mktmpdir

Dir.mktmpdir creates a temporary directory.

The directory is created with 0700 permission.

The prefix and suffix of the name of the directory is specified by the optional first argument, prefix_suffix.

• If it is not specified or nil, "d" is used as the prefix and no suffix is used.
• If it is a string, it is used as the prefix and no suffix is used.
• If it is an array, first element is used as the prefix and second element is used as a suffix.

 Dir.mktmpdir {|dir| dir is ".../d..." }
 Dir.mktmpdir("foo") {|dir| dir is ".../foo..." }
 Dir.mktmpdir(["foo", "bar"]) {|dir| dir is ".../foo...bar" }

The directory is created under Dir.tmpdir or the optional second argument tmpdir if non-nil value is given.

 Dir.mktmpdir {|dir| dir is "#{Dir.tmpdir}/d..." }
 Dir.mktmpdir(nil, "/var/tmp") {|dir| dir is "/var/tmp/d..." }

If a block is given, it is yielded with the path of the directory. The directory and its contents are removed using FileUtils.remove_entry_secure before Dir.mktmpdir returns. The value of the block is returned.

 Dir.mktmpdir {|dir|
   # use the directory...
   open("#{dir}/foo", "w") { ... }
 }

If a block is not given, The path of the directory is returned. In this case, Dir.mktmpdir doesn’t remove the directory.

 dir = Dir.mktmpdir
 begin
   # use the directory...
   open("#{dir}/foo", "w") { ... }
 ensure
   # remove the directory.
   FileUtils.remove_entry_secure dir
 end