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Full Discussion: for-loop syntax
Top Forums UNIX for Dummies Questions & Answers for-loop syntax Post 302582513 by vbe on Friday 16th of December 2011 08:25:51 AM
Old 12-16-2011
Are you sure this works ?
Code:
for A in db1.tab...


If its a file how does the system know it has to read the content? (my system cant ...(ksh) )
e.g. (AIX 6.1...)
Code:
n12:/home/vbe $ cat file1
OUTPUT
INPUT
OUTPUT
INPUT
n12:/home/vbe $ for i in file1; do echo $i; sleep 1;done           
file1
n12:/home/vbe $ for i in $(cat file1); do echo $i; sleep 1;done
OUTPUT
INPUT
OUTPUT
INPUT
# aix6.1

Q2 : there is no difference (except indentation...) between the 2 portions of code you submitted: A loop that starts when the previous finishes is a sequence... so one after the other...
Last edited by vbe; 12-16-2011 at 09:30 AM.. Reason: add code sample
 

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LEARN ABOUT DEBIAN

nec2small

NEC2(1) 						      General Commands Manual							   NEC2(1)

NAME

       nec2, nec2small - Numerical Electromagnetics Code (Antenna Modelling Program)

SYNOPSIS

       nec2 [INPUT] [OUTPUT]
       nec2small [INPUT] [OUTPUT]

DESCRIPTION

       nec2,  is  a  versatile	numerical  Boundary  Element Method (commonly called Method of Moments) antenna modelling code for the analysis of
       antennas and other metal structures.  It solves the integral equations for the currents induced on the structure  by  sources  or  incident
       fields.	The structure may either be excited by voltage sources on the structure, or by an incident plane wave of either elliptic or linear
       polarisation.  The structure and excitation are described in the INPUT file and the output is written to OUTPUT.

OPTIONS

       Due to the age of the program, it expects input in the form of punched cards fed into a hopper.	It currently does not accept any options.

       If OUTPUT is omitted, output is written to stdout and if INPUT and OUTPUT are omitted then the input is taken from  stdin  and  the  output
       written to stdout.

       The  maximum  size  of  problem which the code can handle must be hard coded at compile time and no dynamic memory allocation is performed.
       Two versions are therefore provided suitable for different sizes of problem, nec2 is compiled for a maximum of 10000 wire segments and 5000
       surface patches, while nec2small is compiled for a maximum of 600 wire segments and 200 surface patches.

SEE ALSO

       somnec(1)

       The  NEC-2 code is fully documented in the report Numerical Electromagnetics Code (NEC) -- Method of Moments" by Burke and Poggio, which is
       available as a printed publication in three parts covering the theory of operation, the program code and the  users'  manual.   An  updated
       form of the users' manual part of this report can be found in /usr/share/doc/nec/NECdoc

BUGS

       nec2  has been superseded by nec4, but this revised code has not been made available to the public, so it is possible that some bugs remain
       in this version.

       Also note that many variant source codes exist based on the original FORTRAN-IV listing in the report.  This one is  believed  to  be  cor-
       rectly working, but may still contain extra errors.

AUTHOR

       This manual page was written by	<alanb@chiark.greenend.org.uk>.  The program was developed by G. J. Burke and A. J. Poggio of the Laurence
       Livermore Laboratory.

																	   NEC2(1)
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