different behaviour for ksh and ksh -x

Shell Programming and Scripting
1

I'm getting different behaviour when executing below script in debug option.

$ cat ss.ksh
ff=$(pwd)
echo " ff : $ff"
$ ksh ss.ksh
 ff : /tmp
$ ksh -x ss.ksh
+ + pwd
ff=
+ echo  ff : 
 ff :

I was getting this behaviour in my actuall script i'm able to reproduce this in simple script also.

This behaviour is also different for having

#!/bin/ksh

and

#!/bin/ksh -x

in the first line of ss.sh script.

btw, I'm working in Solaris 10.

thz in advance.

2

I cannot reproduce it:

$ cat ss.ksh
ff=$(pwd)
echo " ff : $ff"
$ ksh -x  ss.ksh
+ + pwd
ff=/tmp
+ echo  ff : /tmp
 ff : /tmp
$ ksh   ss.ksh
 ff : /tmp
$ uname -sr
SunOS 5.10
3

Neither do I:

$ uname -a
SunOS s10u9 5.10 Generic_142910-17 i86pc i386 i86pc
$ cat /etc/release
                    Oracle Solaris 10 9/10 s10x_u9wos_14a X86
     Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
                            Assembled 11 August 2010
$ what /bin/ksh
/bin/ksh:
        Version M-11/16/88i
        SunOS 5.10 Generic 141589-04 May 2010
$ cat ss.ksh
ff=$(pwd)
echo " ff : $ff"
$ ksh ./ss.ksh
 ff : /tmp
$ ksh -x ./ss.ksh
+ + pwd
ff=/tmp
+ echo  ff : /tmp
 ff : /tmp
4

The OP could try to trace the execution to check if the additional information could help.

If truss is available:

truss ksh -x ss.ksh
5

i'm sorry for wasting every'1 time. the problem is /tmp was not having enough it was having only 600 bytes free. After increasing /tmp free space everything is working.