Include GNUScreen info at the PS1

[dr-costas]

Hi,

How can one include GNUScreen info at the PS1? Specifically, I would like to know:

• If I'm not in a GNUScreen, then if there are active GNUSCreen sessions, how many are those
• If I'm in a GNUScreen session, which GNUScreen session am I in?

I have figured out how to do this in my own, not bash-it, PS1, but I want to transfer that to bash-it. Any help?

[cornfeedhobo]

If you don't mind sharing the snippet you have working, we can think about a place to put it.

[dr-costas]

I don't mind at all! I doubt that is good enough to put it somewhere, but I guess you can use it to get an idea.

This is what I use:

# Function: existsScreenSession
function existsScreenSession {
	screenLs=`screen -ls | head -n 1 | tr -d '[:space:]'`
	if [[ "$screenLs" == *: ]]
	then
		existsScreenFlag=0
	else
		existsScreenFlag=1
	fi

	return $existsScreenFlag
}
#
# Function insideScreenSession
function insideScreenSession {
	if [ -z "$STY" ]
	then
		insideScreen=1
	else
		insideScreen=0
	fi

	return $insideScreen
}
#
# Function: getGNUScreenInfo
function getGNUScreenInfo {
	gnuScreenInfo=""
	if existsScreenSession
	then
		if insideScreenSession
		then
			gnuScreenInfo="Inside GNUScreen session: $STY"
		else
			nbSessions=$(( $(screen -ls | wc -l | tr -d ' ') - 2 ))
			if [ $nbSessions -gt 0 ]
			then
				gnuScreenInfo="$nbSessions GNUScreen session(s) active"
			fi
		fi
	fi

	echo $gnuScreenInfo
}

and I call it as:

gnInfo='$( getGNUScreenInfo )'

Then I add the gnInfo at my PS1.