cd /usr/lib/doublecmd/ mkdir /usr/lib/doublecmd/ cd /usr/lib/doublecmd/ chmod +x install.sh sudo bash install.sh
Download from https://sourceforge.net/p/doublecmd/wiki/Download/
tar xf [filename] cd [dirname] copy [dirname] "/usr/lib/doublecmd"
cd /usr/lib/doublecmd/ mkdir /usr/lib/doublecmd/ cd /usr/lib/doublecmd/ chmod +x install.sh sudo bash install.sh
tar xf [filename] cd [dirname] copy [dirname] "/usr/lib/doublecmd"