CODEWITHSUNDEEP
pythonshelljenkins
Abhishek
Abhishek

Reputation: 39

Jenkins Execute shell behaving differently

I am creating a Jenkins project which executes a shell on build. Inside the execute shell I am running a python script like `python3 pythonScriptFile.py "${arg1}" "${arg2}" "${arg3}"

the python file internal call a shell script.

python -> shell1 -> shell2 -> return back to python file to continue execution.

when i execute the python file with arguments in terminal the the execution is synchronous one after the other.

but when I run the same in Jenkins first the shell is executed then the python file.

`print("SCRIPT Started")
 process = os.system("""sh script.sh -t {arg1} -e {arg2}""")
 process.wait()
 if process.returncode != 0:
     sys.exit()
     print("Error executing build script")

 print("SCRIPT COMPLETED")`

Output:

Script executed (which is a echo inside shell)
SCRIPT Started
SCRIPT COMPLETED`

Expected Output:

SCRIPT Started
Script executed (which is a echo inside shell)
SCRIPT COMPLETED`

Upvotes: 1

Views: 384

Answers (1)

KamilCuk
KamilCuk

Reputation: 141030

[ Why does that happen ? ]

The buffering of a standard output stream depends on the environment and program settings.

In Jenking the output stream of python program is fully buffered, while interactive program connected to a terminal is line buffered.

[ How to fix it ? ]

Disable output buffering

Upvotes: 5

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