linux删除文件前面及后面几行替换*

ls

mv *.txt aa.txt

mv xx.txt aa.txt

cat aa.txt| grep -v "^SQL>" | more

cat aa.txt| sed -e '1,42d' | more

cat aa.txt| sed -e '1,42d' >>aabak.txt

wc -l aa.txt

cat aabak.txt|sed -e '47542,47545d' |tail

mv 200901dh_new.txt /u02/work

cat get_759_pre_rebate_20090302175516.unl | sed -e 's//*/|/'

awk -F"|" '$3 == "33" { print $0 }' get_759_pre_rebate_20090303093509.bak | head

cat 200902月.txt| sed -e 's/,/|/g'|more