Returns true
if stat is a symbolic link, false
if it isn’t or if the operating system doesn’t support this feature. As File::stat
automatically follows symbolic links, symlink?
will always be false
for an object returned by File::stat
.
File.symlink("testfile", "alink") #=> 0 File.stat("alink").symlink? #=> false File.lstat("alink").symlink? #=> true
Returns true
if stat has its sticky bit set, false
if it doesn’t or if the operating system doesn’t support this feature.
File.stat("testfile").sticky? #=> false
Returns whether the buffer data is accessible.
A buffer becomes invalid if it is a slice of another buffer which has been freed.
Create a DRbUnknownError
exception containing this object.
Is this server alive?
Sends a TRACE request to the path
and gets a response, as an HTTPResponse
object.
Look up the typeclass
DNS
resource of name
.
name
must be a Resolv::DNS::Name
or a String
.
typeclass
should be one of the following:
Resolv::DNS::Resource::IN::ANY
Resolv::DNS::Resource::IN::CNAME
Resolv::DNS::Resource::IN::HINFO
Resolv::DNS::Resource::IN::MINFO
Resolv::DNS::Resource::IN::MX
Resolv::DNS::Resource::IN::NS
Resolv::DNS::Resource::IN::PTR
Resolv::DNS::Resource::IN::SOA
Resolv::DNS::Resource::IN::TXT
Returned resource is represented as a Resolv::DNS::Resource
instance, i.e. Resolv::DNS::Resource::IN::A
.