gistfile1.txt

root@project:~# cat /service/hal/run 
#!/bin/bash

echo "$(date): waiting for dependency1 to be up"
s6-svwait -u /service/dependency1

echo "$(date): starting hal"
exec 2>&1 /opt/ninox/hal
root@project:~# ps aux | grep s6
root      2684  0.0  0.1   1676   932 pts/2    S+   12:58   0:00 s6-svscan /service
root      2685  0.0  0.1   1680   980 pts/2    S+   12:58   0:00 s6-supervise hal
root      2686  0.0  0.1   1680   972 pts/2    S+   12:58   0:00 s6-supervise dependency1
root      2736  0.0  0.1   1684   916 ?        S    12:58   0:00 s6-svwait -u /service/dependency1
root      2737  0.0  0.2   1800  1036 ?        S    12:58   0:00 s6-ftrigrd
root      2739  0.0  0.2   1848  1080 pts/4    S+   12:59   0:00 grep s6
root@project:~# s6-svscanctl -t /service
root@project:~# ps aux | grep s6        
root      2736  0.0  0.1   1684   916 ?        S    12:58   0:00 s6-svwait -u /service/dependency1
root      2737  0.0  0.2   1800  1048 ?        S    12:58   0:00 s6-ftrigrd
root      2747  0.0  0.2   1848  1100 pts/4    S+   12:59   0:00 grep s6