Write arguments to standard output (POSIX)
echo [-n] [string...]
- Don't write a trailing newline character.
- A string to be written to standard output.
The echo command is present both as a shell builtin (see the echo command for ksh ) and as a standalone executable that can operate without the availability of the system shell. Both versions behave in a similar manner. To make sure you use the executable, specify the full path.
The echo utility writes its arguments, followed by a newline character, to standard output. If there are no arguments, only the newline character is written.
The echo utility supports the following escape sequences within string:
|\a||Write an alert character (the bell).|
|\b||Write a backspace character.|
|\c||Suppress the newline character that otherwise follows the final argument in the output. All characters following the \c in the arguments are ignored.|
|\f||Write a formfeed character.|
|\n||Write a newline character.|
|\r||Write a carriage-return character.|
|\t||Write a tab character.|
|\v||Write a vertical tab character.|
|\\||Write a backslash character.|
|\0 num||Write an 8-bit value that's the ASCII character represented by the specified 1-, 2-, or 3-digit octal number num.|
The escape sequences listed above are extensions to POSIX.
Echo the string Hello, Mother\nHello, Father to the standard output (note that echo appends a final trailing newline):
$ echo 'Hello, Mother\nHello, Father' Hello, Mother Hello, Father $
- Successful completion.
- An error occurred.
Last modified: 2013-12-21