CPP_CHEN的专栏

问题：(Linux 环境) 有一个database (Binary file)，被很多clients共享，每个client都有可能read/write这个database。所以正常情况下，每个client在write这个database之前，都需要先hold一把file lock。但发现有一个/一些client并没有遵守这种约定(规则)。如何找出没有遵守这种约定的client(s). 解答：要找

这两天工作当中碰到netcat的一个小问题。nc [IP] [PORT] < xml_request之后，没有任何output，当时以为是server端，没有正确处理好xml response或者xml_request有问题。后来对server端进行调试，发现server端其实已经向netcat发送了response。但为什么netcat没有显示任何的response ？ 使用strace对net

This related to the C shell and the special characters like "?" {nsgb26}ken_410: echo $SHELL /bin/csh {nsgb26}ken_411: gdb --args./smController -? gdb: No match. {nsgb26}ken_412: ./smController

http://mina.naguib.ca/blog/2012/10/22/the-little-ssh-that-sometimes-couldnt.html

On site problem: -- I have written a simple program which recursively traverses the file system (NFS/CIFS or local file system) to get meta data of each file/directory. While I launched two instan

Using ptrace allows you to set up system call interception and modification at the user level. Have you ever wondered how system calls can be intercepted? Have you ever tried fooling the kern