.TH g_saltbr 1 "Mon 4 Apr 2011" "" "GROMACS suite, VERSION 4.5.4-dev-20110404-bc5695c"
.SH NAME
g_saltbr - computes salt bridges

.B VERSION 4.5.4-dev-20110404-bc5695c
.SH SYNOPSIS
\f3g_saltbr\fP
.BI "\-f" " traj.xtc "
.BI "\-s" " topol.tpr "
.BI "\-[no]h" ""
.BI "\-[no]version" ""
.BI "\-nice" " int "
.BI "\-b" " time "
.BI "\-e" " time "
.BI "\-dt" " time "
.BI "\-t" " real "
.BI "\-[no]sep" ""
.SH DESCRIPTION
\&\fB g_saltbr\fR plots the distance between all combination of charged groups
\&as a function of time. The groups are combined in different ways.
\&A minimum distance can be given (i.e. a cut\-off), such that groups
\&that are never closer than that distance will not be plotted.


\&Output will be in a number of fixed filenames, \fB min\-min.xvg\fR, \fB plus\-min.xvg\fR
\&and \fB plus\-plus.xvg\fR, or files for every individual ion pair if the \fB \-sep\fR
\&option is selected. In this case, files are named as \fB sb\-(Resname)(Resnr)\-(Atomnr)\fR.
\&There may be \fB many\fR such files.
.SH FILES
.BI "\-f" " traj.xtc" 
.B Input
 Trajectory: xtc trr trj gro g96 pdb cpt 

.BI "\-s" " topol.tpr" 
.B Input
 Run input file: tpr tpb tpa 

.SH OTHER OPTIONS
.BI "\-[no]h"  "no    "
 Print help info and quit

.BI "\-[no]version"  "no    "
 Print version info and quit

.BI "\-nice"  " int" " 19" 
 Set the nicelevel

.BI "\-b"  " time" " 0     " 
 First frame (ps) to read from trajectory

.BI "\-e"  " time" " 0     " 
 Last frame (ps) to read from trajectory

.BI "\-dt"  " time" " 0     " 
 Only use frame when t MOD dt = first time (ps)

.BI "\-t"  " real" " 1000  " 
 trunc distance

.BI "\-[no]sep"  "no    "
 Use separate files for each interaction (may be MANY)

.SH SEE ALSO
.BR gromacs(7)

More information about \fBGROMACS\fR is available at <\fIhttp://www.gromacs.org/\fR>.