Basic Linux Commands

Day - 3 #90daysofdevoschallenge

To view what's written in a file.

cat file1.txt

To change the access permissions of files.

chmod 755 file1.txt

The 755 means the owner has full access to read, write, and execute the file, while the group members and all other users have read and execute permissions but no write permissions.

To check which commands you have run till now.

history

To remove a directory/ Folder.

rmdir < directory_name > ## delete empty directory

rm -r < directory_name > ## -r is used for recursive

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

touch fruits.txt

cat fruits.txt

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

The -e option Is used for enabling interpretation of backslash escapes.

To Show only top three fruits from the file.

head is a command-line utility in Linux used to display the beginning portion of a file or output from a command.

The -n is used to print the lines from a file.

To Show only bottom three fruits from the file.

tail is a command-line utility in Linux used to display the end portion of a file or output from a command.

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.

Task -11 To find the difference between fruits.txt and Colors.txt file.

The diff command in Linux is used to compare two files line by line and display the differences between them.

diff fruits.txt Colors.txt