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bash-hackers-wiki/docs/dict/hardlink.md

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# Hardlink
Also the article for:
- filename
Fix hyperlinks of markdown pages at depth 2 find docs/ -depth 2 -name '*.md' | xargs grep '(.*/' -l | \ xargs -I{} \ sed -i '' \ -e 's%(/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)\(.md\)\{0\})%(../\1/\2.md)%g' \ -e 's%(/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)#\([0-9a-zA-Z_-][0-9a-zA-Z_-]*\))%(../\1/\2.md#\3)%g' \ -e 's%(/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)\(.md\)\{0\})%(../\1/\2/\3.md)%g' \ -e 's%(/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)#\([0-9a-zA-Z_-][0-9a-zA-Z_-]*\))%(../\1/\2/\3.md#\4)%g' \ -e 's%](\([^:.>)#][^:.>)#]*\))%](../\1.md)%g' \ -e 's%](\([^:.>)#][^:.>)#]*\)#\([^:.>)#][^:.>)#]*\))%](../\1.md#\2)%g' \ {} Related to https://github.com/flokoe/bash-hackers-wiki/issues/10
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A hardlink associates a *filename* with a [file](../dict/terms/file.md). That
Convert files under dict to Markdown
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name is an entry in a directory listing. Of course a file can have more
hardlinks to it (usually the number of hardlinks to a file is limited),
but all hardlinks to a file must reside on the same
Fix hyperlinks of markdown pages at depth 2 find docs/ -depth 2 -name '*.md' | xargs grep '(.*/' -l | \ xargs -I{} \ sed -i '' \ -e 's%(/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)\(.md\)\{0\})%(../\1/\2.md)%g' \ -e 's%(/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)#\([0-9a-zA-Z_-][0-9a-zA-Z_-]*\))%(../\1/\2.md#\3)%g' \ -e 's%(/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)\(.md\)\{0\})%(../\1/\2/\3.md)%g' \ -e 's%(/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)#\([0-9a-zA-Z_-][0-9a-zA-Z_-]*\))%(../\1/\2/\3.md#\4)%g' \ -e 's%](\([^:.>)#][^:.>)#]*\))%](../\1.md)%g' \ -e 's%](\([^:.>)#][^:.>)#]*\)#\([^:.>)#][^:.>)#]*\))%](../\1.md#\2)%g' \ {} Related to https://github.com/flokoe/bash-hackers-wiki/issues/10
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[filesystem](../dict/terms/filesystem.md) as the file itself!
Convert files under dict to Markdown
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What you usually call a file is just a name for that file, and thus, a
hardlink.
Fix hyperlinks of markdown pages at depth 2 find docs/ -depth 2 -name '*.md' | xargs grep '(.*/' -l | \ xargs -I{} \ sed -i '' \ -e 's%(/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)\(.md\)\{0\})%(../\1/\2.md)%g' \ -e 's%(/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)#\([0-9a-zA-Z_-][0-9a-zA-Z_-]*\))%(../\1/\2.md#\3)%g' \ -e 's%(/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)\(.md\)\{0\})%(../\1/\2/\3.md)%g' \ -e 's%(/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)#\([0-9a-zA-Z_-][0-9a-zA-Z_-]*\))%(../\1/\2/\3.md#\4)%g' \ -e 's%](\([^:.>)#][^:.>)#]*\))%](../\1.md)%g' \ -e 's%](\([^:.>)#][^:.>)#]*\)#\([^:.>)#][^:.>)#]*\))%](../\1.md#\2)%g' \ {} Related to https://github.com/flokoe/bash-hackers-wiki/issues/10
2024-01-29 02:01:50 +01:00
The difference between a [symbolic link](../dict/terms/symlink.md) and a hard
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link is that there is no easy way to differentiate between a \'real\'
file and a hard link, let\'s take a look at the example:
\* create an empty file
$ touch a
\* create a hard link \'b\' and sym link \'c\' to empty file
$ ln a b
$ ln -s a c
as you can see file(1) can\'t differentiate between a real file \'a\'
and a hard link \'b\', but it can tell \'c\' is a sym link
$ file *
a: empty
b: empty
c: symbolic link to `a'
`ls -i` prints out the inode numbers of files, if two files have the
same inode number AND are on the same file system it means they are
**hardlinked**.
$ ls -i *
5262 a 5262 b 5263 c
hard links don\'t consume additional space on the filesystem, the space
is freed when the last hard link pointing to it is deleted.
## See also
Fix hyperlinks of markdown pages at depth 2 find docs/ -depth 2 -name '*.md' | xargs grep '(.*/' -l | \ xargs -I{} \ sed -i '' \ -e 's%(/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)\(.md\)\{0\})%(../\1/\2.md)%g' \ -e 's%(/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)#\([0-9a-zA-Z_-][0-9a-zA-Z_-]*\))%(../\1/\2.md#\3)%g' \ -e 's%(/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)\(.md\)\{0\})%(../\1/\2/\3.md)%g' \ -e 's%(/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)#\([0-9a-zA-Z_-][0-9a-zA-Z_-]*\))%(../\1/\2/\3.md#\4)%g' \ -e 's%](\([^:.>)#][^:.>)#]*\))%](../\1.md)%g' \ -e 's%](\([^:.>)#][^:.>)#]*\)#\([^:.>)#][^:.>)#]*\))%](../\1.md#\2)%g' \ {} Related to https://github.com/flokoe/bash-hackers-wiki/issues/10
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- [file](../dict/terms/file.md)
- [filesystem](../dict/terms/filesystem.md)
- [symlink](../dict/terms/symlink.md)
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