Created
August 30, 2012 20:44
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Command substitution hangs if the command starts a process in the background.
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| foo=$(./foo.sh) | |
| echo "foo is '$foo'" |
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| yes > /dev/null & | |
| disown %- | |
| echo "yes started" |
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Only works if we redirect
yesto/dev/null. This is obvious in the case ofyessince it spews a bunch of output, but not so obvious for commands that may not output anything.