Comment by gwu78

Example line from the Openshift reload-haproxy script:

  old_pids=$(ps -A -opid,args | grep haproxy | egrep -v -e 'grep|reload-haproxy' | awk '{print $1}' | tr '\n' ' ')

Can we do this without grep, egrep and awk? Would this work?

  old_pids=$(exec ps -A -opid,args |sed -n '/sed/d;/reload-haproxy/d;/haproxy/{s/ .*//;p};'|tr '\n' ' ')