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Reads or writes the System V shared memory segment ID starting at position POS for size SIZE by attaching to it, copying in/out, and detaching from it. When reading, VAR must be a variable which will hold the data read. When writing, if STRING is too long, only SIZE bytes are used; if STRING is too short, nulls are written to fill out SIZE bytes. Return TRUE if successful, or FALSE if there is an error.

Source: Perl builtin functions
Copyright: Larry Wall, et al.
Next: shmwrite ID,STRING,POS,SIZE

Previous: shmget KEY,SIZE,FLAGS

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