- Inheritance
FileTest implements file test operations similar to those used in File::Stat. It exists as a standalone module, and its methods are also insinuated into the File class. (Note that this is not done by inclusion: the interpreter cheats).
Methods
Instance
| Visibility | Signature |
|---|---|
| public | blockdev? (p1) |
| public | chardev? (p1) |
| public | directory? (p1) |
| public | executable? (p1) |
| public | executable_real? (p1) |
| public | exist? (p1) |
| public | exists? (p1) |
| public | file? (p1) |
| public | grpowned? (p1) |
| public | identical? (p1, p2) |
| public | owned? (p1) |
| public | pipe? (p1) |
| public | readable? (p1) |
| public | readable_real? (p1) |
| public | setgid? (p1) |
| public | setuid? (p1) |
| public | size (p1) |
| public | size? (p1) |
| public | socket? (p1) |
| public | sticky? (p1) |
| public | symlink? (p1) |
| public | writable? (p1) |
| public | writable_real? (p1) |
| public | zero? (p1) |
Instance Method Detail
File.blockdev?(file_name) => true or false
Returns true if the named file is a block device.
File.chardev?(file_name) => true or false
Returns true if the named file is a character device.
File.directory?(file_name) => true or false
Returns true if the named file is a directory, false otherwise.
File.directory?(".")
File.executable?(file_name) => true or false
Returns true if the named file is executable by the effective user id of this process.
File.executable_real?(file_name) => true or false
Returns true if the named file is executable by the real user id of this process.
File.exist?(file_name) => true or false
File.exists?(file_name) => true or false (obsolete)
Return true if the named file exists.
File.exist?(file_name) => true or false
File.exists?(file_name) => true or false (obsolete)
Return true if the named file exists.
File.file?(file_name) => true or false
Returns true if the named file exists and is a regular file.
File.grpowned?(file_name) => true or false
Returns true if the named file exists and the effective group id of the calling process is the owner of the file. Returns false on Windows.
File.identical?(file_1, file_2) => true or false
Returns true if the named files are identical.
open("a", "w") {}
p File.identical?("a", "a") #=> true
p File.identical?("a", "./a") #=> true
File.link("a", "b")
p File.identical?("a", "b") #=> true
File.symlink("a", "c")
p File.identical?("a", "c") #=> true
open("d", "w") {}
p File.identical?("a", "d") #=> false
File.owned?(file_name) => true or false
Returns true if the named file exists and the effective used id of the calling process is the owner of the file.
File.pipe?(file_name) => true or false
Returns true if the named file is a pipe.
File.readable?(file_name) => true or false
Returns true if the named file is readable by the effective user id of this process.
File.readable_real?(file_name) => true or false
Returns true if the named file is readable by the real user id of this process.
File.setgid?(file_name) => true or false
Returns true if the named file has the setgid bit set.
File.setuid?(file_name) => true or false
Returns true if the named file has the setuid bit set.
File.size(file_name) => integer
Returns the size of file_name.
File.size?(file_name) => Integer or nil
File.socket?(file_name) => true or false
Returns true if the named file is a socket.
File.sticky?(file_name) => true or false
Returns true if the named file has the sticky bit set.
File.symlink?(file_name) => true or false
Returns true if the named file is a symbolic link.
File.writable?(file_name) => true or false
Returns true if the named file is writable by the effective user id of this process.
File.writable_real?(file_name) => true or false
Returns true if the named file is writable by the real user id of this process.
File.zero?(file_name) => true or false
Returns true if the named file exists and has a zero size.