When I work with Java it can be handy to grep for a string in a JAR, so I have created an executable script called "jargrep".
#!/bin/bash
# Greps a jar file for a string.
if [ $1 ] ; then
find . -name "*.jar" -a -exec bash -c "jar tvf {} | grep $1" \; -print
else
echo "Usage: jargrep [string]"
echo " Example: jargrep \"string to grep for\""
fi
There is a pretty serious bug in bash that you can read about in more detail in this article: http://arstechnica.com/security/2014/09/bug-in-bash-shell-creates-big-security-hole-on-anything-with-nix-in-it. In short, you are currently vulnerable and can test it by running this:
env x='() { :;}; echo vulnerable' bash -c "echo you are vulnerable"
you are vulnerable
Generating random numbers isn't the most straight forward. Here is the correct way to do it in C/C++:
Windows:
int randomNumber;
if (rand_s(&randomNumber))
{
return randomNumber;
}
else
{
//TODO error
}
Unix/Linux:
int randomNumber;
int fd = fopen("/dev/random", O_RDONLY));
if (fd > 0 && read(fd, &randomNumber, 4))
{
return randomNumber;
}
else
{
//TODO error
}
Friday, September 19 is International Talk Like a Pirate Day 2014.
Cloud solutions are great. They usually are free, or pretty inexpensive for what you get. However you do give the company access to your data which is how they are making money most of the time. But my point of this post isn't too discuss the nuances of how the companies make money or whether you should give the companies your data for free in exchange for a useful tool. My point is should you even depend on them? Most of them are touting themselves as more reliable than your desktop and your own backup system. It's true that the best backup is the one that you do, but you also have to be able to get to your data. Obviously the choice depends on what you are putting into the cloud because of reliability of the service and the sensitive nature of the data.
If you are a student writing a term paper for instance, Google Drive, Apple iCloud, or Microsoft office 365 are all free and are very compelling. However OpenOffice and Apple Pages are also free, and if something goes wrong your term paper won't be bit dust.
What made me think of this is Apple just rolled out iOS 8, and in doing so upgraded iCloud to iCloud Drive. Brilliant because now it's more on par with Google Drive, however the fine print says that when upgrading to iCloud dries only iOS 8 and OS X Yosemite support iCloud Drive. Only developers are running Yosemite so this seems like a rather odd thing to do. So until Yosemite is out I guess I won't be using iCloud.
After changing my password for my CalDAV server I started getting this error:
"The server responded with an error.
The server did not recognize your user name or password for account "
I haven't posted in some time so a few readers (and friends) have contacted me to see if I'm still alive. I'm happy to report that I am alive and I'll be posting more often. The last few years have been, well they've been extremely busy and a lot of things have come up that have been, well, more important than this blog. But, that's about to change so stay tuned!
