I’m using ‘wget’ to download a few files and then tar them up. I’m
using popen to make calls to wget and tar. Problem is that it tries to
call tar right after the wget call. I need to wait for wget to finish.
Here is what i’ve got so far.
However since you aren’t apparently even using the IO capabilities of
popen, why not simply make use of system? It will automatically wait
for the process to exit
e.g.
system(“wget -r -np -l 0 -w 4 #{url}”)
Of course if the only reason you are using IO.popen is to prevent
output to the console you can do
system(“wget -r -np -l 0 -w 4 #{url} 2>&1 >/dev/null”)
Or even:
IO.popen(“wget -r -np -l 0 -w 4 #{url}”)
here you have a pipe that’s been returned. wget is writing to it. you
simply
need to read all of wget’s output and close the pipe: