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Carlier Group Gaussian User Manual - Virginia Tech

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<strong>Carlier</strong> <strong>Group</strong> <strong>Gaussian</strong> <strong>User</strong> <strong>Manual</strong> 3<br />

Basic commands:<br />

mkdir to create directory<br />

rm to delete file<br />

mv to move file<br />

cp to copy file<br />

Directory symbols:<br />

a single period . means the current directory<br />

two periods .. means the directory above,<br />

The two period symbol .. is very useful for moving around and for copying/moving files<br />

with relative pathnames (see below).<br />

B. Pathnames<br />

Absolute pathnames start with / because this symbolizes the root directory<br />

relative pathnames start without a / --that is the key difference<br />

To move a file to a directory in another branch, you must pay attention to this distinction.<br />

If you want to use an absolute pathname you must start with /home. If you want to use<br />

relative pathnames, you can use the .. symbol to go up a level. For example<br />

ex. file in run, want to move to store, both run and store directories are in pcarlier<br />

from the run directory type<br />

mv filename.gjf /home/pcarlier/store/<br />

or you can use a relative pathname<br />

mv filename.gjf ../store/<br />

C. Text Editors<br />

You will need to use a text editor to create and modify your g09 input files, and to<br />

search your output files. As far as I know, vi (or vim) is the only editor available on<br />

Inferno2. This is the least friendly, but most powerful editor in Unix. Consult our Unix<br />

books for how to use it. If you choose vim, here are some helpful hints:<br />

1. Vim is a modal editor. On launch you are in “command mode.” To get to<br />

“insert mode,” type “i”. Now you can type or delete text as you would in a normal word<br />

processor. To get back to command mode, hit the “esc” key.<br />

2. In command mode, a few helpful commands to get you started are

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