Changes in release 2.1
[2.0.12]
+* The following changes apply on systems conforming to POSIX 1003.1-2001,
+ and are required by the new POSIX standard:
+ - `date -I' is no longer supported. Instead, use `date --iso-8601'.
+ - `nice -NUM' is no longer supported. Instead, use `nice -n NUM'.
* New 'uname' options -i or --hardware-platform, and -o or --operating-system.
'uname -a' now outputs -i and -o information at the end.
New uname option --kernel-version is an alias for -v.