m: cd ~/testdir</code>
Then at the Linux prompt, type,
<code>compsci-user@tim: cp /vol/examples/tutori... er how?). Then, inside the **testdir** directory, type
<code>compsci-user@tim: mv science.bak backups/.</code>
Type **ls** and **ls backups** to see if it has worked... en delete it.
Inside your **testdir** directory, type
<code>compsci-user@tim: cp science.txt tempfile.
write the contents of a file to the screen.
Now type **cat** without specifing a file to read
<code>compsci-user@tim:~$ cat</code>
Then type a few words on the keyboard and press the [Return... file called **list1** containing a list of fruit, type
<code>compsci-user@tim:~$ cat > list1</code>
Then type in the names of some fruit. Press [**Return**] af
y (access rights)====
In your testdir directory, type
<code>compsci-user@tim:~$ ls -l (l for long list... ons on the file biglist for the group and others, type
% chmod go-rwx biglist
This will leave the othe... processes, with their associated PID and status, type
<code>compsci-user@tim:~$ ps</code>
A process m... background processes===
To background a process, type an & at the end of the command line. For example,
ved.
To find out what is in your home directory, type
<code>
compsci-user@tim:~$ ls
</code>
The **ls** ... ory including those whose names begin with a dot, type
<code>
compsci-user@tim:~$ ls -a
</code>
{{:help... alled unixstuff in your current working directory type
<code>compsci-user@tim:~$ mkdir testdir</code>
To see the directory you have just created, type
<code>compsci-user@tim:~$ ls</code>
==== 1.3 C
or.
b) A public method called "imageOf", with a type double parameter "x" and a type double
return type. Let its body be such that it always returns "Double.NaN". Recall
that Double is a class, not a pod-type. NaN is short for Not A Number.
c) A public met
rectory containing the package's source code.
- Type **./configure** to configure the package for your system.
- Type **make** to compile the package.
- Optionally, type **make check** to run any self-tests that come with the package.
- Type **make install** to install the programs and any
r current quota and how much of it you have used, type
<code>compsci-user@tim:~$ quota -v</code>
===df... ind out how much space is left on the fileserver, type
<code>compsci-user@tim:~$ df .</code>
===du===
... ctory has the most files. In your home-directory, type
<code>compsci-user@tim:~$ du</code>
===compress... e, thus freeing valuable disk space. For example, type
<code>compsci-user@tim:~$ ls -l science.txt</cod
es to itself in the WeScheme's Interactions pane. Type in some numbers (one at a time, then hit Enter):
... , and ''/''
Once again in the Interactions pane, type in some Scheme expressions (and hit enter to eval... expressions from scratch every time, I could just type in their names?"//
We've been ignoring half of t... want to be a Computer Scientist!")
</code>
If you type these definitions into the Definitions pane, you
=
An example of an environment variable is the OSTYPE variable. The value of this is the current operating system you are using. Type
<code>compsci-user@tim:~$ echo $OSTYPE</code>
More examples of environment variables are
* USER (y... command.
To show all values of these variables, type
<code>compsci-user@tim:~$ printenv | less</code>
nswer.</p>
<p><strong>Question 1.1:</strong> What type of edits did you need to make to the data pass th... de>transform-column</code> can return a different type from its input type.</p>
<p>Give your new table the name <code>student-data-cleaned</code>. We'll ... n <strong>any</strong> table that has a column of type <code>Boolean</code>. Use this helper function t
s
* Chapter 7: Java Object Model
* Java Type system
* Type Inquiry
* Object Class
* Shallow and Deep Copy - Cloning
* Serial... shallow copy and deep copy
* Reflection and type inquiry
* Generics / wildcards
One page o... shallow copy and deep copy
* Reflection and type inquiry
* Generics / wildcards
*/
----
<htm
can experiment.
* In the interactions window, type:<code>
››› 1
</code> and press enter. This gets e... window. In future labs and assignments, you will type
in your own code, but for the purposes of this la... f data expressions
# <YOUR NAME>
# Numbers are a type of data.
# - The following expression adds number... rs.
(40 + 1) + 1
# Strings (of characters) are a type of data.
# - The following expression appends str
gin programming!
- In the interactions window, type:<code>
››› 1
</code> and press ''enter''. This ge... window. In future labs and assignments, you will type
in your own code, but for the purposes of this la... f data expressions
# <YOUR NAME>
# Numbers are a type of data.
# - The following expression adds number... rs.
(40 + 1) + 1
# Strings (of characters) are a type of data.
# - The following expression appends str