Recursive Permission Changes
To change the permissions of multiple files and directories with one command. Please note the
warning in the chmod with sudo section and the Warning with Recursive chmod section.
Recursive chmod with -R and sudo
To change all the permissions of each file and folder under a specified directory at once, use sudo
chmod with -R
user@host:/home/user$ sudo chmod 777 -R /path/to/someDirectory
user@host:/home/user$ ls -l
total 3
-rwxrwxrwx
drwxrwxrwx
-rwxrwxrwx
1 user user 0 Nov 19 20:13 file1
2 user user 4096 Nov 19 20:13 folder
1 user user 0 Nov 19 20:13 file2
How To User And Group Add
$ sudo adduser
To see the options for adding a user try the man command.
$ man adduser

Imagine a world without technology. Scary isn't it. I doubt many of us could part from our mobile phones or computers for more than a couple of days. Society was so different before these modern developments. Most of us would agree that technology has made life easier, quicker and more efficient. Lets find out how.

First off - televisions. It is funny to think there were barely three channels to begin with, each showing a couple of shows a day. Owning a television was considered a luxury and when it was switched on, it would turn in to a family event. Now however, TV's appear in several rooms of the house and if you have Sky, the channels are endless.

 [The theme of this collection is gadget/tech concepts that we feel "current technology", but has existed for a long time. Of course, this list is definitely not complete. If you know anything that matches the theme but I have missed, please suggest them in the comments. The main reason they are more widespread today is because of falling prices and advancements in processor speed and storage, making it more feasible. But if companies coming up with current products based on these old concepts act as though they inventted the concept, please send them a reminder.]

IBM Simon [First Smartphone. 1993 Also the first smartphone with touchscreen]

Popular download manager Tucan – pitched for use with online file sharing sites such as Mediafire, RapidShare and Megaupload – has added indicator-applet support in its latest alpha build, ahead of Ubuntu 11.04′s release this Thursday.