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Full Discussion: Strange behavior returning incorrect count
Top Forums Shell Programming and Scripting Strange behavior returning incorrect count Post 302956632 by st11669 on Thursday 1st of October 2015 01:40:45 PM
Old 10-01-2015
Code:
cat tt11.ksh
#!/bin/ksh
ps -eaf |grep tt11.ksh|grep -v grep
count=`ps -eaf |grep tt11.ksh|grep -v grep`
echo ""
echo "$count"
echo "----"

[itmuser@njctivtemspr01 scripts]$ ./tt11.ksh
itmuser  24550 18489  0 13:20 pts/0    00:00:00 /bin/ksh ./tt11.ksh
 
itmuser  24550 18489  0 13:20 pts/0    00:00:00 /bin/ksh ./tt11.ksh
itmuser  24556 24550  0 13:20 pts/0    00:00:00 /bin/ksh ./tt11.ksh

----

Looks like parent shell is creating new shell to run the command. Is there a way to avoid this? Goal is to have same code to run on AIX and Linux ksh shell.
Last edited by Corona688; 10-01-2015 at 02:49 PM..
 

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LEARN ABOUT MOJAVE

let

let(1)                                                             User Commands                                                            let(1)

NAME

       let - shell built-in function to evaluate one or more arithmetic expressions

SYNOPSIS

   ksh
       let arg...

DESCRIPTION

   ksh
       Each arg is a separate "arithmetic expression" to be evaluated.

EXIT STATUS

       The following exit values are returned:

       0        The value of the last expression is non-zero.

       1        The value of the last expression is zero.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcsu                      |
       +-----------------------------+-----------------------------+

SEE ALSO

       ksh(1), set(1), typeset(1), attributes(5)

SunOS 5.10                                                          15 Apr 1994                                                             let(1)
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