how to check the command executed in a for statement is fail

[sambasiva]

Hi Experts,

Please help me with below requirement.

1) I have to execute the below command and assign its output completely to a variable
jps -v |findstr "domain.home"

2)Then I have to verify whether this command is executed successfully or not and take necessary action based on the execution status.


For Example: in shell script I have the code as below for the same requirement

runjps () {
jps -v | grep "domain.home"
}
local result
result=$(runjps) --->execute the command and assign the output to a variable
if [ $? == 0 ] ; then
for jpsItem in $result ; do
printf 'PROCESS-JPS: %s\n' $jpsItem
done
else
print ' jps command failed'
fi


Thanks in advance
SS

[Squashman]

Code: Select all

FOR /F "delims=" %%G in ('jps -v ^| grep "domain.home"') do set result=%%G
IF DEFINED result (
     Execute code here
) else (
echo jps command failed
)

[sambasiva]

basically the output of "jps -v ^| grep "domain.home" might be multiple lines.
In that case at the end of the for statement it contains only the last line right ?


instead can we check the errorlevel at the end of for loop here ?


-SS

[foxidrive]

basically the output of "jps -v ^| grep "domain.home" might be multiple lines.
In that case at the end of the for statement it contains only the last line right ?


instead can we check the errorlevel at the end of for loop here ?

You will get the errorlevel of grep and not jps.

In what way do you expect it to fail?

[sambasiva]

For example jps command will not be success if JAVA_HOME is set in the path.
It fails as the java\bin directory is not found.

In that case I wanted to check the execution status of jps and take action based on that.


Thanks
SS

[foxidrive]

For example jps command will not be success if JAVA_HOME is set in the path.
It fails as the java\bin directory is not found.

In that case I wanted to check the execution status of jps and take action based on that.

This might work for you:

Code: Select all

jps /? >nul 2>&1
if errorlevel 9009 echo jps is not available & goto :EOF

[Squashman]

Well I know BASH scripting and BATCH and I pretty much coded the Batch the way the BASH script would work. So you get what you ask for when you don't explain your problem with enough information up front.