12-10-2010
Quote:
Originally Posted by
michaelrozar17
So standard output here is "update failed" ..? Am i correct or wot does standard output mean.
By tradition most processes are started with three open files: Standard input at FD 0, standard output at FD 1, and standard error at FD 2. When you run a process in a shell without redirecting anything, stdin reads from the keyboard, stdout writes to the terminal screen, and stderr also writes to the terminal screen.
echo "hello world" prints "hello world" to standard output.
For error messages, we want to print to standard error, so that the error messages will show up even if standard out has been redirected, and so that error messages don't get shoved where they don't belong, like in the middle of a big flat file you're transforming or something.
So we print to stderr, by redirecting FD 1 into FD 2.
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LEARN ABOUT CENTOS
installsieve
INSTALLSIEVE(1) General Commands Manual INSTALLSIEVE(1)
*
NAME
installsieve - user utility for managing sieve scripts
SYNOPSIS
installsieve
DESCRIPTION
installsieve is a utility that allows users to manage their sieve scripts kept on the server.
OPTIONS
-v <name> View script with the given name. The script if retrieved sucessfully is output to standard output.
-l List all of the scripts currently on the server. If one of the scripts is active a arrow is printed indicating that it is the active
script.
-p <port> Port to connect to. If left off this defaults to "sieve" as defined in /etc/services.
-i <file> Install a file onto the server. If a script with the same name already exists on the server it is overwritten. Upon sucessfully
putting the script on the server the script is set active. If <file> has the extension .script it is chopped when put on the server since
sieve names may not contain a '.'.
-a <name> Set <name> as the active script. The list of available names can be obtained from the '-l' option..
-d <name> Delete the sieve script on the server with <name>.
-m <mechanism> Force installsieve to use <mechanism> for authentication. If not specified the strongest authentication mechanism is chosen.
-g <name> Get the sieve script with <name> and save it to disk with a ".script" extension. If a file with that name already exists it is
overwritten.
-u <user> Userid/Authname to use for authentication; by default, the current user.
CMU
Project Cyrus INSTALLSIEVE(1)