Finally realized what I was doing wrong. Su -c requires quotes around the command part.

2022-10-27 17:02:25 -04:00 · 2022-10-27 17:02:25 -04:00 · f0e0cf08f5
commit f0e0cf08f5
parent 78442ebcb7
1 changed files with 1 additions and 2 deletions
--- a/linux-game-manager.sh
+++ b/linux-game-manager.sh
@ -518,8 +518,7 @@ case "${game}" in
            if command -v yay &> /dev/null ; then
                yay -Sy --noconfirm --sudoloop freedoom gzdoom
            elif command -v slapt-get &> /dev/null ; then
-                su -c slapt-get -i gzdoom
-                su -c slapt-get -i freedoom
+                su -c 'slapt-get -i freedoom gzdoom'
            else
                dialog --backtitle "Linux Game Manager" --msgbox "No supported package managers found. Please install the freedoom and gzdoom packages manually." -1 -1
                exit 0