204.11.230.89: /* Examples */

2005-10-01T02:53:46Z

‎Examples

Dr Kludge: Init from PHPWiki

2005-09-25T23:58:36Z

Init from PHPWiki

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[[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 a [[echo]] can be used to create files. The output of [[echo]] is sent to the file called '''cash.out'''. The greater than sign, > is used with a technique called [[redirection]].

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.

[[Category:Useful Linux Commands]]

@@ Line 7: / Line 7: @@
   echo 'Show me the money' > cash.out
-This version shows how a [[echo]] can be used to create files.  The output of [[echo]] is sent to the file called '''cash.out'''.  The greater than sign, > is used with a technique called [[redirection]].
+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 - Revision history

204.11.230.89: /* Examples */

Dr Kludge: Init from PHPWiki