OSX中的bash重定向不起作用

Question

I try to redirect output from a command in a terminal window in Max OSX (10.9.4) and get an error message. When I try this easy command:

ls > file_list.txt

I get this error:

-bash: file_list.txt: Operation not supported

Anybody an idea?

Thanks

Answer 1

This is the error you get if you try to create a file somewhere like /dev , which is the mount point for a special filesystem that doesn't (ordinarily) allow you to create files:

$ cd /dev
$ ls > file_list.txt
bash: file_list.txt: Permission denied
# Oops, we get permission denied before we even try to create the file.
$ sudo -s
Password:
# ls > file_list.txt
bash: file_list.txt: Operation not supported