Some commonly used file manipulation methods in Ruby summary _ruby topics

Beginners Ruby, many need to learn, now start to try to write a script using Ruby, which uses a lot of file-related operations, here to organize some. Easy to find again later.

Whether a file or directory exists

Copy Code code as follows:

File.exist? (' File_path ')

is a file

Copy Code code as follows:

File.file? ("File_path")

is a directory

Copy Code code as follows:

File.directory? ("File_path")

Get the file name from the path

Copy Code code as follows:

File.basename ('/tmp/adb.log ') #=> "Adb.log"

#从上面结果中移除扩展名

File.basename ('/tmp/adb.log ', '. Log ') #=> "adb"
#或者
File.basename ('/tmp/adb.log ', '. * ') #=> "adb"

List all the subfolders under the directory

Copy Code code as follows:

#替换puts child for their own operation
dir['/tmp/* '].each{|child|puts Child}

Get Parent Directory

Copy Code code as follows:

#特定目录的父路径
File.expand_path ("..", Specific_path)
#当前目录的父路径
File.expand_path ("..", Dir.pwd)
#或者
File.expand_path ("..")