shell程序如下所示: # cat xarg.txt #! /usr/bin/ksh for logfile in `find . -name "*.log*"` do echo "$logfile:" sed -n '/error/=' $logfile done files=($(find . -name "*log*")) echo "The length is ${#files[@]}" for file in ${
1, 使用文件 #vim /etc/motd "1 hello world" 2 ...... yes 3 no you are a shadiao 4 hahh maye you are right ddddddddddddddddddddddddddddddddddd ccccccccccccc vvv 2,python脚本 [root@localhost python]# vim 7.py f=open("/etc/motd") alllines = [lin
例子 取前三行最大ID ID from Students)AS A 这样写得到的却是整个表的最大ID值,并不是我们需要的值 要在句中加入order by ID ID from Students order by ID ) as A 但是 不能是 order by ID desc,降序也无法得到结果. 还知道为啥,请指点.
CREATE TABLE #RowCounts(NumberOfRows BIGINT,TableName VARCHAR(128)) EXEC sp_MSForEachTable 'INSERT INTO #RowCounts SELECT COUNT_BIG(*) AS NumberOfRows, ''?'' as TableName FROM ?' SELECT TableName,NumberOfRowsFROM #RowCounts ORDER BY NumberOfRows DESC
public void ReadVideoTime(String path) { long sum = 0; long num = 0; File source = new File(path[i]); Encoder encoder = new Encoder(); File[] file = source.listFiles(); for (File file2 : file) { try { MultimediaInfo m = encoder.getInfo(file2); long l