What is the command for Arch Linux to update the packages before installing a new package?
For instance, I know that in Ubuntu, I do:
$ sudo apt-get update
$ sudo apt-get <pkg-name>
What about in Arch?
I came across a couple of version, but they don't seem agree with each others. I can't see the consistency there.
eg 1. (it looks tedious to me):
$ sudo pacman -Syy
$ sudo pacman -Su
$ sudo pacman -Sy
always use "-Sy" with a "u" i.e. "pacman -Syu" then "pacman -S ", and never "pacman -Sy ".
I am just confused!
Any ideas?
The equivalent of apt-get update in Arch Linux is pacman -Syy.
pacman -Syu is equivalent to apt-get update && apt-get upgrade.
Might as well make this complete if it stays...
pacman -S <package> is apt-get install <package>
Note: I agree with @larsks' comment that the best source here is the Arch wiki.
For example, this wiki entry https://wiki.archlinux.org/index.php/Pacman/Rosetta covers the operations for pacman in depth for people who previously used ("coming from"): dnf (Red Hat/Fedora), apt (Debian/Ubuntu), zypper (SLES/openSUSE) or emerge (Gentoo).
From that document, apt update && apt upgrade is equivelent to pacman -Syu.
来源：https://stackoverflow.com/questions/43124985/arch-linux-apt-get-update-equivalent-command