摘要： grep "zf\|lk" doc grep -E "^2\.[0-9]{1,2}\s" doc egrep "^2\.[0-9]{1,2}\s" doc 阅读全文

摘要： sed -i s/999999999999999/99999900000/g 'grep 999999999999999 -rl --include="*.sql" ./' find / -iname *.ext|xargs grep aaa|awk -F":" '{print $1}'|xargs 阅读全文

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摘要： 1.self introduce 2.Spring boot spring cloud application scenarios。 3.The most contributed project from demand to online:what process has gone through 阅读全文

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摘要： import java.util.Random; public class BTree<Key extends Comparable<Key>, Value> { private static final int M = 4; private Node root; private int heigh 阅读全文

摘要： 1.wm_concat 2.pivot 3.sum(decode/case when) group by 4.listagg select stu_code ,listagg(score, ',') within group(order by score) ,listagg(subject,',') 阅读全文

摘要： CTL-T F4 阅读全文

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