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Top Forums UNIX for Dummies Questions & Answers Need answer for these LINUX questions URGENT!! Post 302526901 by linux17 on Thursday 2nd of June 2011 12:04:07 AM
Old 06-02-2011
Need answer for these LINUX questions URGENT!!

I am very new to LINUX and could not find answer to these questions please submit your comments and suggestions to answer these questions.

Appreciate your time thank you, Smilie

1. Make sure there is no filename1.txt in current directory first. Now, enter vi with "vi filename1.txt" command. vi indicates that it is a new file. After you have completed entering text, you issue the VI command

:wq filename2.txt
to save and exit. Which file is created by VI editor? Explain.


2. Make sure there are no files called file1.txt and file2.txt in the current directory. Then, issue the following commands:
ln –s file1.txt file2.txt
ln –s file2.txt file1.txt
cat file1.txt
What is the error message you got? Explain why.

3. If you look at the permissions associated with a symbolic link, it has universal access. Does this lead to security issues? Why?


4. Review the man pages of ln, cp and mv commands. The synopsis section of the man pages contain the usage and the optional arguments are indicated within […]. From these 3 man pages, find out which command can work with just 1 argument. Give a sample usage and explain what it does.


5. Let us assume that Linux does not have .. entries in Linux directory structure. How will you cd to the parent directory of current directory? Note: Since current directory can be anything, you should give a generic answer (you should explain the process).

Moderator's Comments:
Mod Comment Homework. Closed.

Last edited by Scott; 06-02-2011 at 09:46 AM.. Reason: Closed thread
 

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load_dat_font(3alleg4)						  Allegro manual					    load_dat_font(3alleg4)

NAME
load_dat_font - Loads a FONT from an Allegro datafile. SYNOPSIS
#include <allegro.h> FONT *load_dat_font(const char *filename, RGB *pal, void *param) DESCRIPTION
Loads a FONT from an Allegro datafile. You can set param parameter to point to an array that holds two strings that identify the font and the palette in the datafile by name. The first string in this list is the name of the font. You can pass NULL here to just load the first font found in the datafile. The second string can be used to specify the name of the palette associated with the font. This is only returned if the pal parameter is not NULL. If you pass NULL for the name of the palette, the last palette found before the font was found is returned. You can also pass NULL for param, which is treated as if you had passed NULL for both strings separately. In this case, the function will simply load the first font it finds from the datafile and the palette that precedes it. For example, suppose you have a datafile named `fonts.dat' with the following contents: FONT FONT_1_DATA FONT FONT_2_DATA FONT FONT_3_DATA PAL FONT_1_PALETTE PAL FONT_2_PALETTE Then the following code will load FONT_1_DATA as a FONT and return FONT_1_PALETTE as the palette: FONT *f; PALETTE pal; char *names[] = { "FONT_1_DATA", "FONT_1_PALETTE" } f = load_dat_font("fonts.dat", pal, names); If instead you want to load the second font, FONT_2, from the datafile, you would use: FONT *f; PALETTE pal; char *names[] = { "FONT_2_DATA", "FONT_2_PALETTE" } f = load_dat_font("fonts.dat", pal, names); If you want to load the third font, but not bother with a palette, use: FONT *f; char *names[] = { "FONT_3_DATA", NULL } f = load_dat_font("fonts.dat", NULL, names); RETURN VALUE
Returns a pointer to the font or NULL on error. Remember that you are responsible for destroying the font when you are finished with it to avoid memory leaks. SEE ALSO
register_font_file_type(3alleg4), load_font(3alleg4) Allegro version 4.4.2 load_dat_font(3alleg4)
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