#
head: 顯示文件內容的前幾行
head -n 10 readme
tail: 顯示文件內容的后幾行
tail -n 10 readme
通過grep查找文件內容
cat?readme | grep "intro"
后臺下載wget -c url -o log &
查看下載tail -f log
壓縮文件夾:?? tar -czvf docs.tag.gz docs/
顯示壓縮包:?? tar -tvf? docs.tar.gz
解壓縮: tar -xzvf docs.tar.gz
解壓縮到指定的目錄: tar -xzvf docs.tar.gz -C /home/tmp/
解壓部分文件: tar --wildcards -zxvf docs.tar.gz "*java*"
中文輸入
在~\.inputrc,設置：
set meta-flag on
set convert-meta off
set output-meta on
set input-meta on
set completion-ignore-case on
中文顯示
在~\.bashrc中,設置：
alias ls='ls --show-control-chars --color=auto'
?
ps -ef | grep 'str' |awk '{ print "kill -9 " $2 }' | sh
好久沒有"光明正大的"玩玩新的開源框架了,因為是leader指定的,所以可以在工作時間專心學習.
Solr is an open source enterprise search server based on the Lucene Java search library, with XML/HTTP and JSON APIs, hit highlighting, faceted search, caching, replication, and a web administration interface. It runs in a Java servlet container such as Tomcat.
Solr has graduated from the Apache Incubator, and is now a sub-project of Lucene.
上周換了新工作,主要做wap開發.由于還是采用java技術,基本上沒有什么變化,只是前端的html變成wml而已.
摘要: EJB3 -- TopLink JPA
閱讀全文
The AJAX Tag Library is a set of JSP tags that simplify the use of Asynchronous JavaScript and XML (AJAX) technology in JavaServer Pages.
AjaxTag是通過一個Helper class(AjaxXmlBuilder)生成一段xml, 讓客戶端js(ResponseXmlParser)解析.
//
?Get?maker?from?your?service?bean
CarService?service?
=
?
new
?CarService();
List?list?
=
?service.getModelsByMake(make);
return
?
new
?AjaxXmlBuilder().addItems(list,?
"
model
"
,?
"
make
"
).toString();
Latest Release: 1.2 beta2
下載ajaxtags-1.2-beta2.war, 在tomcat下deploy后即可看到各種tag的用法. 官方有詳細的Install, Quick Start, Usage文檔.
Oracle 9i沒有
DBMS_SCHEDULER可用, 只能用回
DBMS_JOBdeclare
????v_job_num?NUMBER;
begin
??dbms_job.submit(v_job_num,
??????????????????'test;',
??????????????????to_date(to_char(sysdate,?'yyyy-mm-dd')?||?'?23:59:00',?'yyyy-mm-dd?hh24:mi:ss'),
??????????????????'to_date(to_char(sysdate,?''yyyy-mm-dd'')?||?''?23:59:00'',?''yyyy-mm-dd?hh24:mi:ss'')?+?1');
??commit;
end;
/
參考: ora92_doc/server.920/a96521/jobq.htm#750
跟dbms_scheduler比起來, dbms_job有點弱智, 怪不得10g要放棄. in 10g, The DBMS_JOB package has been superseded by the DBMS_SCHEDULER package.