美国的GSM是1900MHz. 如果你确实要去美国,请带一部三频(或四频)手机. 双频:900/1800MHz 三频:900/1800/1900MHz 四频:850/900/18001900MHz 另外美国的手机多数是不插卡的CDMA手机,办理时一定要办理GSM 1900的卡. （采用CDMA技术路线的是Sprint和Verizon，而采用GSM路线的是Cingular、AT&T、VoiceStream和Nextel。）http://gengwg.blogspot.com/
https://killer.sh Pre Setup Once you've gained access to your terminal it might be wise to spend ~1 minute to setup your environment. You could set these: alias k = kubectl # will already be pre-configured export do = "--dry-run=client -o yaml" # k get pod x $do export now = "--force --grace-period 0" # k delete pod x $now Vim To make vim use 2 spaces for a tab edit ~/.vimrc to contain: set tabstop=2 set expandtab set shiftwidth=2 More setup suggestions are in the tips section . Question 1 | Contexts Task weight: 1% You have access to multiple clusters from your main terminal through kubectl contexts. Write all those context names into /opt/course/1/contexts . Next write a command to display the current context into /opt/course/1/context_default_kubectl.sh , the command should use kubectl . Finally write a second command doing the same thing into ...
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