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Top Forums Shell Programming and Scripting a little help with using AWK to display whats being read in Post 302630135 by subway69 on Wednesday 25th of April 2012 01:08:20 PM
Old 04-25-2012
Quote:
Originally Posted by vgersh99
not tested....
Code:
#!/bin/sh 
while :
do
   echo 'Please enter a car model:    '
   read model     
   awk '$2 ~ m {print $1, $2, $3, $4; _e=1}END{exit _e}' m="${model}" /home/cars/    
   if [ $? -eq 0 ]; then       
      echo "There are no matching cars Enter a car model: "
   else
      exit
   fi
done

What I did is use an until loop and it worked so far but after adding in the prompt to return an error

Code:
#!/bin/sh
echo Please enter a car model:
read model

echo $model | grep /home/cars > /dev/null
until [ $? = 0 ]
do
  echo "No matching models found."
  echo "Please enter a car model: "
  read model
  echo $model | grep /home/cars > /dev/null

done

grep $model /home/cars
awk '$2 ~ m {print $1, $2, $3, $4}' m="${model}" /home/unix/assets/cars

I'm trying to say as long as the model shows up in that file keep re prompting for a car, this is a pretty bad job on my part trying to jam stuff in there trying to get it to work. So until the argument is true that the model shows up in the /cars file, keep re prompting. That is what I am trying to do. . any advice? Thanks for your help

---------- Post updated at 12:08 PM ---------- Previous update was at 11:18 AM ----------

edit: I fixed it thank you for your help!
 

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ADDLOMODEL(3)						       MBK LOGICAL FUNCTIONS						     ADDLOMODEL(3)

NAME
addlomodel - create a tempotary logical model and add it to a list ORIGIN
This software belongs to the ALLIANCE CAD SYSTEM developed by the ASIM team at LIP6 laboratory of Universite Pierre et Marie CURIE, in Paris, France. Web : http://asim.lip6.fr/recherche/alliance/ E-mail : alliance-users@asim.lip6.fr SYNOPSYS
#include "mlo.h" lofig_list *addlomodel(model, name) lofig_list *model; char *name; PARAMETERS
model Pointer to the head of a model list name Name of the model to be created DESCRIPTION
addlomodel creates a new lofig_list element and adds it to the front of the list pointed to by model, and becomes itself the list head. The addlomodel function is mosty used to create a temporary list of lofig in order to represent the "in file" instances' models. In fact, all the file format used with mbk have the notion of models local to files, so they are not figure, but are temporarly used to create instance connectors, for example. For details on the structure, see lofig(3). RETURN VALUE
addlomodel returns a pointer to the new head of model list. ERROR
"*** mbk error *** addlomodel impossible : model name already exists" The model, not the figure, is already present in the model list pointed to by model, and since a model should be unique, this can't be. EXAMPLE
#include "mut.h" #include "mlo.h" void add_model(name) char *name; { MODEL = addlomodel(MODEL, name); } SEE ALSO
mbk(1), lofig(3), getlomodel(3), freelomodel(3). BUG REPORT
This tool is under development at the ASIM department of the LIP6 laboratory. We need your feedback to improve documentation and tools. ASIM
/LIP6 October 1, 1997 ADDLOMODEL(3)
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