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Shell Programming and Scripting

Sample Practical

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# 1  
Old 05-21-2011
Sample Practical
Hello
Today I had a beautiful test to write some commands using Ubuntu, now I want to make sure of my answers to be reassured, if I had a mistake please correct me
  1. List all files details under ubuntu Desktop.

my answer:

Code:
cd Desktop |ls -l

  1. Navigate to your Desktop directory and write down the full path.

my answer:

Code:
pwd

  1. Create a directory under /home/ubuntu name the directory quiz.

my answer:
Code:
home@ubuntu:~$ mkdir ubuntu

home@ubuntu:~$ cd ubuntu

home@ubuntu:~/ubuntu$ mkdir quiz

home@ubuntu:~/ubuntu$ ls
quiz

home@ubuntu:~/ubuntu$ pwd

/home/home/ubuntu

  1. List all files which contain the letter p and redirect the output to a file under your quiz directory.

my answer:
Code:
ls p* > quiz

  1. Use grep command to extract the word time from ls manual and save the output to a file under your quiz directory.

my answer:

Code:
grep -t > quiz

  1. What does ls om*.su? do? Give an example for the output.

my answer:

Code:
list all files which content first letter o and second letter m and any letter in thread and have extension .su

  1. Student.txt file contains information about students which includes student Id,Student Name, subject, and Grade
Code:
04152:Jhon : COMP222:2 .5
04152:Smath : COMP222:3  
0123:Sara: COMP222:3
03234:Lea: COMP222:2.5

From this file use linux command extract student number and grade and save this information in a new file grade.txt

my answer:

Code:
cp Student.txt > grade.txt



[QUOTE=Chirel;302524109]
Last edited by Scott; 05-21-2011 at 07:54 PM.. Reason: Restore content removed by user; closed thread
# 2  
Old 05-21-2011
Hi,

Please could you read the rule 6 of the Rules here.
# 3  
Old 05-21-2011
Quote:
Originally Posted by S4K
Hello
Today I had a beautiful test to write some commands using Ubuntu, now I want to make sure of my answers to be reassured, if I had a mistake please correct me
Sorry but in my opinion look like you fail the test.

If you want comments , please edit your original post and re-format the post using [code] tags for code and data sample and correct the[list] tags.
Last edited by danmero; 05-21-2011 at 04:38 PM..
# 4  
Old 05-21-2011
Quote:
Originally Posted by danmero
Sorry but in my opinion look like you fail the test.

If you want comments , please edit your original post and re-format the post using [code] tags for code and data sample and correct the[list] tags.
Why do you think that? : (

The best way to learn! error! Even learn right and wrong.
# 5  
Old 05-21-2011
  • Code:
    ls ~/Desktop

  • Code:
    cd ~/Desktop && pwd

  • Code:
    mkdir -p /home/ubuntu/quiz

  • Code:
    ls *p*  > /home/ubuntu/quiz/file

  • Code:
    man ls | grep time > /home/ubuntu/quiz/ls.man.section

  • List all files beginning with om AND ending with .su
  • Code:
    awk -F: '{$0=$1 FS $NF}1' Student.txt > grade.txt


From here you can take the time to study each solution and you can search the forum for similar solution or read the manual for each command.
# 6  
Old 05-21-2011
Code:
home@ubuntu:~/Desktop$ mkdir -p /home/ubuntu/quiz
mkdir: cannot create directory `/home/ubuntu': Permission denied
home@ubuntu:~/Desktop$

# 7  
Old 05-21-2011
Still not working with the following ?
Code:
mkdir -p "$HOME/quiz"
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