Linux View the detailed process startup time and record the process startup PID

1. Linux to view the detailed time when the process starts to execute

ps -p PID -o lstart

2. Record the process startup ID

# !/bin/sh

SUNNY_LOG=/home/anicloud/projects/sunny/sunny/
cd $SUNNY_LOG

nohup mvn tomcat7:run > $SUNNY_LOG/sunny.log &
echo $! > $SUNNY_LOG/sunny.pid