Anonymous user
Open Source Comes to Campus/UMD/Laptop setup/Windows command line: Difference between revisions
Open Source Comes to Campus/UMD/Laptop setup/Windows command line (view source)
Revision as of 13:22, 25 February 2012
, 12 years ago→Absolute v. relative paths
imported>Jesstess No edit summary |
imported>Jesstess |
||
| (5 intermediate revisions by the same user not shown) | |||
Line 37:
<br />
<pre>cd
This will change you into the <code>
<br />
<pre>dir</pre>
You should see the names of all the files and directories in <code>C:\
<br />
<pre>cd ..</pre>
<code>..</code> means "parent directory", so this command moved you up to the parent directory. You were in <code>C:\
<br />
Line 55:
This lists the contents of the root directory, confirming where you are.
===Absolute v. relative paths===
====Tips====▼
When navigating the filesystem, you can use 2 kinds of paths: absolute and relative.
* You can use Tab to auto-complete directory and file names. So from inside the root directory, if you type <code>cd Pytho</code> and hit Tab, the command prompt will auto-complete the directory name, and you can then hit enter to change into the <code>C:\Python27</code> directory.▼
<b>Absolute paths</b>
* An absolute path contains the full set of directories from the root of the file system up to your target file or directory. On Windows, an absolute path starts with a drive like <tt>C:\</tt>.
* You can <tt>cd</tt> to an absolute path from anywhere on the filesystem.
* This is an example absolute path: <tt>C:\Users\jesstess\projects</tt>
<b>Relative paths</b>
* A relative path is calculated relative to your "current working directory" -- the directory you are currently in at a command prompt, as displayed by <tt>pwd</tt>.
* This is an example relative path: <tt>projects</tt>. That path only has meaning given a current working directory. If your current working directory were <tt>C:\Users\jesstess</tt>, then <tt>cd projects</tt> would take you to <tt>C:\Users\jesstess\projects</tt> assuming that such a directory existed. If you were in <tt>C:\Users\brad\Desktop</tt>, then <tt>cd projects</tt> would take you to <tt>C:\Users\brad\Desktop\projects</tt>.
▲* You can use Tab to auto-complete directory and file names. So from inside the root directory, if you type <code>cd
* The command prompt maintains a command history. You can use the up arrow to cycle through old commands.
* Note that the text that makes up the command prompt changes as you move around directories. The command prompt will always give the full directory path to your current directory.
===Review===
Answer these questions. Experiment at the command line if you need to! If you aren't sure about an answer, ask a helper.
# What directory are you in after starting a new command line prompt?
# After starting a new command line prompt, how would you get to the root directory?
# How do you check what files and directories are in your current working directory?
# If you are in directory <tt>C:\Users</tt>, and you want to get to <tt>C:\Users\jesstess\projects</tt>, how would you do that?
# What are 2 ways to avoid typing out a full navigation command? (hint: one requires that you've run the command before)
# What is the difference between <tt>cd Users</tt> and <tt>cd C:\Users</tt>?
===Success!===
| |||