Here's a morse code tutor I've been using. It works on Windows, Linux, Mac and Dos: http://c2.com/morse/
I find that using
scp to repeatedly copy files to a remote host gets tedious. Setting up NFS or Samba is often either not a viable choice, or is more work than seems warranted. Recently, I started using SSHFS, which I highly recommend. It works well because most servers I connect to support SSH, and therefore, my Linux box can use SSHFS to connect to them. Here are instructions for setting it up on Fedora Linux: http://fedorasolved.org/server-solutions/sshfs/
Recently, I was asked to constrain the memory usage of an application on Linux. Glibc provides hooks for malloc, free, etc. By the way, the hook functions are responsible to guarantee thread safety -- glibc doesn't do it automatically. I used the malloc hooks in combination with a memory manager that a colleague found: TLSF. There are two implementations:
There are benefits and caveats when using a custom memory allocator. TLSF was meant to shine for real-time use, because the overhead of malloc and free are O(1) constant-time operations. On the other hand, TLSF isn't thread-safe.