LinuxBasicCommand

Task: What is the Linux command to

1. To view what's written in a file.
   >cat <file_name> cat name_file.sh

   #!/bin/bash NAME="john" echo $NAME echo "$NAME" echo "${NAME}!"

2. To change the access permissions of files.
   By using "chmod" command we can change the file permissions.
   >chmod 700 <filename>
>chmod u+rw <filename>
>chmod go+x <filename>

   

3. To check which commands you have run till now.
   >history

4. To remove a directory/ Folder.
   >rm <filename> >rm -r <directoryname>
>rm -rf <directoryname>

5. To create a fruits.txt file and to view the content.
   >nano friuts.txt >cat fruits.txt

6. Add content in devops.txt (One in each line) - Apple, Mango, Banana, Cherry, Kiwi, Orange, Guava.
   >nano devops.txt >echo "Apple" >> devops.txt >echo "Mango" >> devops.txt >echo "Banana" >> devops.txt >echo "Cherry" >> devops.txt >echo "Kiwi" >> devops.txt >echo "Orange" >> devops.txt

   >echo "Guava" >>devops.txt

7. To Show only top three fruits from the file.
   >head -3 devops.txt

8. To Show only the bottom three fruits from the file.
   >tail -3 devops.txt

9. To create another file Colors.txt and to view the content.
   >touch Colors.txt >cat Colors.txt

10. Add content in Colors.txt (One in each line) - Red, Pink, White, Black, Blue, Orange, Purple, and Grey.
    >echo "Red" >>Colors.txt

11. To find the difference between fruits.txt and Colors.txt file.
    >diff fruits.txt Colors.txt