Difference between revisions of "Echo"
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echo 'Show me the money' > cash.out | echo 'Show me the money' > cash.out | ||
− | This version shows how | + | This version shows how [[echo]] can be used to put text into a file. The greater than sign > is a shell [[redirection]], which causes the output of a given command to be redirected into the specified file. The output of [[echo]] is thus redirected into the file named '''cash.out'''. |
echo ^O^G | echo ^O^G |
Latest revision as of 02:53, 1 October 2005
echo is a Linux bash shell scripting command. Other shell scripting languages also have an echo command. The purpose of the command is to display text in your scripts.
Examples
echo $PATH
This version is used to look at the contents of a shell varaible. In this case, the contents of the PATH variable are displayed.
echo 'Show me the money' > cash.out
This version shows how echo can be used to put text into a file. The greater than sign > is a shell redirection, which causes the output of a given command to be redirected into the specified file. The output of echo is thus redirected into the file named cash.out.
echo ^O^G
echo can be used to set terminal settings. If you use the hat character, shift 6 key on US English keyboards, this sequence will not reset a foobared terminal. The hat character repersents the escape character, ASCII 27. The control key and [ key are used to create the escape character.