NOAA / NESDIS / National Geophysical Data Center / WDC for SEG, Boulder, Colorado USA

Wildcards

UNIX has the ability to refer to a number of files and/or directories using ``wildcards''. The wildcard for a single character is ``?'' and for any number of characters is ``*''. For example, to refer to all the files beginning with ``ex'' in the directory:

/usr/local/pmag1.0/datafiles,

we use:

/usr/local/pmag1.0/datafiles/ex*.

To refer only to those from Chapter 1, we use:

/usr/local/pmag1.0/datafiles/ex1.? .