LINUX COMMANDS

What Does The Echo Command Do?

Is There an echo in Here?

The echo command displays a message on the screen and is primarily useful for programmers writing shell scripts (see "Linux Programming"). But anyone can use echo to show the value of environment variables. The echo command displays a message on the screen and is primarily useful for programmers writing shell scripts (see "Linux Programming"). But anyone can use echo to show the value of environment variables. Here are some examples:

echo $PATH
/usr/bin:/usr/local/bin
echo My name is $USER - Home directory=$HOME.
My name is hermie - Home directory=/home/hermie.

The echo command is very similar to the DOS command of the same name, except that the DOS echo command cannot display environment variables--it just displays a message.

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