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| -rw-r--r-- | files_directories/chmod.md | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/files_directories/chmod.md b/files_directories/chmod.md new file mode 100644 index 0000000..abddd7e --- /dev/null +++ b/files_directories/chmod.md @@ -0,0 +1,18 @@ +We are aware of permissions for the owner(u), group(g), and other(o), however +the set-uid, set-gid and sticky bit are other special permissions. + +| setting | description | +| set-uid | setting uid on an executable file allows the file to be executed +with the original owners permissions.e.g.A script owned by root is executed +with root priviledges when run by an ordinary user| +|set-gid | in files, set-gid files are executed with the group's permissions, +while in directories all new files belong to the group by default| +|sticky bit | In a shared environment, allows deletion only by the owner of the +file| + +``` +chmod u+s file # sets uid, use - to unset +chmod g+s directory # sets gid +chmod +t # sets the sticky bit +chmod 1770 directory # sets sticky bit, grants rwx permissions for u and g +``` |