# julia > A high-level, high-performance dynamic programming language for technical computing. > More information: . - 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}}`