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First of all, what file system is the directory on? If it is a Linux filesystem such as ext4, use the chmod command. If it is on a fat32 or ntfs filesystem, then you can't change the permissions of a single directory, only all of them in the mount command options.
chmod ug=rwx,o=rx <dirname>
chmod 0775 <dirname>
You should provide more information. Such as where the directory is. In your $HOME directory?
"drwxr-xr-x" means "A directory (d), having all read/write/execute (rwx i.e. 4+2+1=7) permissions for owner, read/execute (r-x i.e. 4+0+1=5) for group, and read/execute (r-x i.e. 4+0+1=5) for others". Or, in order words, permission is simply 755. And you can sum up it as:
r - read (4)
w - write (2)
x - execute (1)
And if you want to change it to "drwxrwxr-x", then it means you want to change it to "all read/write/execute (rwx i.e. 4+2+1=7) permissions for owner, all read/write/execute (rwx i.e. 4+2+1=7) permissions for group, and read/execute (r-x i.e. 4+0+1=5) for others" i.e. you want to set it to 775. Therefore do it as:
~$ chmod 775 <directoryname>
Last edited by shivaa; 03-22-2013 at 10:26 AM.