echo
The echo utility provided as a psh applet can be used to print a line of text to standard output.
If used with -h parameter it prints the help message with possible arguments and parameters as follows:
Usage: echo [options] [string]
-h: shows this help message
To print a line of text using a echo the text must be specified as an argument. Following command:
echo foo bar
The command above will concatenate and print strings foo and bar (in that order, with a space between them) to the
standard output.
Exit code (of a program or an applet) can be displayed using a echo command:
echo $?