Question

Write Linux command lines to do the following:

1. Create a directory with name “yourName_ID”

2. Create a file with name “yourLastName.txt” inside the directory created in step.1

3. Write inside the created file exactly the following content (you may use editors such as vim, pico, ….): Linux Lab Lab. ToDo#1 Summer Semester 2019/2020#

4. Display the first 2 lines of the file.

5. Change the permission of the file to read write and execute for owner, groups and others.

6. Combine all lines in one line, separate lines with “-” character. Show your result only on standard output.

7. Replace word Lab to LAB for all matches.

8. Search for the lines that does not end with the character “.” or “#”

9. Search for the lines that contains a sequence of minimum 2 numbers and maximum 5 numbers.

10. Replace the space character with the “-” character for the output of date command.

Answer 1

assumed your id is : abc_123
assumed last name : xyz

Step 1
*******
mkdir abc_123

Step 2
********
cd abc_123
touch xyz.txt

Step 3
*********

Linux Lab Lab.
ToDo#1 Summer Semester 2019/2020#

Step 4
********
head -n 2 xyz.txt

Step 5
*********
chmod 777 xyz.txt

Step 6
********
cat xyz.txt | awk '{print}' ORS='" '

Step 7
********
sed 's/Lab/LAB/g' xyz.txt

Step 8
***********
grep -E '.' xyz.txt | grep -E '#'

Step 9
**********
grep -E '[0-9]{2}' xyz.txt | grep -E '[0-9]{5}'

Step 10
*********
date | sed 's/ /-/g'

Step 10
************

if you have any doubt then please ask me without any hesitation in the comment section below , if you like my answer then please thumbs up for the answer , before giving thumbs down please discuss the question it may possible that we may understand the question different way and i can edit and change the answers if you argue, thanks :)