shell test file

Outline

Operators	Explanation	For example
-e file	Detect file (including directory) exists, and if so, it returns true.	[-E $ file] returns true.
-s file	Detecting whether the file is empty (the file size is greater than 0), is not empty return true.	[-S $ file] returns true.
-d file	Detecting whether the file is a directory, and if so, it returns true.	[-D $ file] returns false.
-f file	Detecting whether the file is a regular file (neither catalog nor the device file), and if so, it returns true.	[-F $ file] returns true.
-b file	Detecting whether the file is a device file block, if so, it returns true.	[-B $ file] returns false.
-c file	Detecting whether the file is a character file, and if so, it returns true.	[-C $ file] returns false.
-p file	Detecting whether the file is a named pipe, and if so, it returns true.	[-P $ file] returns false.
-r file	Detecting whether the file is readable, and if so, it returns true.	[-R $ file] returns true.
-w file	Detecting whether the file can be written, and if so, it returns true.	[-W $ file] returns true.
-x file	Detecting whether the file is executable, and if so, it returns true.	[-X $ file] returns true.
-g file	Detecting whether the file has the SGID bit, and if so, it returns true.	[-G $ file] returns false.
-u file	Detecting whether the file has the SUID bit, and if so, it returns true.	[-U $ file] returns false.
-k file	Detecting whether a file has the sticky bit (Sticky Bit), and if so, it returns true.	[-K $ file] returns false.

 

 

 

 

 

 

 

 

 

 

 

 

 

note:

• File size has been not empty