Shell Programming and Scripting

I am trying to use which to set a local variable to hold where an app is installed.

Code:

InstallDir=which app.exe
echo $InstallDir

When I run "which app.exe" from the shell I get,
/cygdrive/c/Program Files/app 1.0.2/bin/app.exe

When I add "InstallDir=which app.exe" to my script, it just starts the app. Should I be doing something like "which app.exe > InstallDir"?

LMHmedchem

Hi.

It "just starts" the app because:

Code:

 Set variable "InstallDir to 'which'"
         |
         |    Run "app.exe"
         |            |
---------------- -------
InstallDir=which app.exe

The syntax should be:

Code:

InstallDir=$(which app.exe)

Thanks, that works fine. I am using the cygwin version of the Bourne shell.

LMHmedchem

I know, the "what OS, etc...." was a stupid question, so I removed it from my post

I am still stuck a bit, and I am not sure what the problem is.

I am running,

Code:

#!/bin/bash

   InstallPath=$(which app.exe)
   ScriptLoc=$(pwd)
   
   echo -n "Enter the number of batches (default is 50): "
   read BATCHES
   # set batches to 50 if no value is entered
   if [ "$BATCHES" = "" ]; then
      BATCHES=50
   fi

   echo "starting batch"
   "$InstallPath" -nogui -ni -p "$ScriptLoc"/ANN/f0_BT_test_10-12-15.proj epochs=2500 batches=$BATCHES

This is meant to be an interactive script to run an app. It is also intented to be more or less independent of where the app is installed on a given version of windows, and also where the script is located.

The script is in a directory with,
test.sh
ANN/

To call the app, I an using "$InstallPath" with quotes because there may be spaces in the path. The app takes an argument -p which is the path to the project file that you want to run, which is ./ANN/f0_BT_test_10-12-15.proj.
At first I tried,
"$InstallPath" -nogui -ni -p ./ANN/f0_BT_test_10-12-15.proj epochs=2500 batches=$BATCHES

and got,
$ ***ERROR: File: ./ANN/f0_BT_test_10-12-15.proj could not
be opened for reading

I thought that there may be an issue with where the shell is, and changed to,
"$InstallPath" -nogui -ni -p "$ScriptLoc"/ANN/f0_BT_test_10-12-15.proj epochs=2500 batches=$BATCHES

and got,
$ ***ERROR: File: /cygdrive/c/ANN_winTest_cyg/ANN/f0_BT_test_10-12-15.proj could not
be opened for reading

This is the correct path, so it could be a permissions issue. If I do ls -l,
-rwx------+ 1 basic_user None 1412567 2010-12-10 11:44 f0_BT_test_10-12-15.proj

it looks like I own the file, so now I am confused, my typical state I guess.

I can post my test files and directory if that would help.

LMHmedchem

I suspect app.exe is a windows application (or expects a windows path+file for it's -p argument.

In which case you will need to convert your path /cygdrive/c/ANN_winTest_cyg/ANN/f0_BT_test_10-12-15.proj to a windows path C:\ANN_winTest_cyg\ANN\f0_BT_test_10-12-15.proj eg:

Code:

WINPATH=$(cygpath -w "$ScriptLoc"/ANN/f0_BT_test_10-12-15.proj)
"$InstallPath" -nogui -ni -p  "$WINPATH" epochs=2500 batches=$BATCHES

What's the absolute path of f0_BT_test_10-12-15.proj?