Test1 < Embedded_Systems

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---+ A little test on what you have learned in the exercises on
---+ Linux command line and basics of C programming
---++ Linux commands:
   1 <p>Which Linux command do you use to list all files in a directory (folder)?</p>
   1 <p>How do you see hidden files and how do you recognize them?</p>
   1 <p>How do you see the file permissions?</p>
   1 <p>How can you find out your current working directory?</p>
   1 <p>In the following screen dump I show the contents of one of my directories. You see two directories named “.” and “..” . What do these mean?<br /><img alt="ls.png" height="122" src="%ATTACHURL%/ls.png" title="ls.png" width="595" /></p>
   1 <p>You downloaded the file “yesterday.txt” to your $HOME/Downloads directory. How do you copy this file to your current working directory?</p>
   1 <p>Which command do you use to see the content of yesterday.txt</p>
   1 <p>Which command do you use to list all lines containing the string “yesterday” in yesterday.txt?</p>
---++ C programming

   1 The ASCII equivalent of the character ‘0’ is 0x30<br />What does the following program print?<br /><br /><img alt="myascii.png" height="171" src="%ATTACHURL%/myascii.png" title="myascii.png" width="447" /><br /><br />
   1 You can write programs allowing the user to enter command line parameters. The following program “cl.c” does this. <br /><br /><img alt="cl.png" height="153" src="%ATTACHURL%/cl.png" title="cl.png" width="357" /><br /><br />What will it print if the user types: <br />./cl ike uli 25

Article text.

-- %USERSIG{UliRaich - 2017-10-02}%

---++ Comments

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Topic attachments
I	Attachment	History	Action	Size	Date	Who
png	cl.png	r1	manage	14.9 K	2017-10-02 - 15:21	UnknownUser
png	ls.png	r1	manage	17.1 K	2017-10-02 - 15:21	UnknownUser
png	myascii.png	r1	manage	14.0 K	2017-10-02 - 15:21	UnknownUser

Topic revision: r1 - 2017-10-02 - uli