How to check if a process is running via a batch script

Question

Another possibility I came up with, which does not require to save a file, inspired by using grep is:

tasklist /fi "ImageName eq MyApp.exe" /fo csv 2>NUL | find /I "myapp.exe">NUL
if "%ERRORLEVEL%"=="0" echo Program is running

/fi "" defines a filter of apps to find, in our case it’s the *.exe name
/fo csv defines the output format, csv is required because by default the name of the executable may be truncated if it is too long and thus wouldn’t be matched by find later.
find /I means case-insensitive matching and may be omitted

See the man page of the tasklist command for the whole syntax.

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