Day 3 Task: Basic Linux Commands

Task: What is the linux command to:

• To view what's written in a file.

$ cat [filename]

• To change the access permissions of files.

$ chmod

• To check which commands you have run till now.

    $ history
  

• 

  To remove a directory/ Folder.

$ rm -r [folder name] ; remove the non-empty directory.
$ rm -d [folder name] ; remove the empty directory.

• To create a fruits.txt file and to view the content.

    $ touch fruits.txt ; create file
    $ cat frutis.txt ; view the content
  

• 

  Add content in fruits.txt (One in each line) - Apple, Mango, Banana, Cherry, Kiwi, Orange, Guava.

•   $ vim fruits.txt
  

• 

• To Show only top three fruits from the file.

$ head -n 3 fruits.txt

• To Show only bottom three fruits from the file.

$ tail -n 3 fruits.txt

• To create another file Colors.txt and to view the content.

$ touch colors.txt
$ cat colors.txt

• Add content in Colors.txt (One in each line) - Red, Pink, White, Black, Blue, Orange, Purple, Grey.

$ vim colors.txt

• To find the difference between fruits.txt and Colors.txt file.

    $ diff fruits.txt colors.txt