**File Permission on Linux**

a) Number for permission
<code bash>
4 Read
2 Write
1 Execute

1 Owner User
2 Group
3 Other

Example 600, 777
</code>

b) File permission explanation
<code bash>
drwxrwxrwx 
d=directory
r=read
w=write
x=execute

Example 0777
</code>

c) Change permission
<code bash>
chmod 777 yourfile
</code>

d) Change ownership of a file
<code bash>
chown root,root yourfile
</code>