Linux Standard Base Core Specification, Generic Part | ||
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at is as specified in POSIX 1003.1-2008 (ISO/IEC 9945-2009) but with differences as listed below.
-d | is functionally equivalent to the -r option specified in POSIX 1003.1-2008 (ISO/IEC 9945-2009). | |
-r | need not be supported, but the '-d' option is equivalent. | |
-t time | need not be supported. |