[systemd-devel] killproc, pidofproc, ExecStop, ExecStart -advice please

[lux-integ]

Greetings,

I am new to this list and learning to write systemd service scripts.  I would 
like to know if there  are equivalents for the shell functions:-

killproc()
pidofproc()
  
used heavily in init scripts and as described in linuxstandardbase (url below)
http://refspecs.linuxbase.org/LSB_3.1.1/LSB-Core-generic/LSB-Core-
generic/iniscrptfunc.html

If there are no such equivalents I would be gateful for guidance on the best 
way to stop daemons  specifying their process_id and  removing  the said files 
when the daemon has stopped.  

Also advice would be appreciated  on  whether in such scripts implementing
ExecStop=
then 
ExecStart=

is the recommended way to restart daemons or whether/if there are generic 
'systemd' ways   to restart daemons.

dincerely
luxInteg