Move pages under tldr, lint run.sh, update docs

tldr/julia

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# julia
+
+> A high-level, high-performance dynamic programming language for technical computing.
+> More information: <https://docs.julialang.org/en/v1/manual/getting-started/>.
+
+- Start a REPL (interactive shell):
+
+`julia`
+
+- Execute a Julia program and exit:
+
+`julia {{program.jl}}`
+
+- Execute a Julia program that takes arguments:
+
+`julia {{program.jl}} {{arguments}}`
+
+- Evaluate a string containing Julia code:
+
+`julia -e '{{julia_code}}'`
+
+- Evaluate a string of Julia code, passing arguments to it:
+
+`julia -e '{{for x in ARGS; println(x); end}}' {{arguments}}`
+
+- Evaluate an expression and print the result:
+
+`julia -E '{{(1 - cos(pi/4))/2}}'`
+
+- Start Julia in parallel mode, using N worker processes:
+
+`julia -p {{N}}`