28-Node.js study notes -node.js several commonly used commands

node.js several commonly used commands

`` `Npm -v # show version, check npm installed correctly. npm install express # install express module install express # npm -g global express installation module npm list # list the installed modules npm show express # display module details npm update # upgrade project in the current directory of all the modules npm update express # upgrade the current projects under the directory specified module npm update -g express # upgrade the overall installation of express module npm uninstall express # delete the specified module `` `

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