public documents.sextractor_doc

\chapter{Using {\sc SExtractor}}
\label{chap:using}
{\sc SExtractor} is run from the shell with the following \index{syntax} syntax:
 
\% ~ {\tt sex} ~ {\em image1} {\tt [ }{\em image2\ }{\tt  ]} {\tt [ -c}
{\em configuration-file\ }{\tt ]} ~ {\tt [ -}{\em Parameter1} {\em Value1\ }{\tt ]}
~ {\tt [ -}{\em Parameter2} {\em Value2\ }{\tt ]} {\tt [} ... {\tt ]}
 
The parts enclosed within brackets are optional. The file names of input
catalogues can be directly provided in the command-line, or in lists that are
ASCII files with
each catalogue name preceded by
'@' (one per line). 
% Lists are ASCII files containing the input file names (one per line).
One should use lists instead of the catalogue file names if the number of
input catalogues is too large to be handled directly by the shell.
Any ``{\tt -}{\em Parameter} {\em Value}" statement in the command-line overrides
the corresponding definition in the configuration-file or any default
value (see below).