February 2004
Beginner
200 pages
5h 40m
English
echo | Print simple text on standard output |
printf | Print formatted text on standard output |
yes | Print repeated text on standard output |
seq | Print a sequence of numbers on standard output |
clear | Clear the screen or window |
Linux provides several commands for printing messages on standard output, in case you like to talk to yourself:
$ echo hello world hello world
Each command has different strengths and intended purposes. These commands are invaluable for learning about Linux, debugging problems, and writing shell scripts (see Programming with Shell Scripts).