mktmpdir(prefix_suffix=nil, *rest) public

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") { ... }


# remove the directory.
FileUtils.remove_entry_secure dir


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May 13, 2012
2 thanks

Undefined Method `mktmpdir' for Dir:Class

Be sure to

require 'tmpdir'

before using it. Read more at http://mikbe.tk/2011/03/07/temporary-directory.