shell脚本日志指南（1）

1.初始化日志文件。对文件的大小进行判断和压缩

LOG=$
if [ -e "${LOG}" ];then
   LOG_SIZE=`ls -l "${LOG}"| awk '{print $5}'`
   if [ "${LOG_SIZE}" -gt  ];then
     LOG_SUFFIX="."`date +%Y%m%d`".gz"
     gzip "${LOG}"  -S ${LOG_SUFFIX}
   fi
fi

2.写日志

PS=$$
LOG=/home/centos/.log
function LOG()
{
 echo -e "[ `date +'%y-%m-%d %T'`] [$PS]:$*" | tee -a "${LOG}"
}

LOG "error" "BATCH head procedure is failed"

[centos@s202 ~]$ sh test5.sh
[ -- ::] []:error BATCH head procedure is failed
[centos@s202 ~]$ cat -n .log
       [ -- ::] []:error BATCH head procedure is failed