Commands tagged halt (4)
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Referring to the original post, if you are using $! then that means the process is a child of the current shell, so you can just use `wait $!`. If you are trying to wait for a process created outside of the current shell, then the loop on `kill -0 $PID` is good; although, you can't get the exit status of the process.
3wait $! -
If you really _must_ use a loop, this is better than parsing the output of 'ps': PID=$! ;while kill -0 $PID &>/dev/null; do sleep 1; done kill -0 $PID returns 0 if the process still exists; otherwise 1
0wait -
Allows system to be halted and session closed by KDE. Very useful to save applications states, especially with the KDE apps that behave correctly.
0qdbus org.kde.ksmserver /KSMServer logout 0 2 2 -
The '[r]' is to avoid grep from grepping itself. (interchange 'r' by the appropriate letter) Here is an example that I use a lot (as root or halt will not work):
while (ps -ef | grep [w]get); do sleep 10; done; sleep 60; haltI add the 'sleep 60' command just in case something went wrong; so that I have time to cancel. Very useful if you are going to bed while downloading something and do not want your computer running all night.-2while (ps -ef | grep [r]unning_program_name); do sleep 10; done; command_to_execute
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