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I am writing a small script to serially walk through a directory and run a command on the subdirectories therein.
I am running into a problem however with Popen() that it will walk through the directories and run the desired command without waiting for the previous one to finish. i.e.
for dir in dirs: #run command on the directory here.
it kicks off the command for each dir without caring about it afterwards. I want it to wait for the current one to finish, then kick off the next. The tool I am using on the directories is
Log2timeline from SANS SIFT which takes quite a while and produces quite a bit of output. I don’t care about the output, I just want the program to wait before kicking off the next.
What’s the best way to accomplish this?
process = subprocess.Popen(["your_cmd"]...) process.wait()
If you are using python >= 2.7 and you don’t care about the output just use
You can also use call but that will not raise any error if you have a non-zero return code which may or may not be desirable
subprocess.check_output( ... )
will block … and can be used instead of Popen
however if you are set on Popen
will also block until the process returns