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When using sudo you will be prompted for your password.
Only users with administrative privileges are allowed to use sudo.
Experienced users who work with many different Linux distributions therefore find it easier to learn commands that can be used in all varieties of Ubuntu and, indeed, in other Linux distributions as well.
It is important, of course, to know how to use the terminal - and anyone who can manage typing, backspacing, and cutting and pasting will be able to use the terminal (it is not more difficult than that).
But say you wanted to have 4 or 5 checks, the answer may be to write 4 or 5 statements but that's not the most practical way. Application stdout ( what you see on the terminal screen, with an un-piped application ) can be saved and used in Bash.
The simplest and most elegant way is to use command substitution, by wrapping the code in $(...) Bash lets you create a function on the fly, really handy if you plan on using a code block more then once.
That's fine and dandy, but what if I want to copy my file to another directory? Let's say instead of copying /path/to/conf_to the /path/to/ directory, you want to copy it to a directory where you store all of your backup files, say /my/backup/folder/.
In order to accomplish this you would type: You can create a bash script by opening your favorite text editor to edit your script and then saving it (typically the file extension is used for your reference, but is not necessary. An if statement can be used to check for something and do something else depending on the outcome of the check.
Let's suppose that another user has accidentally moved one of your documents from your Documents directory to the root directory.
Normally, to move the document back, you would type mv /~/Documents/mydoc.odt, but by default you are not allowed to modify files outside your home directory.
You then click on that, and you'll see the full list.
Then you can go to Accessories -The sudo command executes a command with administrative privileges (root-user administrative level), which is necessary, for example, when working with directories or files not owned by your user account.
is one of the most basic applications to pipe data through that uses a basic scripting syntax. Let's do a normally complicated task, transforming a string to all uppercase.