<H4><A NAME = "2_6"></A>2.6 Command-line options 

</H4>

<P>At run time, LAMMPS recognizes several optional command-line switches

which may be used in any order.  For example, lmp_ibm might be

launched as follows:

which may be used in any order.  Either the full word or the

one-letter abbreviation can be used:

</P>

<UL><LI>-echo or -e

<LI>-partition or -p

<LI>-in or -i

<LI>-log or -l

<LI>-screen or -s

<LI>-var or -v 

</UL>

<P>For example, lmp_ibm might be launched as follows:

</P>

<PRE>mpirun -np 16 lmp_ibm -var f tmp.out -log my.log -screen none < in.alloy 

</PRE>

<P>These are the command-line options:

<P>Here are the details on the options:

</P>

<PRE>-echo style 

</PRE>

multi-partition mode, if the specified file is "none", then no screen

output is performed.

</P>

<PRE>-var name value 

<PRE>-var name value1 value2 ... 

</PRE>

<P>Specify a variable that will be defined for substitution purposes when

the input script is read.  "Name" is the variable name which can be a

single character (referenced as $x in the input script) or a full

string (referenced as ${abc}).  The value can be any string.  Using

this command-line option is equivalent to putting the line "variable

name index value" at the beginning of the input script.  Defining an

index variable as a command-line argument overrides any setting for

the same index variable in the input script, since index variables

cannot be re-defined.  See the <A HREF = "variable.html">variable</A> command for

more info on defining index and other kinds of variables and <A HREF = "Section_commands.html#3_2">this

string (referenced as ${abc}).  An <A HREF = "variable.html">index-style

variable</A> will be created and populated with the

subsequent values, e.g. a set of filenames.  Using this command-line

option is equivalent to putting the line "variable name index value1

value2 ..."  at the beginning of the input script.  Defining an index

variable as a command-line argument overrides any setting for the same

index variable in the input script, since index variables cannot be

re-defined.  See the <A HREF = "variable.html">variable</A> command for more info on

defining index and other kinds of variables and <A HREF = "Section_commands.html#3_2">this

section</A> for more info on using variables in

input scripts.

</P>

2.6 Command-line options :h4,link(2_6)

At run time, LAMMPS recognizes several optional command-line switches

which may be used in any order.  For example, lmp_ibm might be

launched as follows:

which may be used in any order.  Either the full word or the

one-letter abbreviation can be used:

-echo or -e

-partition or -p

-in or -i

-log or -l

-screen or -s

-var or -v :ul

For example, lmp_ibm might be launched as follows:

mpirun -np 16 lmp_ibm -var f tmp.out -log my.log -screen none < in.alloy :pre

These are the command-line options:

Here are the details on the options:

-echo style :pre

multi-partition mode, if the specified file is "none", then no screen

output is performed.

-var name value :pre

-var name value1 value2 ... :pre

Specify a variable that will be defined for substitution purposes when

the input script is read.  "Name" is the variable name which can be a

single character (referenced as $x in the input script) or a full

string (referenced as $\{abc\}).  The value can be any string.  Using

this command-line option is equivalent to putting the line "variable

name index value" at the beginning of the input script.  Defining an

index variable as a command-line argument overrides any setting for

the same index variable in the input script, since index variables

cannot be re-defined.  See the "variable"_variable.html command for

more info on defining index and other kinds of variables and "this

string (referenced as $\{abc\}).  An "index-style

variable"_variable.html will be created and populated with the

subsequent values, e.g. a set of filenames.  Using this command-line

option is equivalent to putting the line "variable name index value1

value2 ..."  at the beginning of the input script.  Defining an index

variable as a command-line argument overrides any setting for the same

index variable in the input script, since index variables cannot be

re-defined.  See the "variable"_variable.html command for more info on

defining index and other kinds of variables and "this

section"_Section_commands.html#3_2 for more info on using variables in

input scripts.