YAY

• Install yay (for manjaro)

sudo pacman -S yay

where pacman is the default package manager, yay is aur helper wrapped around pacman. Here is the link : https://aur.archlinux.org/packages/yay

• Print Help

yay -h

for general help and

yay -[S|Q|R|...]h

where S = Sync, Q = Query, R = Remove

• Remove all old packages from cache

yay -Scc

• Remove unneeded dependencies

yay -c

• Search for a package

yay -Ss __regex__

• Print information about a package

yay -[S|Q]i

where S = remote info, Q = local info

• Install a package

yay -S __package__

• List all explicitly installed packages

yay -Qe

• Remove a package (use with caution, check for cross deps)

yay -Runs __package__

where u = unneeded packages, n = remove config files, s = unneeded dependencies