如何在ruby中将变量传递给系统命令？

Question

In my ruby script I need to pass a file path to system command. For example, its like

system("run.exe -l C:\\") where run.exe is my command and -l determines the local path.

Now if someone copies this to other machine drive C can be changed to drive E.

So my doubt is how to make it as a variable or how to take the current folder path in this.

Any suggestions are most welcome.

Answer 1

mu is too short and Jan give answers, but in general, you can put ruby commands in #{...} within "..." . In this case, you can do:

system("fixed_string_1#{ruby_command_1}fixed_string_2#{ruby_command_2}fixed_string_3...")

Answer 2

你想看看ARGF和ARGV