Creating a unique name for .jtl file in command line

Question

I am running some jmeter tests through command line, and in that command I have the statement:

-l testresults.jtl

which of course outputs the jmeter results into a file that is called "testresults". My question is:

Is there a way in command line to give a unique name to the test results file?

I would like to append the name of the test, along with a time stamp in order to keep it unique.

Answer 1

On a Windows based system,

Open notepad and write the below piece of code in it.

C:\ set SAVESTAMP=%DATE:/=-%@%TIME::=-%
C:\ set SAVESTAMP=%SAVESTAMP: =%
C:\ set SAVESTAMP=%SAVESTAMP:,=.%.jtl

jmeter -n -t "Your .jmx file path" -l %SAVESTAMP%

Now save this as a batch cript - filename.bat

Go to the location where you saved your file and run it by double-click or select and enter.

This should do the trick for you.

On Linux based system you might want to run it with a similar shell script.

Answer 2

JMeter-only solution:

1. Add a Listener of your choice to the test plan and configure to store it whatever you want in a file.
2. Use __time() function as a part of file name to make current timestamp a part of it

Non-JMeter solution

Your question itself is not very related to JMeter, you can pass whatever you want via -l parameter and JMeter tries to store test results in that location, so few ideas on getting timestamps:

• Windows Powershell: Get-Date -UFormat "%s"
• Linux/Unix/MacOSX (bash shell): date +%s
• Apache Ant: tstamp task
• Apache Maven: JMeter Maven Plugin automatically appends timestamp to results files

Demo:

For more information on different ways of launching JMeter tests without using GUI check out Five Ways To Launch a JMeter Test without Using the JMeter GUI article

Answer 3

Use the below, predefined, property of JMETER to parameterize the file name.

${START.HMS}testresults.jtl

It gives a unique result file name.