Name
echo -- display a line of text
Synopsis
| echo [OPTION]... [STRING]...  | 
Description
Unlike the behavior specified in the SUS, echo
does support options.
Behavioral differences are listed below.
Differences
- -n
- does not output the trailing newline. 
- -e
- enables interpretation of specific backslash-escaped characters. 
- -E
- disables interpretation of those sequences in STRINGs. 
- --version
- outputs version information and exits; should be alone.