Transcript Potential

UNIX
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Portable (common to many computer architectures), multitasking,
multi-user operating system
Introduced by Bell labs in mid-1960’s
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Thus, much longer history of serious computing than Windows or Apple
OS (Apple OS is practically UNIX)
Stable, secure, high performance
Practically never needs rebooting
Implementations on PC are called Linux
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Linux is only the kernel, and numerous packages with graphical interfaces
are available
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See http://www.linux.com/directory/Distributions
All distributions come with hundreds of free programs
Note LibreOffice, Octave
We use Red Hat Enterprise (this one is not free, but there exists a free
equivalent) – good for development, parallel computing
I use Fedora at home
Many people love Ubuntu (user- and media-oriented)
UNIX shell
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Seismic Un*x and GMT rely on the ability of the shell to
combine many programs for achieving a common task
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Every processing flow in Seismic Un*x and every image in
GMT should be described by a shell script
UNIX pipelines
Useful shell commands