Editing redirection

The awk scripting language provides support for redirection via the greaterthan, doublebeak and pipe symbols. The greaterthan symbol acts as an output redirection operator allowing output from a function to be written to a named file. If the named file exists, its contents will be overwritten by the output from the function: {{{ awk BEGIN { # Creates a file foobar.txt # If the file already exists, its contents will be overwritten print "Hello" > foobar.txt } }}} A doublebeak symbol behaves in a similar manner to the greaterthan symbol, but instead of the file being overwritten, the output from the function will be appended to the end of the file: {{{ awk BEGIN { # Append a message to the end of the file foobar.txt print "Hello" >> foobar.txt } }}} == Redirection to standard error == The traditional way to redirect output to standard error is by using a kludge to pipeline redirection to an external cat command: {{{ awk print "TST60000 An error has occured!" | "cat 1>&2" }}} On systems that provide /dev/stderr, redirection can be made to this device: {{{ awk print "TST60000 An error has occured!" > /dev/stderr }}}

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This change is a minor edit.

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