[KARAF-5280] Shell should not display the welcome message again when it is restarted

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.1.1, 4.2.0.M1
• Fix Version/s: 4.1.2, 4.2.0.M1
• Component/s: karaf
• Assignee: Christian Schneider
• Reporter: Christian Schneider
• Created: 31/Jul/17 16:03
• Updated: 15/Sep/18 16:35
• Resolved: 01/Aug/17 08:51

Description

When updating the shell explicitly or during a feature install or uninstall we see this welcome message:
{{ __ __ ____
/ ///___ __________ _/ __/
/ ,< / __ `/ __/ __ `/ /
/ /| |/ // / / / // / __/
// ||_,// _,//

Apache Karaf (4.2.0-SNAPSHOT)

Hit '<tab>' for a list of available commands
and '[cmd] --help' for help on a specific command.
Hit '<ctrl-d>' or type 'system:shutdown' or 'logout' to shutdown Karaf.
}}

To reproduce do:
update org.apache.karaf.shell.core

While the welcome message makes sense when karaf starts it is confusing when installing or uninstalling a feature. So I propose we store that we already displayed the welcome message and then do not display it again.