Signal Switch - Signal Desktop switcher that makes it easy to flip between two different Signal accounts installed on the same macOS user account

signal-switch.sh

#!/bin/bash -x

#
# Switch out one Signal Desktop installation for another.
#

APPSUPPORT_DISABLED="$HOME/tmp/Library-DISABLED/Application Support"

mkdir -p "$APPSUPPORT_DISABLED"

signal_running="$(ps -ef | grep -v grep | grep Signal.app/Contents/MacOS/Signal | wc -l | tr -d ' ')"
if [ 0 -lt $signal_running ]; then
    osascript -e 'tell application "Signal" to quit'
    sleep 3
fi

mv "$HOME/Library/Application Support/Signal" "$APPSUPPORT_DISABLED/Signal-tmp"
[ -d "$APPSUPPORT_DISABLED/Signal" ] && mv "$APPSUPPORT_DISABLED/Signal" "$HOME/Library/Application Support/Signal"
mv "$APPSUPPORT_DISABLED/Signal-tmp" "$APPSUPPORT_DISABLED/Signal"