I've written a fuzzy test that fails unreliably. I've added some debug code, but now I want to run the test until it fails so I can gather the debug output.
I've setup the test so I can run it using:
./runtest
My current solution is to write an untilfail
script:
#!/bin/bash
$@
while [ $? -eq 0 ]; do
$@
done
Then use it:
untilfail ./runtest
Is there a simpler solution?
while
takes a command to execute, so you can use the simpler
while ./runtest; do :; done
This will stop the loop when ./runtest
returns a nonzero exit code (which is usually indicative of failure).
To further simplify your current solution though, you should just change your untilfail script to look like this:
#!/bin/bash
while $@; do :; done
And then you can call it with whatever command you're already using:
untilfail ./runTest --and val1,val2 -o option1
If you don't want to wrap a complex pipe line into a shell script or function then this works:
while true; do
curl -s "https:..." | grep "HasErrors.:true"
if [[ "$?" -ne 0 ]]; then
break
fi
sleep 120
done
The HTTP request in this case always returns 200 but also returns some JSON which has an attribute "HasErrors":true when there is an error.
来源:https://stackoverflow.com/questions/12967232/repeatedly-run-a-shell-command-until-it-fails