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#1
05-16-2006
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Capturing a ret val of C obj file in ksh script
Hi,
I have one shell script which is calling a C executable. That C executable returns a value depending upon operations inside the C code. But how to get that value in the calling shell script? The syntax of calling the C executable is like -- C_exec <argc no> <argument1> <argument2> etc ... When I am doing return_value=C_exec <argc no> <argument1> <argument2> etc ... The runtime error is shown as -- <argc no>: not found Pls help. Bijitesh 
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#2
05-16-2006
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Quote:
Code:
/path/to/C_exec <argc no> <argument1> <argument2> return_value=$? Last edited by vino; 05-16-2006 at 04:13 AM.
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#4
05-16-2006
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The return status (what you want) is stored in the $? variable
Code:
/path/to/C_exec <argc no> <argument1> <argument2> retval=$? if [ $retval -eq 0 ] ; then echo "success" else echo "failure" fi
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#5
05-16-2006
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Thanks vino for ur reply. But that syntax is not working.
Instead grumpf's suggestion is working. Thanks grumpf and jim mcnamara. My problem is solved. But, just out of curiosity, I want to know the way of returning a character string or simply a character from C executable to calling shell script. Thanks in advance, Bijitesh
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#6
05-16-2006
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The exit code mechanism is working basicly since main() is int. What you see on shell is the return
code of main() (using void main() is therefore a BAD idea). A string is something different. The easy way retvar=$( myprg ) works only IFF there is no other output.
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