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    January 15

    Install DB2 v7 on RedHat Linux 9

    Long time ago since I installed db2 v7 on my linux box.
    a fewsteps  I still remembered are:
     
    1. pdksh... don't know the version, RH 9's pdksh is OK
     
    2. old libc... RH had old libc compatible package compat-glibc-6.2-2.1.3.2
     
    3. libncurses, db2setup use old libncurses also, in my box file /usr/libncurses.so.4 is symbol link to /usr/i386-glibc21-linux/lib/libncurses.so.4.0, this file is a part of compat-glibc-6.2-2.1.3.2
     
    4. /etc/sysctl.conf, we need change a default kernel parameter, put those line in to sysctl.conf
    # Set maximum number of message queues to 128
    # Set this to 1024 or higher on production systems
    kernel.msgmni = 128
     
    -------------------------
    4.5 db2setup goes here....
    -------------------------

    5. finally we need 2 env. vars
    export LD_ASSUME_KERNEL=2.2.5
    export DB2ENVLIST=LD_ASSUME_KERNEL
    6. try db2start ;-)
    These'are also a lots of  HOWTOs around the net...
    9:31:17 PM | Add a comment | Read comments (3) | Permalink | Blog it | Computers and Internet
    November 16

    前段时间研究vi宏的一个小实验品

    在命令模式下按shift-v就可以在当前位置插入系统日期
     
    只要在$(HOME)/.exrc里面加入下面的字符影射代码
     
    map V ma:r !date +\%Y-\%m-\%d^MD`apjdd`a10l
    2:53:53 PM | Add a comment | Permalink | Blog it | Computers and Internet

    libxml2中使用GB2312

    libxml2 的内部处理使用的是UTF-8取到的字符串是UTF-8编码的，在GB2312的程序中的转码就是下面这样了。感觉还有更好的支持中文的方法。。。。。
    char *
    xmlNodeGetContentGB2312(xmlNodePtr node)
    {
        char *i, *o, *bo, *bi, *fin;
        int ci, co, memsize;
        iconv_t gb;
        i = xmlNodeGetContent(node);
        if ( i == NULL) {
            return NULL;
        }
        ci = strlen(i)+1;
        o = (char *)xmlMalloc(ci);
        co = ci;
        memsize = co;
        bo = o;
        bi = i;
        gb = iconv_open("GB2312", "UTF-8");
        if ((int)gb == -1) {
            LOGMSG0("打开UTF-8到GB2312的编码转化函数出错");
            xmlFree(bo);
            xmlFree(bi);
            return NULL;
        }
        if (iconv(gb, &i, &ci, &o, &co) !=  0) {
            LOGMSG0("转化UTF-8到GB2312的编码出错");
            xmlFree(bo);
            xmlFree(bi);
            iconv_close(gb);
            return NULL;
        }
        xmlFree(bi);
        iconv_close(gb);
        fin = xmlRealloc(bo, memsize-co);
        if (fin == NULL) {
            LOGMSG0("内存出错");
            xmlFree(bo);
            return NULL;
        }
        return fin;
    }
     
    11:20:14 AM | Add a comment | Permalink | Blog it | Computers and Internet