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landing/docs/commands/access/chmod.md

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+# The `chmod` command
+
+The `chmod` command allows you to change the permissions on a file using either a symbolic or numeric mode or a reference file.
+
+### Examples:
+
+1. Change the permission of a file using symbolic mode:
+
+```
+chmod u=rwx,g=rx,o=r myfile
+```
+
+The command above means :
+
+- user can read, write, execute `myfile`
+- group can read, execute `myfile`
+- other can read `myfile`
+
+2. Change the permission of a file using numeric mode
+
+```
+chmod 754 myfile user:group file.txt
+```
+
+The command above means :
+
+- user can read, write, execute `myfile`
+- group can read, execute `myfile`
+- other can read `myfile`
+
+3. Change the permission of a folder recursively
+
+```
+chmod -R 754 folder
+```
+
+### Syntax:
+
+```
+chmod [OPTIONS] MODE FILE(s)
+```
+
+- `[OPTIONS]` :
+  `-R`: recursive, mean all file inside directory
+
+- `MODE`: different way to set permissions:
+
+- **Symbolic mode explained**
+
+  - u: user
+  - g: group
+  - o: other
+  - =: set the permission
+  - r: read
+  - w: write
+  - x: execute
+  - example `u=rwx` means user can read write and execute
+
+- **Numeric mode explained**:
+  
+The **numeric mode** is based off of a binary representation of the permissions for user, group, and others, for more information please look at this [explanation](https://www.digitalocean.com/community/tutorials/linux-permissions-basics-and-how-to-use-umask-on-a-vps#types-of-permissions) from Digital Ocean's community section:
+
+  - 4 stands for "read",
+  - 2 stands for "write",
+  - 1 stands for "execute", and
+  - 0 stands for "no permission."
+  - example 7 mean read + write + execute