You might start looking at some approaches to the cloud that sound really good. But before you jump in, do the math. How large is your company? What's the nature of your computing environment? How many applications do you support? How much does your current environment cost? How much spare capacity do you have in your data center? Are there applications that can cost effectively be moved to a Software as a Service model? Before you do anything, follow the money.
The setuid permission on an executable file means that the command will run as the user owning the file, not as the user that ran the command. One example is the passwd command: [student@desktopX ~]$ ls -l /usr/bin/passwd -rw s r-xr-x. 1 root root 35504 Jul 16 2010 /usr/bin/passwd In a long listing, you can spot the setuid permissions by a lowercase s where you would normally expect the x (owner execute permissions) to be. If the owner does not have execute permissions, this will be replaced by an uppercase S . The special permission setgid on a directory means that files created in the directory will inherit their group ownership from the directory, rather than inheriting it from the creating user. This is commonly used on group collaborative directories to automatically change a file from the default private group to the shared group, or if files in a directory should be...
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