Linux tip: How to use the od command

The video tutorial introduces the 'odd' command, which allows users to view the content of various file types, including text, image, and executable files, in different formats. It explains how 'odd' is more flexible than its name suggests, providing examples of viewing PNG, JPEG, and Linux executable files. The tutorial highlights the importance of file identifiers like 'PNG' and 'ELF' and explains how 'odd' displays data in octal and ASCII formats. It also briefly covers using 'odd' to view text files, although this is less common.

What is the primary function of the 'od' command?

• To display file contents in various formats

• To delete files

• To compress files

• To edit files

What does the 'PNG' string signify when using the 'od' command on a file?

• The file is corrupted

• The file is a PNG image

• The file is a text document

• The file is an executable

What information does each chunk in a PNG file contain?

• Only the chunk length and data

• Only the chunk data

• The chunk type and CRC value

• The chunk length, type, data, and CRC value

What does the 'elf' identifier indicate in a file?

• The file is a PNG image

• The file is a text document

• The file is a Linux executable

• The file is a compressed archive

Why is using 'od' on text files generally not useful?

• It only shows how letters look in octal

• It corrupts the text file

• It doesn't display any content

• It only shows binary data