Head and Tail

PREAMBLE

Tutorial expresses the author's subjective ideas and conform to AAL license.

Description

head is used to display first n lines or bytes of the file.

tail is used to display last n lines or bytes of the file

Intro

Open terminal.app and type something random, like that:

$ echo -e "siglsjgnsgnsjngsjn \

\n ksjbgkzjvbkzjbvzkj \

\nkjvbkjbvkjvbkjbvkjb \

\n kxjvbnkjxnkjxvxkjkjnzl \

\njbvjxbvkjxbvkxjvbkj > /tmp/some.text.file.txt

$ cat /tmp/random.text.file.txt

Next level

Output first 3 lines of a file

$ head -n 3 /tmp/random.text.file.txt

$ tail -n 3 /tmp/random.text.file.txt

Output first 49 bytes of a file

$ head -c 49 /tmp/random.text.file.txt

$ head -c 49 /tmp/random.text.file.txt

Last thoughts

Be shure that I will update tutorial in the future. So, stay on tune. And, in case it was useful, share please with your fellows or comment something regarded the subject.

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