Command Line Trickery

h2. Redirection
h3. Redirection to file
Redirect STDOUT to file, creating the file if it does not exist, or overwrite when the file already exists.
{{command > output.txt}}

Redirect STDOUT to file, appending data, if the file already exists.
{{command >> output.txt}}

Redirect STDOUT to file, creating the file if it does not exist, or overwrite when the file already exists;
Redirect STDERR to another file, creating the file if it does not exist or overwrite when the file already exists.
{{command > output.txt 2> error.txt}}

Redirect STDOUT to file, creating the file if it does not exist, or overwrite when the file already exists;
Redirect STDERR to another file, appending data, if the file already exists.
{{command > output.txt 2>> error.txt}}

Redirect STDOUT to file, creating the file if it does not exist, or overwrite when the file already exists;
Redirect STDERR to another file, appending data, if the file already exists.
{{command >> output.txt 2>> error.txt}}
h3. Redirection to process
h2. Piping
h3. Named Pipes