Strange KSH behaviour - any comments?


 
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# 8  
Old 06-24-2008
Quote:
Originally Posted by bakunin
Exactly this - once the script is run in the currect shell, once in a daughter shell - is reason for the different results.
Code:
# cat x.ksh
#! /bin/ksh
print - "$? parameters have been passed"
exit 0

I tested the problem originator's code on Solaris 10 and got the same results as the originator using both /usr/bin/ksh and /xpg4/usr/bin/ksh

Next I tested your code on ksh93 (version t- 6/14/2008 on Interix.i386 V6) and noticed the following:

- Your sample code uses $? to "print the number of parameters passed" . My understanding of the ksh programming language and shell is that $? returns the decimal value returned by the last executed command. and $# returns the number of positional parameters.
- Your sample code (x.ksh) contains an "exit 0". When executed within the current shell context this will close the shell i.e. exit the shell.

Here are my results for ksh93:
Code:
$ cat x.ksh
#!/usr/bin/ksh93
print - "$# parameters have been passed"
$ . ./x.ksh 1 2
2 parameters have been passed
$ . ./x.ksh
0 parameters have been passed
$

The problem appears to be specific to Solaris.
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