10-30-2013
I remember the times when you were taught shell basics, and so was pure sh for compatibility, it is also true for ksh... things may change when it comes to advanced features and extensions where it may differ depending of implementation ( and so KSH93 or KSH88 with posix extension...) ... In other words if your shellscript is pure standard ksh it has no reason to not be compatible between UNIX variants or LINUX so sticking to old syntax will almost always work, recent fany extension may give surprises...
addendum
I stick to old ksh to be sure I have no problem when copying my scripts from HP-UX to Solaris or AIX thought its more AIX to solaris and linux now... (AIX has ksh93 ( the server I squat I upgraded to 7.1 so not sure about the other releases...) HP-UX 11.11 is not KSH93 nor is Solaris 10 ksh)
Last edited by vbe; 10-30-2013 at 12:55 PM..
Reason: addendum
This User Gave Thanks to vbe For This Post:
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LEARN ABOUT OPENDARWIN
times
times(1) User Commands times(1)
NAME
times - shell built-in function to report time usages of the current shell
SYNOPSIS
sh
times
ksh
times
DESCRIPTION
sh
Print the accumulated user and system times for processes run from the shell.
ksh
Print the accumulated user and system times for the shell and for processes run from the shell.
On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways:
1. Variable assignment lists preceding the command remain in effect when the command completes.
2. I/O redirections are processed after variable assignments.
3. Errors cause a script that contains them to abort.
4. Words, following a command preceded by ** that are in the format of a variable assignment, are expanded with the same rules as a vari-
able assignment. This means that tilde substitution is performed after the = sign and word splitting and file name generation are not
performed.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO
ksh(1), sh(1), time(1), attributes(5)
SunOS 5.10 15 Apr 1994 times(1)