Pipes (|) are one of the most powerful features in bash and allow you to efficiently chain commands together and send data through it. We'll also look at how output redirection works using the stdout redirect operator (>). This allows us to take the output of a command and send it to a file. You can also append to a file using >>.
Read this article for more @R_477_4045@ion on bash redirection.
Check the size of one js file with uglify, gzip.
$ uglifyjs -c -m -- index.js | gzip -9 | wc -c
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