Echo command
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A command shell built-in function available on most Linux platforms; used to display a line of text on the terminal (or command line.)
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Usage Syntax
echo [options] text
Common options include;
- -n - do not output the trailing new line
Usage Examples
echo hello world
echo $HOME
echo -n $HOME
Typical Output
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steve@test-laptop:~$ echo hello world hello world
steve@test-laptop:~$ echo $HOME /home/steve
steve@test-laptop:~$ echo -n $HOME /home/stevesteve@test-laptop:~$
Usage Notes
As shown above, the environment variables can be specified instead of actual text
Text containing spaces does not need to be enclosed in quotes: '
Special characters must be 'masked' with \
Linux Usage Notes
With most Linux or Unix commands;
- Non root users may need to prefix commands with the sudo command, for example: sudo chmod 644 *
- Brief help can be displayed using the -h or --help parameter, for example: chmod --help
- A full command manual can be displayed using the man command followed by the command name, for example: man chmod
- Sometimes 'info' pages are used instead of or to provide more information than man pages; for example: info chmod
- Version information can normally be display using the -v, -V or --version parameter, for example: chmod --version. However, this paramater is also frequently used to display verbose output.
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Related Files
The echo executable is normally found here: /bin/echo
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