Control console app by shell script

[whiffee]

hi All,
I have a console app that I want to run from a shell script. Up to five variables and command to execute have to come from the shell script, without user intervention. Can this be done? Could someone show me a toy or point me to an example that I can look at? To demonstrate my level of ignorance, the following does not work:

=====================================
#! /bin/sh

./Appl start
input=/home/gary/hoseltopout.ply
output=/home/gary/testout.vtk
execute
quit
=====================================

(The above does presently work from the keyboard.)

thanks,
whiffee

(Mint 19, Lazarus 1.8.4)

[CCRDude]

If I understood you correctly:

Code: [Select]

#!/bin/sh
./Apple param1 param2 param3
And in Appl.lpr, just printing them as an example:

Code: Pascal  [Select][+][-]

1. WriteLn(ParamStr(1));
2. WriteLn(ParamStr(2));
3. WriteLn(ParamStr(3));

Make sure to use ParamCount to check if they're all specified.

[sash]

It seems like IDE menu "Project-> New project -> Console application" is what you're looking for.
It shows a convenient usage of HasOption, CheckOption, GetOptionValue etc.

[lucamar]

Try this:

File: Myscript.sh

Code: Bash  [Select][+][-]

1. #! /bin/sh
2.  
3. ./Appl start < theInput
4.  

File: theInput

Code: [Select]

input=/home/gary/hoseltopout.ply
output=/home/gary/testout.vtk
execute
quit
Bash (or shell) scripts are executed line by line: the shell will execute your app and wait for it to terminate before even looking at the next line.

[whiffee]

@ CCRDude,

Something is not working. My shell script:

Code: Pascal  [Select][+][-]

1. #! /bin/sh
2.  
3. ./testapp  first second third
4.  

My .lpr:

Code: Pascal  [Select][+][-]

1. { add your program here }
2.      WriteLn('this is the test app');
3.  
4.      WriteLn(ParamStr(1));
5.      WriteLn(ParamStr(2));
6.      WriteLn(ParamStr(3));
7.      WriteLn(InttoStr(ParamCount));  

Only the first WriteLn prints. My uses are: Classes, SysUtils, CustApp, FileUtil

@lucamar,
My revised shell script:

Code: Pascal  [Select][+][-]

1. #! /bin/sh
2.  
3. ./testapp start < first second third
4.  

The error msg (and only output):
./console3.sh: 3: ./console3.sh: cannot open first: No such file

[lucamar]

@lucamar,
My revised shell script:

Code: Pascal  [Select][+][-]

1. #! /bin/sh
2. ./testapp start < first second third
3.  

The error msg (and only output):
./console3.sh: 3: ./console3.sh: cannot open first: No such file

What that line does is to redirect the output of "first second third" (i.e. program "first") with parameters "second third") to the input of "testapp". You would have to use:

Code: Bash  [Select][+][-]

1. ./testapp start < echo first second third

i.e. redirect the output of echo

[whiffee]

Joy!!

Experimenting with lucamar's first post, I made a file called 'data':

Code: Pascal  [Select][+][-]

1. input=/home/gary/hoseltopout.ply
2. output=/home/gary/testout.vtk
3. execute
4. quit

then I revised the script:

Code: Pascal  [Select][+][-]

1. #! /bin/sh
2. ./Appl start < data

and then ran it. Success. Thanks for help.