module File::Constants
File::Constants provides file-related constants. All possible file constants are listed in the documentation but they may not all be present on your platform.
If the underlying platform doesn't define a constant the corresponding Ruby constant is not defined.
Your platform documentations (e.g. man open(2)) may describe more detailed information.
Constants
- APPEND
append on each write
- BINARY
disable line code conversion
- CREAT
create file if it does not exist
- DIRECT
Try to minimize cache effects of the I/O to and from this file.
- DSYNC
any write operation perform synchronously except some meta data
- EXCL
error if CREAT and the file exists
- FNM_CASEFOLD
Makes File.fnmatch patterns case insensitive (but not Dir.glob patterns).
- FNM_DOTMATCH
The '*' wildcard matches filenames starting with “.” in File.fnmatch and Dir.glob patterns
- FNM_EXTGLOB
Allows file globbing through “{a,b}” in File.fnmatch patterns.
- FNM_NOESCAPE
Disables escapes in File.fnmatch and Dir.glob patterns
- FNM_PATHNAME
Wildcards in File.fnmatch and Dir.glob patterns do not match directory separators
- FNM_SYSCASE
System default case insensitiveness, equals to FNM_CASEFOLD or 0.
- LOCK_EX
exclusive lock. see File#flock
- LOCK_NB
non-blocking lock. used with LOCK_SH or LOCK_EX. see File#flock
- LOCK_SH
shared lock. see File#flock
- LOCK_UN
unlock. see File#flock
- NOATIME
do not change atime
- NOCTTY
not to make opened IO the controlling terminal device
- NOFOLLOW
do not follow symlinks
- NONBLOCK
do not block on open or for data to become available
- NULL
Name of the null device
- RDONLY
open for reading only
- RDWR
open for reading and writing
- RSYNC
any read operation perform synchronously. used with SYNC or DSYNC.
- SYNC
any write operation perform synchronously
- TRUNC
truncate size to 0
- WRONLY
open for writing only