Description of problem:

In consistency on how ksh performs the following.

#1
IsRunning=`ps -ef |grep /home/elcaro/scripts/cron/spool_purge_co_appl_log | grep -v grep| grep -v eflex | wc -l`

#2
IsRunning=$(ps -ef |grep /home/elcaro/scripts/cron/spool_purge_co_appl_log | grep -v grep| grep -v eflex | wc -l)

ps -ef |grep /home/elcaro/scripts/cron/spool_purge_co_appl_log | grep -v grep| grep -v eflex | wc -l | read IsRunning

The #1 backtic way seems like obsoleted way of doing it. The #2 way should work.  And the #3 way works.

Version-Release number of selected component (if applicable):

RHEL5.1/ksh-20060214-1.4:       1/1  (works)
RHEL5.2/ksh-20060214-1.7:       1/1  (works)
RHEL5.3/ksh-20080202-2.el5:     1/1  (works)
RHEL5.4/ksh-20080202-14.el5:    1/1  (works)

RHEL5.5/ksh-20100202-1.el5:     1/2  (doesn't work)
RHEL5.6/ksh-20100202-1.el5_6.3: 1/2  (doesn't work)
RHEL6.0/ksh-20100621-6.el6:     1/2  (doesn't work)


How reproducible:


Steps to Reproduce:
1. Write a simple script similar to above using say top instead
2.
3.
  
Actual results:


Expected results:


Additional info: