Learning Linux Shell Scripting - Second Edition

File test options for the test command

The following are the various options for file-handling operations using the test command:

-c file_name	Check whether file is character special file
-d file_name	Check whether directory exists
-e file_name	Check whether file exists
-f file_name	Check whether file is a regular file and not a directory
-G file_name	Check whether file exists and is owned by the effective group ID
-g file_name	Check whether file has Set-group-ID set
-k file_name	Check whether file has Sticky bit set
-L file_name	Check whether file is symbolic link
-p file_name	Check whether file is a named pipe
-O file_name	Check whether file exists and is owned by the effective ...