OS_Lib

1. find dir
2. grep regex from file or dir, ignore case or not
3. pack dir without files whose name match specific regex
4. rm files whose name match to specific regex in specific dir
Net Lib

1. Test Port
2. Check WebServer
3. FTP
4. Telnet
5. Get URL
Net Lib

1. Test Port
2. Check WebServer
3. FTP
4. Telnet
5. Get URL
6. SSH & SFTP
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