04-17-2013
I second a plus vote for the no-break concept of the Solaris approach. It is what VMS (OpenVMS) was also famous for. You could copy a binary from VMS 2.1 to VMS 6.0 and it ran correctly. Ditto an old SPARCn binary on a SPARCn+m architecture.
Solaris system startup scripts from a long time ago still work as designed. SMF and some other changes have obviated the existence of a lot of them.
Solaris 11 has a slightly different feel, especially with regard to where shells and standard commands reside. Early on stuff like GNU coreutils was likely to be in /usr/local bin. Then the GNU coreutils official next move was to /usr/sfw/bin, now their most recent home is /usr/gnu/bin.
No big deal unless run a lot of different Solaris OSes. So when you are root and then you su, you have to be careful to get the right awk: nawk, awk, or gawk depending on app owners individual profiles. And Solaris version. Wrong awk may give you some surprises.. tr also does that.
The one command that causes the most turmoil on the forums is date. For one: Solaris /usr/bin/date does not support the %s epoch seconds format specifier. People post GNU date math answers not knowing the issues standard Solaris date causes for uninformed forum readers. nawk vs awk is another problem for readers.
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LEARN ABOUT XFREE86
ucblinks
ucblinks(1B) SunOS/BSD Compatibility Package Commands ucblinks(1B)
NAME
ucblinks - adds /dev entries to give SunOS 4.x compatible names to SunOS 5.x devices
SYNOPSIS
/usr/ucb/ucblinks [-e rulebase] [-r rootdir]
DESCRIPTION
ucblinks creates symbolic links under the /dev directory for devices whose SunOS 5.x names differ from their SunOS 4.x names. Where possi-
ble, these symbolic links point to the device's SunOS 5.x name rather than to the actual /devices entry.
ucblinks does not remove unneeded compatibility links; these must be removed by hand.
ucblinks should be called each time the system is reconfiguration-booted, after any new SunOS 5.x links that are needed have been created,
since the reconfiguration may have resulted in more compatibility names being needed.
In releases prior to SunOS 5.4, ucblinks used a nawk rule-base to construct the SunOS 4.x compatible names. ucblinks no longer uses nawk
for the default operation, although nawk rule-bases can still be specifed with the -e option. The nawk rule-base equivalent to the SunOS
5.4 default operation can be found in /usr/ucblib/ucblinks.awk.
OPTIONS
-e rulebase Specify rulebase as the file containing nawk(1) pattern-action statements.
-r rootdir Specify rootdir as the directory under which dev and devices will be found, rather than the standard root directory /.
FILES
/usr/ucblib/ucblinks.awk sample rule-base for compatibility links
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWscpu |
+-----------------------------+-----------------------------+
SEE ALSO
devlinks(1M), disks(1M), ports(1M), tapes(1M), attributes(5)
SunOS 5.10 13 Apr 1994 ucblinks(1B)