sed -n 筛选数据(从行到行)

sed -n ''478142,919384''p alert_sid.log |grep "add datafile" >t.txt
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 #!/usb/bin/ksh
 cd /home/oracle/admin/sid/bdump
 dd=`date +%Y%m%d`
 riqi=`date |cut -c1-10`
 year=`date | awk '{print $6}'`
 hang=`grep -nE ^"$riqi".*"$year"$ alert_sid.log|head -1|cut -d: -f 1`
 sed -n ''"$hang",$''p alert_sid.log|grep ORA- >file.txt