Ownership, while like above not relevant for access to the file pointed to by the symlink on most systems, can have some other relevance wrt the t bit of the parent directory or quotas. On systems where symlink permissions matter (like OS/X where you need read permission to a symlink to be able to resolve its target), there's generally a way to change them ( chmod -h on OS/X). On most systems, permissions on symlinks are ignored and generally fixed to rwxrwxrwx. Hard links also allow files to have multiple names, but they do it differently. By definition, a soft link is not a standard file, but a special file that points to an existing file. Here is an example of a soft link Here’s a way to create hard and soft links in Linux Hard link While we are on the subject of links, we need to mention that there is a second type of link called hard links. Portably, your best option is to remove the link first and then recreate it: rm -f link & ln -s new/target link Commonly referred to as symbolic links, soft links link together non-regular and regular files. It works like -T except when link is actually a real directory in which case it will still create the symlink inside that directory (instead of failing with an error). Like before, it will remove the original link symlink and create it anew with new/target as the target (and the process' euid and egid as the owner). To overcome that, GNU ln has a -T option for the link name to always be considered as link name, and not as a directory to create the link(s) in. Hard links more flexible and remain linked even if the original or linked files are moved throughout the file system, although hard links are unable to cross different file systems. So you'll actually create a: foo/bar/target -> new/target Hard Links Each hard linked file is assigned the same Inode value as the original, therefore they reference the same physical file location. That's understood as creating a new target symlink inside the link directory ( link is a directory because it's a symlink to the foo/bar directory). Dillion Megida A symlink (also called a symbolic link) is a type of file in Linux that points to another file or a folder on your computer. In that case, when you do: ln -s new/target link Will fail because link already exists, but you can overcome that by using the standard: ln -fs new/target linkįoo/bar is a directory (and you have search permission to foo to be able to determine that foo/bar is a directory). When you have a link like: link -> foo/barĪnd want to change it to: link -> new/targetįoo/bar is not a directory or doesn't exist or you don't have search access to foo.
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