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Shell script error

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# 1  
Old 05-09-2015
Shell script error
I have wrriten a shell script and getting a below error.


Code:
ps -ef | grep "Exp" | mailx -s " Instance Currently Running Before Stop" abi@pepsi.com
mailx -s "webshell instance will be stopped now" abi@pepsi.com < /dev/null
PATH=/usr/local/bin/
cd $PATH
sudo /oes/oracle stop

cd
 
date
ps -ef | grep "Exp" | mailx -s "Instance Currently Running After Stop" abi@pepsi.com
 
cd $PATH
sudo /oes/6.3.4/olap/bin/express start
 
cd
 
mailx -s "instance has been started now" abi@pepsi.com< /dev/null
ps -ef | grep "Exp" | mailx -s "Instance Currently Running After Start" abi@pepsi.com

error :

Code:
/home/pepsi.sh[35]: mailx:  not found
+ grep Exp
/home/pepsi.sh[37]: grep:  not found
+ mailx -s OSA Instance Currently Running After Start abi@gmail.com
+ ps -ef
/home/efsoesvr/osa.sh[37]: ps:  not found
/home/efsoesvr/osa.sh[37]: mailx:  not found


I am not sure what is wrong. can u help me out
# 2  
Old 05-09-2015
When this script is running $PATH does not include the directory (or directories) where the utilities grep, mailx, and ps are located on your system.
# 3  
Old 05-09-2015
can you plz let me know how to find those utilities location of grep,mailx,ps ?
# 4  
Old 05-09-2015
Depending on what your system is, use whereis grep or type grep or locate grep or other equivalent commands.

In your above code snippet, your hopping to and fro between directories. While this is not an error, it is unnecessary as you are using absolute paths for your commands, and output files should definitely NOT go to e.g. /usr/local/bin/. Maybe your entire PATH redefinition is unnecessary?
Last edited by RudiC; 05-10-2015 at 02:53 AM.. Reason: typo
# 5  
Old 05-09-2015
this reside in PATH variable. I can able to start/stop only on that path variable.

Code:
 
sudo /oes/oracle stop => PATH=/usr/local/bin/

do I need to include the grep, ps location in my script.
Last edited by Don Cragun; 05-09-2015 at 08:17 AM.. Reason: Fix closing CODE tag.
# 6  
Old 05-09-2015
The PATH variable should NEVER be used to pass a pathname to a script nor be used within a script as a general variable holding a pathname.

The PATH variable has a very special meaning to any shell based on Bourne shell syntax (including all shells that conform to the IEEE and ISO POSIX standards and The Open Group's Single UNIX Specifications); it is a colon separated list of directories containing the utilities to be executed by that shell that are invoked with no slash characters in their pathname.

If you are saying that you want the normal setting of $PATH to find grep, ps, and mailx and need to add /usr/local/bin to find sudo;
either:
  • set PATH using PATH="/usr/local/bin:$PATH", or
  • leave PATH alone and change the invocation of sudo to /usr/local/bin/sudo /oes/oracle stop.
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