Carlier Group Gaussian User Manual - Virginia Tech

Carlier Group Gaussian User Manual 5
With this command one can scroll up and down instead of just down with the more
command)
While using more or less, you can skip ahead to the search term you desire by typing
/search term
You can also feed the input of a certain command to more, such as
ls *.gjf | more
The vertical line is called a 'pipe' and it takes the output of the first command ls *.gjf and
displays it screen by screen. In this case you will get a listing of all the .gjf files in the
directory.
To look for a particular word or multi-word phrase in a file
egrep word filename.out
egrep ‘multiword phrase’ filename.out
These commands will look for the line containing the searchterm within a file and print it
out. You need the single quoted only for the multiword phrase search. This is a
fantastic command that you will use all the time. Note the egrep and grep are very
similar and in most cases can be used interchangeably.
E. Permissions
Note: as described below in 1.I below, we have a new group directory at /home/PRC. I
highly recommend use of this directory to share files within our group. Permissions are
set to make this filesharing as seamless as possible. Nevertheless, if you are
interested to learn about how to set permissions in your own directory, please read this
section.
To gain a better understanding of this important subject I recommend that you refer to
Unix for Dummies or Unix-A Visual Quickstart Guide.
If you want to allow everyone to view and copy files from a folder in your directory, go to
your home directory and type:
chmod 755 .
The string 755 defines permissions and will be explained below. The period signifies
the current directory and this will change the accessibility on your home directory to
make the contents viewable, then, go to the public directory (e.g. pub)
cd pub
chmod 755 .