我的BBS的crontab文件如下：
*/10 * * * * bin/nbstat b 1
1 0 * * * bin/nbstat m 7
*/20 * * * * bin/jingcai
*/20 * * * * save_brc &> /dev/null
57 * * * * (/home/bbs/bin/averun /home/bbs/reclog/uptime.log;/bin/rm /home/bbs/reclog/uptime.log)
*/5 * * * * bin/newtop10 -a
#*/2 * * * * ~bbs/innd/bbslink ~bbs >~bbs/tmp/portnum
1,7,13,19,25,31,37,43,49,55 * * * * /home/bbs/bin/bbsstatlog
*/10 * * * * /home/bbs/bin/searchLastMark;/home/bbs/bin/printSecLastMark
59 23 * * * /home/bbs/bin/daily.sh >/dev/null 2>&1
2 3 * * * /home/bbs/bin/bbsheavywork.sh
3 * * * * /usr/bin/wget -O /home/bbs/etc/posts/newsday
http://top.cn-bbs.org/day > /dev/null 2>&1
*/2 * * * * ~bbs/innd/bbslink ~bbs >/tmp/portnum
各位大虾帮忙解答一下后面每一条命令所起来的作用，小弟在这里谢谢了!!!
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