Sometimes we need to start a server program during the post-boot system initialization after the network has become available. On Linux systems using the Upstart init daemon, this can be done as described here.
Although md5sum checksum file is a text file, it has a special format. If the checksum file is not as per this format, we get the error, md5sum: no properly formatted MD5 checksum lines found.
In the X-Window system, the terms client and server are somewhat changed. The X-server running on an host and managing the display is the server, whereas an application running on the same host or some other host on the network is the client. Here, we look at the problem of a local application, the client, using the display, or the X-server, of a remote host.
JRobin is a Java port of the famous RRDTool package. While trying to save a graph as a PNG file, we run into problems as the saveAsPNG gives a compile time error. But there is a solution as described, here.
