下面程序在linux fc7 下用gcc编译 #include #include #include #include #include #include main(int argc,char * argv[] ) { int fd1,fd2,l; void * tp; char *path; char buf[50]; struct stat ps; path=buf; printf("enter a path:"); scanf("%s",path); printf("%s",argv[1]); fstat(fd1.&ps); if(fd1=(open(argv[1],O_RDONLY))==-1) {printf("error1");exit(1);}...

我在用户的crontab里加了这样一个脚本： 1 * * * * sh /usr/local/bin/cron880_sqwen.sh >; /dev/null & 之后系统总是向我发这样的mail: Your "cron" job on sqwen sh /usr/local/bin/cron880_sqwen.sh >; /dev/null & produced the following output: stty: : No such device or address stty: : No such device or address 请问是怎么回事啊？ 难道我的/dev/null不存在吗？可明明有的啊

127.0.0.1. is so called loopback address. and i dont know what this address use for? can somebody help me to explain, thanks very much!

我知道网络上一台PC的MAC地址，根据MAC地址怎么得到这台PC的IP地址？请高手指点.

load时如果字段中有“/”就会被过滤掉

各位大侠： 小弟有以下问题，希望各位能给以解决，谢谢 load 的时候发现以下错误： 805: Cannot open file for load.

unload to 1111.txt select mxbz,kh_kh,je,polno,kh_mc,jylx,by1,by2,by3,by4 from XXXXXX where time = today 我想在这个1111.txt 文件的第一行加上一条汇总数据所写sql如下 unload to 11111.txt select hzbz,gsdm,ssjph,sfbz,zjs,zje,by1,by2,'','' from XXX_hz where time = today union select mxbz,kh_kh,je,polno,kh_mc,jylx,by1,by2,by3,by4 from XXXXXX where time = today 但是xxx_hz中的jssph和xxxxx中的je 还有xxx...

我现在要装一台备份机,开始从要备份的机器中导出sybase数据库agentdb结构和数据: isql -Uagent -Ptzagent 1>dump database agentdb to '/tmp/agentdb' 2>go 然后将agentdb取到备份机器/tmp/,执行: isql -Uagent -Ptzagent 1>load database agentdb from '/tmp/agentdb' 2>go 报错: Msg 3101,Level 16,State 1: Line 1: Database in use.A user with System Adminstrator (SA) role must have exclusive uSE OF DATABASE TO RUN LOA...

load时候用不用建设备，还是装sybase后直接load就ok了？

I had created a db2 script which will load data from 1 server to another server. My problem is whenever my load process failed then it will lock the tablespace so I wonder is there any way to avoid this problem? I means is there any code can auto fire whenever there is a tablespace state fall into load pending? Please advise