Basic Linux command (awk)

awk pattern scanning and processing language

awk command may not be pre-installed on all Linux distributions. To install it use

# Debian/Ubuntu
sudo apt install awk

To use awk, just type awk '{command}' filename

Here I'm using movies.txt as example

cat movies.txt
----
Title   Release Year    Budget  Profit (Approx.)        Studio  Genre
Avatar  2009    $237 million    ~$2.7 billion   20th Century Fox        Sci-Fi / Action
Avengers: Endgame       2019    $356 million    ~$2.2 billion   Marvel Studios  Superhero / Action
The Dark Knight 2008    $185 million    ~$894 million   Warner Bros.    Superhero / Crime Thriller
Titanic 1997    $200 million    ~$2.1 billion   20th Century Fox        Romance / Drama
Jurassic World  2015    $150 million    ~$1.3 billion   Universal Pictures      Sci-Fi / Adventure

Print all lines

Search Lines with a Keyword

Print Specific Columns

By default, awk uses space as separator, here I use tab as separator, so I need to set it as the separator.

Use of NR built-in variables to display line number

Use of NR built-in variables to display line 2 to 4

Use of NF built-in variables to display last field)

Print nonempty line with line number, first, second and last columns separated by -

Leave a comment if you have any questions.

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