Unix File Permissions - Does Write Imply Read? -

if file had write permissions only, how user exercise right edit file if not read it?

does 'write' imply 'read' in unix?

a file can lot of things in unix-like systems. might, example pipeline, user might submit data to, not receive data from. no, write permission not imply read.

another example might directory user can deposit data (potentially destroying existing data), not read others have deposited.