What are the Ruby File open modes and options

Question

Ruby s File open takes modes and options as arguments  Where do I find a complete list of modes and options

User · Answer

opt is new for ruby 1 9  The various options are documented in IO new   www ruby-doc org core IO html

User · Answer

In Ruby IO module documentation  I suppose   Mode    Meaning ----- --------------------------------------------------------  r      Read-only  starts at beginning of file   default mode   ----- --------------------------------------------------------  r      Read-write  starts at beginning of file  ----- --------------------------------------------------------  w      Write-only  truncates existing file         to zero length or creates a new file for writing  ----- --------------------------------------------------------  w      Read-write  truncates existing file to zero length         or creates a new file for reading and writing  ----- --------------------------------------------------------  a      Write-only  starts at end of file if file exists          otherwise creates a new file for writing  ----- --------------------------------------------------------  a      Read-write  starts at end of file if file exists          otherwise creates a new file for reading and         writing  ----- --------------------------------------------------------  b      Binary file mode  may appear with         any of the key letters listed above           Suppresses EOL  lt - gt  CRLF conversion on Windows  And         sets external encoding to ASCII-8BIT unless explicitly         specified  ----- --------------------------------------------------------  t      Text file mode  may appear with         any of the key letters listed above except  b

[ruby] What are the Ruby File.open modes and options?

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