Unix

Say you need to md5sum 46 files, all ending in “.foo” in a single directory. You might use your standard md5sum *.foo > md5sum.txt command to checksum them all in one process. Get coffee, it’s done, move on.

I don’t do a lot of Solaris anymore, and though I’m interested in several of the new features in the upcoming Solaris 11, I wasn’t aware until today that it wouldn’t run on most legacy UltraSPARC systems:

I just learned about pbzip2, which lets your multicore computer use more than one core when using the bzip2 compression algorithm.

Despite what you might read at docs.sun.com, Solaris 10 update 6 doesn’t have a “-u” option for zfs receive.

Today I wanted to move a Solaris 9 zone running on a Solaris 10 test server to a new ZFS dataset within the same ZFS pool with compression enabled. This container is an archive of an environment we don’t use very much, normally leave shut down, and intend to delete fairly soon, but since it’s a flash archive of a Solaris 9 machine, it takes up a lot of space on the test system’s local disks.