Hi Yan ! On 05-03-2014 09:14 Yan Seiner <y...@seiner.com> wrote: >I am trying to run a script every second.
Beside what Laurent told about using sleep, etc. >first script (the one that does the work) > >trap 'update' HUP >mknod /tmp/dummyfifo p >while true; do > read < /tmp/dummyfifo > /dev/null 2>&1 >done >The problem is that the 'read' generates a >/usr/bin/update: line 1: can't open /tmp/dummyfifo: Interrupted >system call The reason for this is you create your pipe once, but open it again at every iteration of the loop. Try the following: mknod /tmp/dummyfifo p exec 0</tmp/dummyfifo 1>/dev/null 2>&1 while true; do read done This opens the fifo once and assigns it for stdin. After that it stays open until the first script is terminated in any way. In addition stdout *AND* stderr are redirected to /dev/null for all following commands in the script, so you need to redirect to any file or tty when you want do display something. -- Harald _______________________________________________ busybox mailing list busybox@busybox.net http://lists.busybox.net/mailman/listinfo/busybox
