil'Gilles 'SO- stop being evil'
590k143 gold badges1213 silver badges1721 bronze badges
All symbolic links are one-way. As far as the kernel is concerned, after going into /D/S1 and running chdir("ls2"), you're in /D/S2, so if you run chdir(".."), you end up in /D.
If you do this in a shell, after
cd /D/S1
cd ls2
cd ..
you end up in /D/S1. The reason is that the shell does its own tracking of the current directory, and it remembers symbolic links.
You can't disable this shell behavior on a link-by-link basis, but you can disable it when you run the cd command. After running cd ls2, the shell remembers the current directory as /D/S1/ls2:
$ pwd
/D/S1
$ cd ls2
$ pwd
/D/S1/ls2
$ cd ..
$ pwd
/D/S1
To instruct the shell to forget its symlink-aware current directory tracking, pass the -P option to cd. The pwd command also has a -P option.
$ pwd
/D/S1
$ cd ls2
$ pwd
/D/S1/ls2
$ pwd -P
/D/S2
$ cd -P ..
$ pwd
/D
You can also forget the logical tracking when you change into the symlink:
$ pwd
/D/S1
$ cd -P ls2
$ pwd
/D/S2
$ cd ..
$ pwd
/D
answered Oct 16 at 13:27
Gilles 'SO- stop being evil'Gilles 'SO- stop being evil'
590k143 gold badges1213 silver badges1721 bronze badges
answered Oct 16 at 13:27
Gilles 'SO- stop being evil'Gilles 'SO- stop being evil'
590k143 gold badges1213 silver badges1721 bronze badges
answered Oct 16 at 13:27
Gilles 'SO- stop being evil'Gilles 'SO- stop being evil'
590k143 gold badges1213 silver badges1721 bronze badges
answered Oct 16 at 13:27
Gilles 'SO- stop being evil'Gilles 'SO- stop being evil'
590k143 gold badges1213 silver badges1721 bronze badges
590k143 gold badges1213 silver badges1721 bronze badges
A small additional question if it is fine. Is there a way to make the file browser (thunar) forget the symlink track?
– WYSIWYG
Oct 31 at 12:29
@WYSIWYG I have no idea. You should ask that separately in a question tagged thunar.
– Gilles 'SO- stop being evil'
Oct 31 at 12:54
add a comment
|
A small additional question if it is fine. Is there a way to make the file browser (thunar) forget the symlink track?
– WYSIWYG
Oct 31 at 12:29
@WYSIWYG I have no idea. You should ask that separately in a question tagged thunar.
– Gilles 'SO- stop being evil'
Oct 31 at 12:54
A small additional question if it is fine. Is there a way to make the file browser (thunar) forget the symlink track?
– WYSIWYG
Oct 31 at 12:29
A small additional question if it is fine. Is there a way to make the file browser (thunar) forget the symlink track?
– WYSIWYG
Oct 31 at 12:29
@WYSIWYG I have no idea. You should ask that separately in a question tagged thunar.
– Gilles 'SO- stop being evil'
Oct 31 at 12:54
@WYSIWYG I have no idea. You should ask that separately in a question tagged thunar.
– Gilles 'SO- stop being evil'
Oct 31 at 12:54
add a comment
|
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All symlinks are unidirectional... The ability to go back depends on whether you remember from where you came. So shells do remembers, others don't. Many shells won't remember when you use
cd -Pto change directory.– AlexP
Oct 16 at 13:17