发布时间：2014-05-23 18:39:05
Secure hash functions in Java (ctd)From http://www.javamex.com/tutorials/cryptography/hash_functions_algorithms.shtmlNow we've seen an introduction to hash functions, let's look at how to compute a hash in Java. As mentioned, secure hashes are sometimes calledmessage digests. And.........【阅读全文】
发布时间：2014-05-22 19:48:31
参考： http://stackoverflow.com/questions/1019116/using-ls-to-list-directories-and-their-total-sizesroot@server4:/data# lsacs-provider apkftp app_resource bakup base-provider-0.0.1-SNAPSHOT Collector log4j.xml user-providerroot@server4:/data# du -sk.........【阅读全文】
发布时间：2014-05-22 14:14:56
使用ps a查看进程使用kill干掉进程root@server9:/data/Collector# nohup sh startDownloadMain.sh &[1] 9065root@server9:/data/Collector# -bash: root@server9:/data/Collector#: No such file or directory[1] 9044root@server9:/data/Collector# nohup: ignoring .........【阅读全文】
发布时间：2014-05-22 11:53:27
http://stackoverflow.com/questions/4660871/mysql-select-all-items-from-table-a-if-not-exist-in-table-bhttp://stackoverflow.com/questions/11767565/mysql-select-rows-from-a-table-that-are-not-in-anotherSELECT * FROM Table1 WHERE id NOT IN (SELECT id FROM Table2)SELECT * FROM table1 t1 WHERE NOT E.........【阅读全文】
发布时间：2014-05-22 11:24:46
删除/tmp目录下以hello开头的文件夹cd /tmprm -r hello*......【阅读全文】
