freeCodeCamp/index.md at dc8049df43b473499610438eca35fbc0589f0c79

Files

Máté Szőnyi 8e4b2795ab Add a "tip" section to the article (#29865 )

* Add a "tip" section to the article

With 1 tip for a frequent error I got when I started using bash

* Fixed formatting issues

2018-11-05 02:01:23 -05:00

title

title
Bash Cat

Bash Cat

cat is one of the most frequently used commands in Unix operating systems.

cat is used to read a file sequentially and print it to the standard output. The name is derived from its function to concatenate files.

cat [options] [file_names]

Most used options:

-b, number non-blank output lines
-n, number all output lines
-s, squeeze multiple adjacent blank lines
-v, display non-printing characters, except for tabs and the end of line character

Print in terminal the content of file.txt:

cat file.txt

Concatenate the content of the two files and display the result in terminal:

cat file1.txt file2.txt

Tip: Using cat on a directory will cause error, so make sure it's a readable file.