换Linux系统快半年了，刚开始总是碰到各种各样的问题，虽然斗解决了，由于没有记录，过一段时间就忘了，故在这里记录一下。
选择国内镜像源：
Manjaro有一个很好用的命令rankmirrors。rankmirrors -h可以查看帮助，如下：
Version 4.16.4 USAGE: pacman-mirrors [-h] [-f [NUMBER]] [-i [-d]] [-m METHOD] [--status] [-c COUNTRY [COUNTRY...] | [--geoip] | [--continent]] [-l] [-lc] [-q] [-t SECONDS] [-v] [-n] [--api] [-S/-B BRANCH] [-p PREFIX] [-P PROTO [PROTO...]] [-R] [-U URL] METHODS: -i, --interactive Generate custom mirrorlist -f, --fasttrack [NUMBER] Generate mirrorlist with a number of up-to-date mirrors. Overrides : --geoip, --method -c, --country COUNTRY [COUNTRY ...] Comma separated list of countries, from which mirrors will be used --geoip Get current country using geolocation --continent Use continent from geolocation API: -a, --api [-p PREFIX][-R][-S/-B|-G BRANCH][-P PROTO [PROTO ...]] -S, -B, --set-branch {stable,stable-staging,testing,unstable} API: Replace branch in configuration -p, --prefix PREFIX API: Set prefix to : $mnt | /mnt/install -P, --proto, --protocols {all,http,https,ftp,ftps} [{all,http,https,ftp,ftps} ...] API: Replace protocols in configuration -R, --re-branch API: Replace branch in mirrorlist -U, --url URL API: Replace mirror url in mirrorlist MISC: -G, --get-branch Return branch from configuration -d, --default INTERACTIVE: Load default mirror file -h, --help -l, --list, --country-list List all available countries -lc, --country-config lists configured mirror countries -m, --method {rank,random} Generation method -n, --no-mirrorlist Use to skip generation of mirrorlist -q, --quiet Quiet mode - less verbose output -s, --no-status Ignore mirror branch status -t, --timeout SECONDS Maximum waiting time for server response -v, --version Print the pacman-mirrors version --no-color --interval INTERVAL Max. number of hours since last sync -g Create mirror list from active pool. --status Status for the current mirror list. --use-async Experimental async mirror test.
这里我们着重关注一下-f这个参数，这可参数可以直接生成可用的mirrorlist。了解这个参数后直接用rankmirrors -f即可。